def _CreateTestKey(self, key_path, time_string):
"""Creates Registry keys and values for testing.
Args:
key_path (str): Windows Registry key path.
time_string (str): key last written date and time.
Returns:
dfwinreg.WinRegistryKey: Windows Registry key.
"""
filetime = dfdatetime_filetime.Filetime()
filetime.CopyFromString(time_string)
registry_key = dfwinreg_fake.FakeWinRegistryKey(
'Network',
key_path=key_path,
last_written_time=filetime.timestamp,
offset=153)
# Setup H drive.
h_key = dfwinreg_fake.FakeWinRegistryKey(
'H', last_written_time=filetime.timestamp)
registry_key.AddSubkey(h_key)
value_data = b'\x00\x00\x00\x01'
registry_value = dfwinreg_fake.FakeWinRegistryValue(
'ConnectionType',
data=value_data,
data_type=dfwinreg_definitions.REG_DWORD_BIG_ENDIAN)
h_key.AddValue(registry_value)
value_data = b'\x00\x00\x00\x04'
registry_value = dfwinreg_fake.FakeWinRegistryValue(
'DeferFlags',
data=value_data,
data_type=dfwinreg_definitions.REG_DWORD_BIG_ENDIAN)
h_key.AddValue(registry_value)
value_data = b'\x00\x00\x00\x01'
registry_value = dfwinreg_fake.FakeWinRegistryValue(
'ProviderFlags',
data=value_data,
data_type=dfwinreg_definitions.REG_DWORD_BIG_ENDIAN)
h_key.AddValue(registry_value)
value_data = 'Microsoft Windows Network'.encode('utf_16_le')
registry_value = dfwinreg_fake.FakeWinRegistryValue(
'ProviderName',
data=value_data,
data_type=dfwinreg_definitions.REG_SZ)
h_key.AddValue(registry_value)
value_data = b'\x00\x02\x00\x00'
registry_value = dfwinreg_fake.FakeWinRegistryValue(
'ProviderType',
data=value_data,
data_type=dfwinreg_definitions.REG_DWORD_BIG_ENDIAN)
h_key.AddValue(registry_value)
value_data = '\\\\acme.local\\Shares\\User_Data\\John.Doe'.encode(
'utf_16_le')
registry_value = dfwinreg_fake.FakeWinRegistryValue(
'RemotePath',
data=value_data,
data_type=dfwinreg_definitions.REG_SZ)
h_key.AddValue(registry_value)
value_data = b'\x00\x00\x00\x00'
registry_value = dfwinreg_fake.FakeWinRegistryValue(
'UserName',
data=value_data,
data_type=dfwinreg_definitions.REG_DWORD_BIG_ENDIAN)
h_key.AddValue(registry_value)
# Setup Z drive.
z_key = dfwinreg_fake.FakeWinRegistryKey(
'Z', last_written_time=filetime.timestamp)
registry_key.AddSubkey(z_key)
value_data = b'\x00\x00\x00\x01'
registry_value = dfwinreg_fake.FakeWinRegistryValue(
'ConnectionType',
data=value_data,
data_type=dfwinreg_definitions.REG_DWORD_BIG_ENDIAN)
z_key.AddValue(registry_value)
value_data = b'\x00\x00\x00\x04'
registry_value = dfwinreg_fake.FakeWinRegistryValue(
'DeferFlags',
data=value_data,
data_type=dfwinreg_definitions.REG_DWORD_BIG_ENDIAN)
z_key.AddValue(registry_value)
value_data = b'\x00\x00\x00\x01'
registry_value = dfwinreg_fake.FakeWinRegistryValue(
'ProviderFlags',
data=value_data,
data_type=dfwinreg_definitions.REG_DWORD_BIG_ENDIAN)
z_key.AddValue(registry_value)
value_data = 'Microsoft Windows Network'.encode('utf_16_le')
registry_value = dfwinreg_fake.FakeWinRegistryValue(
'ProviderName',
data=value_data,
data_type=dfwinreg_definitions.REG_SZ)
z_key.AddValue(registry_value)
value_data = b'\x00\x02\x00\x00'
registry_value = dfwinreg_fake.FakeWinRegistryValue(
'ProviderType',
data=value_data,
data_type=dfwinreg_definitions.REG_DWORD_BIG_ENDIAN)
z_key.AddValue(registry_value)
value_data = '\\\\secret_computer\\Media'.encode('utf_16_le')
registry_value = dfwinreg_fake.FakeWinRegistryValue(
'RemotePath',
data=value_data,
data_type=dfwinreg_definitions.REG_SZ)
z_key.AddValue(registry_value)
value_data = b'\x00\x00\x00\x00'
registry_value = dfwinreg_fake.FakeWinRegistryValue(
'UserName',
data=value_data,
data_type=dfwinreg_definitions.REG_DWORD_BIG_ENDIAN)
z_key.AddValue(registry_value)
return registry_key
def _CreateTestEvents(self):
"""Creates events for testing.
Returns:
list[EventObject]: events.
"""
test_events = []
filetime = dfdatetime_filetime.Filetime()
event_data = windows_events.WindowsRegistryEventData()
event_data.key_path = 'MY AutoRun key'
event_data.parser = 'UNKNOWN'
event_data.regvalue = {'Value': 'c:/Temp/evil.exe'}
filetime.CopyFromDateTimeString('2012-04-20 22:38:46.929596')
event = time_events.DateTimeValuesEvent(
filetime, definitions.TIME_DESCRIPTION_WRITTEN)
self._MergeEventAndEventData(event, event_data)
test_events.append(event)
event_data = windows_events.WindowsRegistryEventData()
event_data.key_path = (
'HKEY_CURRENT_USER\\Secret\\EvilEmpire\\Malicious_key')
event_data.parser = 'UNKNOWN'
event_data.regvalue = {'Value': 'send all the exes to the other world'}
filetime.CopyFromDateTimeString('2012-04-20 23:56:46.929596')
event = time_events.DateTimeValuesEvent(
filetime, definitions.TIME_DESCRIPTION_WRITTEN)
self._MergeEventAndEventData(event, event_data)
test_events.append(event)
event_data = windows_events.WindowsRegistryEventData()
event_data.key_path = 'HKEY_CURRENT_USER\\Windows\\Normal'
event_data.parser = 'UNKNOWN'
event_data.regvalue = {'Value': 'run all the benign stuff'}
filetime.CopyFromDateTimeString('2012-04-20 16:44:46')
event = time_events.DateTimeValuesEvent(
filetime, definitions.TIME_DESCRIPTION_WRITTEN)
self._MergeEventAndEventData(event, event_data)
test_events.append(event)
timestamp = timelib.Timestamp.CopyFromString('2009-04-05 12:27:39')
# TODO: refactor to use event data.
event = time_events.TimestampEvent(
timestamp,
definitions.TIME_DESCRIPTION_WRITTEN,
data_type='text:entry')
event.hostname = 'nomachine'
event.offset = 12
event.parser = 'UNKNOWN'
event.text = (
'This is a line by someone not reading the log line properly. And '
'since this log line exceeds the accepted 80 chars it will be '
'shortened.')
event.username = '******'
test_events.append(event)
return test_events
def ParseFileObject(self, parser_mediator, file_object, **kwargs):
"""Parses a Windows Prefetch file-like object.
Args:
parser_mediator (ParserMediator): mediates interactions between parsers
and other components, such as storage and dfvfs.
file_object (dfvfs.FileIO): file-like object.
"""
scca_file = pyscca.file()
try:
scca_file.open_file_object(file_object)
except IOError as exception:
parser_mediator.ProduceExtractionError(
u'unable to open file with error: {0:s}'.format(exception))
return
format_version = scca_file.format_version
executable_filename = scca_file.executable_filename
prefetch_hash = scca_file.prefetch_hash
run_count = scca_file.run_count
number_of_volumes = scca_file.number_of_volumes
volume_serial_numbers = []
volume_device_paths = []
path = u''
for volume_information in iter(scca_file.volumes):
volume_serial_number = volume_information.serial_number
volume_device_path = volume_information.device_path
volume_serial_numbers.append(volume_serial_number)
volume_device_paths.append(volume_device_path)
timestamp = volume_information.get_creation_time_as_integer()
if timestamp:
event_data = windows_events.WindowsVolumeEventData()
event_data.device_path = volume_device_path
event_data.origin = parser_mediator.GetFilename()
event_data.serial_number = volume_serial_number
date_time = dfdatetime_filetime.Filetime(timestamp=timestamp)
event = time_events.DateTimeValuesEvent(
date_time, definitions.TIME_DESCRIPTION_CREATION)
parser_mediator.ProduceEventWithEventData(event, event_data)
for filename in iter(scca_file.filenames):
if not filename:
continue
if (filename.startswith(volume_device_path)
and filename.endswith(executable_filename)):
_, _, path = filename.partition(volume_device_path)
mapped_files = []
for entry_index, file_metrics in enumerate(
scca_file.file_metrics_entries):
mapped_file_string = file_metrics.filename
if not mapped_file_string:
parser_mediator.ProduceExtractionError(
u'missing filename for file metrics entry: {0:d}'.format(
entry_index))
continue
file_reference = file_metrics.file_reference
if file_reference:
mapped_file_string = (
u'{0:s} [MFT entry: {1:d}, sequence: {2:d}]').format(
mapped_file_string, file_reference & 0xffffffffffff,
file_reference >> 48)
mapped_files.append(mapped_file_string)
event_data = WinPrefetchExecutionEventData()
event_data.executable = executable_filename
event_data.mapped_files = mapped_files
event_data.number_of_volumes = number_of_volumes
event_data.path = path
event_data.prefetch_hash = prefetch_hash
event_data.run_count = run_count
event_data.version = format_version
event_data.volume_device_paths = volume_device_paths
event_data.volume_serial_numbers = volume_serial_numbers
timestamp = scca_file.get_last_run_time_as_integer(0)
if not timestamp:
parser_mediator.ProduceExtractionError(u'missing last run time')
date_time = dfdatetime_semantic_time.SemanticTime(u'Not set')
else:
date_time = dfdatetime_filetime.Filetime(timestamp=timestamp)
event = time_events.DateTimeValuesEvent(
date_time, definitions.TIME_DESCRIPTION_LAST_RUN)
parser_mediator.ProduceEventWithEventData(event, event_data)
# Check for the 7 older last run time values available since
# format version 26.
if format_version >= 26:
for last_run_time_index in range(1, 8):
timestamp = scca_file.get_last_run_time_as_integer(
last_run_time_index)
if not timestamp:
continue
date_time = dfdatetime_filetime.Filetime(timestamp=timestamp)
date_time_description = u'Previous {0:s}'.format(
definitions.TIME_DESCRIPTION_LAST_RUN)
event = time_events.DateTimeValuesEvent(
date_time, date_time_description)
parser_mediator.ProduceEventWithEventData(event, event_data)
scca_file.close()
def ParseDestList(self, parser_mediator, olecf_item):
"""Parses the DestList OLECF item.
Args:
parser_mediator (ParserMediator): mediates interactions between parsers
and other components, such as storage and dfvfs.
olecf_item (pyolecf.item): OLECF item.
Raises:
UnableToParseFile: if the DestList cannot be parsed.
"""
header_map = self._GetDataTypeMap('dest_list_header')
try:
header, entry_offset = self._ReadStructureFromFileObject(
olecf_item, 0, header_map)
except (ValueError, errors.ParseError) as exception:
raise errors.UnableToParseFile(
'Unable to parse DestList header with error: {0!s}'.format(
exception))
if header.format_version == 1:
entry_map = self._GetDataTypeMap('dest_list_entry_v1')
elif header.format_version in (3, 4):
entry_map = self._GetDataTypeMap('dest_list_entry_v3')
else:
parser_mediator.ProduceExtractionWarning(
'unsupported format version: {0:d}.'.format(
header.format_version))
return
while entry_offset < olecf_item.size:
try:
entry, entry_data_size = self._ReadStructureFromFileObject(
olecf_item, entry_offset, entry_map)
except (ValueError, errors.ParseError) as exception:
raise errors.UnableToParseFile(
'Unable to parse DestList entry with error: {0!s}'.format(
exception))
display_name = 'DestList entry at offset: 0x{0:08x}'.format(
entry_offset)
try:
droid_volume_identifier = self._ParseDistributedTrackingIdentifier(
parser_mediator, entry.droid_volume_identifier,
display_name)
except (TypeError, ValueError) as exception:
droid_volume_identifier = ''
parser_mediator.ProduceExtractionWarning(
'unable to read droid volume identifier with error: {0!s}'.
format(exception))
try:
droid_file_identifier = self._ParseDistributedTrackingIdentifier(
parser_mediator, entry.droid_file_identifier, display_name)
except (TypeError, ValueError) as exception:
droid_file_identifier = ''
parser_mediator.ProduceExtractionWarning(
'unable to read droid file identifier with error: {0!s}'.
format(exception))
try:
birth_droid_volume_identifier = (
self._ParseDistributedTrackingIdentifier(
parser_mediator, entry.birth_droid_volume_identifier,
display_name))
except (TypeError, ValueError) as exception:
birth_droid_volume_identifier = ''
parser_mediator.ProduceExtractionWarning((
'unable to read birth droid volume identifier with error: '
'{0:s}').format(exception))
try:
birth_droid_file_identifier = self._ParseDistributedTrackingIdentifier(
parser_mediator, entry.birth_droid_file_identifier,
display_name)
except (TypeError, ValueError) as exception:
birth_droid_file_identifier = ''
parser_mediator.ProduceExtractionWarning(
('unable to read birth droid file identifier with error: '
'{0:s}').format(exception))
if entry.last_modification_time == 0:
date_time = dfdatetime_semantic_time.NotSet()
else:
date_time = dfdatetime_filetime.Filetime(
timestamp=entry.last_modification_time)
event_data = AutomaticDestinationsDestListEntryEventData()
event_data.birth_droid_file_identifier = birth_droid_file_identifier
event_data.birth_droid_volume_identifier = birth_droid_volume_identifier
event_data.droid_file_identifier = droid_file_identifier
event_data.droid_volume_identifier = droid_volume_identifier
event_data.entry_number = entry.entry_number
event_data.hostname = entry.hostname.rstrip('\x00')
event_data.offset = entry_offset
event_data.path = entry.path.rstrip('\x00')
event_data.pin_status = entry.pin_status
event = time_events.DateTimeValuesEvent(
date_time, definitions.TIME_DESCRIPTION_MODIFICATION)
parser_mediator.ProduceEventWithEventData(event, event_data)
entry_offset += entry_data_size
def _CreateTestKey(self, key_path, time_string):
"""Creates Registry keys and values for testing.
Args:
key_path (str): Windows Registry key path.
time_string (str): key last written date and time.
Returns:
dfwinreg.WinRegistryKey: a Windows Registry key.
"""
filetime = dfdatetime_filetime.Filetime()
filetime.CopyFromDateTimeString(time_string)
registry_key = dfwinreg_fake.FakeWinRegistryKey(
'Winlogon',
key_path=key_path,
last_written_time=filetime.timestamp,
offset=153)
# Setup Winlogon values.
value_data = '1'.encode('utf_16_le')
registry_value = dfwinreg_fake.FakeWinRegistryValue(
'AutoAdminLogon',
data=value_data,
data_type=dfwinreg_definitions.REG_SZ)
registry_key.AddValue(registry_value)
value_data = b'\x00\x00\x00\x01'
registry_value = dfwinreg_fake.FakeWinRegistryValue(
'AutoRestartShell',
data=value_data,
data_type=dfwinreg_definitions.REG_DWORD_BIG_ENDIAN)
registry_key.AddValue(registry_value)
value_data = '0 0 0'.encode('utf_16_le')
registry_value = dfwinreg_fake.FakeWinRegistryValue(
'Background',
data=value_data,
data_type=dfwinreg_definitions.REG_SZ)
registry_key.AddValue(registry_value)
value_data = '10'.encode('utf_16_le')
registry_value = dfwinreg_fake.FakeWinRegistryValue(
'CachedLogonsCount',
data=value_data,
data_type=dfwinreg_definitions.REG_SZ)
registry_key.AddValue(registry_value)
value_data = 'no'.encode('utf_16_le')
registry_value = dfwinreg_fake.FakeWinRegistryValue(
'DebugServerCommand',
data=value_data,
data_type=dfwinreg_definitions.REG_SZ)
registry_key.AddValue(registry_value)
value_data = ''.encode('utf_16_le')
registry_value = dfwinreg_fake.FakeWinRegistryValue(
'DefaultDomainName',
data=value_data,
data_type=dfwinreg_definitions.REG_SZ)
registry_key.AddValue(registry_value)
value_data = 'user'.encode('utf_16_le')
registry_value = dfwinreg_fake.FakeWinRegistryValue(
'DefaultUserName',
data=value_data,
data_type=dfwinreg_definitions.REG_SZ)
registry_key.AddValue(registry_value)
value_data = b'\x00\x00\x00\x01'
registry_value = dfwinreg_fake.FakeWinRegistryValue(
'DisableCAD',
data=value_data,
data_type=dfwinreg_definitions.REG_DWORD_BIG_ENDIAN)
registry_key.AddValue(registry_value)
value_data = b'\x00\x00\x00\x00'
registry_value = dfwinreg_fake.FakeWinRegistryValue(
'ForceUnlockLogon',
data=value_data,
data_type=dfwinreg_definitions.REG_DWORD_BIG_ENDIAN)
registry_key.AddValue(registry_value)
value_data = ''.encode('utf_16_le')
registry_value = dfwinreg_fake.FakeWinRegistryValue(
'LegalNoticeCaption',
data=value_data,
data_type=dfwinreg_definitions.REG_SZ)
registry_key.AddValue(registry_value)
value_data = ''.encode('utf_16_le')
registry_value = dfwinreg_fake.FakeWinRegistryValue(
'LegalNoticeText',
data=value_data,
data_type=dfwinreg_definitions.REG_SZ)
registry_key.AddValue(registry_value)
value_data = b'\x00\x00\x00\x05'
registry_value = dfwinreg_fake.FakeWinRegistryValue(
'PasswordExpiryWarning',
data=value_data,
data_type=dfwinreg_definitions.REG_DWORD_BIG_ENDIAN)
registry_key.AddValue(registry_value)
value_data = '0'.encode('utf_16_le')
registry_value = dfwinreg_fake.FakeWinRegistryValue(
'PowerdownAfterShutdown',
data=value_data,
data_type=dfwinreg_definitions.REG_SZ)
registry_key.AddValue(registry_value)
value_data = '{A520A1A4-1780-4FF6-BD18-167343C5AF16}'.encode(
'utf_16_le')
registry_value = dfwinreg_fake.FakeWinRegistryValue(
'PreCreateKnownFolders',
data=value_data,
data_type=dfwinreg_definitions.REG_SZ)
registry_key.AddValue(registry_value)
value_data = '1'.encode('utf_16_le')
registry_value = dfwinreg_fake.FakeWinRegistryValue(
'ReportBootOk',
data=value_data,
data_type=dfwinreg_definitions.REG_SZ)
registry_key.AddValue(registry_value)
value_data = 'explorer.exe'.encode('utf_16_le')
registry_value = dfwinreg_fake.FakeWinRegistryValue(
'Shell', data=value_data, data_type=dfwinreg_definitions.REG_SZ)
registry_key.AddValue(registry_value)
value_data = b'\x00\x00\x00\x2b'
registry_value = dfwinreg_fake.FakeWinRegistryValue(
'ShutdownFlags',
data=value_data,
data_type=dfwinreg_definitions.REG_DWORD_BIG_ENDIAN)
registry_key.AddValue(registry_value)
value_data = '0'.encode('utf_16_le')
registry_value = dfwinreg_fake.FakeWinRegistryValue(
'ShutdownWithoutLogon',
data=value_data,
data_type=dfwinreg_definitions.REG_SZ)
registry_key.AddValue(registry_value)
value_data = 'C:\\Windows\\system32\\userinit.exe'.encode('utf_16_le')
registry_value = dfwinreg_fake.FakeWinRegistryValue(
'Userinit', data=value_data, data_type=dfwinreg_definitions.REG_SZ)
registry_key.AddValue(registry_value)
value_data = 'SystemPropertiesPerformance.exe/pagefile'.encode(
'utf_16_le')
registry_value = dfwinreg_fake.FakeWinRegistryValue(
'VMApplet', data=value_data, data_type=dfwinreg_definitions.REG_SZ)
registry_key.AddValue(registry_value)
value_data = '0'.encode('utf_16_le')
registry_value = dfwinreg_fake.FakeWinRegistryValue(
'WinStationsDisabled',
data=value_data,
data_type=dfwinreg_definitions.REG_SZ)
registry_key.AddValue(registry_value)
# Setup registered event handlers.
notify_key_name = 'Notify'
notify_key = dfwinreg_fake.FakeWinRegistryKey(notify_key_name)
registry_key.AddSubkey(notify_key_name, notify_key)
navlogon_key_name = 'NavLogon'
navlogon_key = dfwinreg_fake.FakeWinRegistryKey(
navlogon_key_name, last_written_time=filetime.timestamp)
notify_key.AddSubkey(navlogon_key_name, navlogon_key)
value_data = 'NavLogon.dll'.encode('utf_16_le')
registry_value = dfwinreg_fake.FakeWinRegistryValue(
'DllName', data=value_data, data_type=dfwinreg_definitions.REG_SZ)
navlogon_key.AddValue(registry_value)
value_data = 'NavLogoffEvent'.encode('utf_16_le')
registry_value = dfwinreg_fake.FakeWinRegistryValue(
'Logoff', data=value_data, data_type=dfwinreg_definitions.REG_SZ)
navlogon_key.AddValue(registry_value)
value_data = 'NavStartShellEvent'.encode('utf_16_le')
registry_value = dfwinreg_fake.FakeWinRegistryValue(
'StartShell',
data=value_data,
data_type=dfwinreg_definitions.REG_SZ)
navlogon_key.AddValue(registry_value)
secret_malware_key_name = 'SecretMalware'
secret_malware_key = dfwinreg_fake.FakeWinRegistryKey(
secret_malware_key_name, last_written_time=filetime.timestamp)
notify_key.AddSubkey(secret_malware_key_name, secret_malware_key)
value_data = b'\x00\x00\x00\x00'
registry_value = dfwinreg_fake.FakeWinRegistryValue(
'Asynchronous',
data=value_data,
data_type=dfwinreg_definitions.REG_DWORD_BIG_ENDIAN)
secret_malware_key.AddValue(registry_value)
value_data = 'secret_malware.dll'.encode('utf_16_le')
registry_value = dfwinreg_fake.FakeWinRegistryValue(
'DllName', data=value_data, data_type=dfwinreg_definitions.REG_SZ)
secret_malware_key.AddValue(registry_value)
value_data = b'\x00\x00\x00\x00'
registry_value = dfwinreg_fake.FakeWinRegistryValue(
'Impersonate',
data=value_data,
data_type=dfwinreg_definitions.REG_DWORD_BIG_ENDIAN)
secret_malware_key.AddValue(registry_value)
value_data = 'secretEventLock'.encode('utf_16_le')
registry_value = dfwinreg_fake.FakeWinRegistryValue(
'Lock', data=value_data, data_type=dfwinreg_definitions.REG_SZ)
secret_malware_key.AddValue(registry_value)
value_data = 'secretEventLogoff'.encode('utf_16_le')
registry_value = dfwinreg_fake.FakeWinRegistryValue(
'Logoff', data=value_data, data_type=dfwinreg_definitions.REG_SZ)
secret_malware_key.AddValue(registry_value)
value_data = 'secretEventLogon'.encode('utf_16_le')
registry_value = dfwinreg_fake.FakeWinRegistryValue(
'Logon', data=value_data, data_type=dfwinreg_definitions.REG_SZ)
secret_malware_key.AddValue(registry_value)
value_data = 'secretEventShutdown'.encode('utf_16_le')
registry_value = dfwinreg_fake.FakeWinRegistryValue(
'Shutdown', data=value_data, data_type=dfwinreg_definitions.REG_SZ)
secret_malware_key.AddValue(registry_value)
value_data = 'secretEventSmartCardLogonNotify'.encode('utf_16_le')
registry_value = dfwinreg_fake.FakeWinRegistryValue(
'SmartCardLogonNotify',
data=value_data,
data_type=dfwinreg_definitions.REG_SZ)
secret_malware_key.AddValue(registry_value)
value_data = 'secretEventStartShell'.encode('utf_16_le')
registry_value = dfwinreg_fake.FakeWinRegistryValue(
'StartShell',
data=value_data,
data_type=dfwinreg_definitions.REG_SZ)
secret_malware_key.AddValue(registry_value)
value_data = 'secretEventStartup'.encode('utf_16_le')
registry_value = dfwinreg_fake.FakeWinRegistryValue(
'Startup', data=value_data, data_type=dfwinreg_definitions.REG_SZ)
secret_malware_key.AddValue(registry_value)
value_data = 'secretEventStopScreenSaver'.encode('utf_16_le')
registry_value = dfwinreg_fake.FakeWinRegistryValue(
'StopScreenSaver',
data=value_data,
data_type=dfwinreg_definitions.REG_SZ)
secret_malware_key.AddValue(registry_value)
value_data = 'secretEventUnlock'.encode('utf_16_le')
registry_value = dfwinreg_fake.FakeWinRegistryValue(
'Unlock', data=value_data, data_type=dfwinreg_definitions.REG_SZ)
secret_malware_key.AddValue(registry_value)
return registry_key
def access_time(self): """dfdatetime.Filetime: access time or None if not set.""" timestamp = self._fsntfs_attribute.get_access_time_as_integer() return dfdatetime_filetime.Filetime(timestamp=timestamp)
def entry_modification_time(self): """dfdatetime.Filetime: entry modification time or None if not set.""" timestamp = self._fsntfs_attribute.get_entry_modification_time_as_integer() return dfdatetime_filetime.Filetime(timestamp=timestamp)
def _ParseFileReferenceKey(self, parser_mediator, file_reference_key):
"""Parses a file reference key (sub key of Root\\File\\%VOLUME%) for events.
Args:
parser_mediator (ParserMediator): mediates interactions between parsers
and other components, such as storage and dfvfs.
file_reference_key (pyregf.key): file reference key.
"""
event_data = AMCacheFileEventData()
try:
if '0000' in file_reference_key.name:
# A NTFS file is a combination of MFT entry and sequence number.
sequence_number, mft_entry = file_reference_key.name.split(
'0000')
mft_entry = int(mft_entry, 16)
sequence_number = int(sequence_number, 16)
event_data.file_reference = '{0:d}-{1:d}'.format(
mft_entry, sequence_number)
else:
# A FAT file is a single number.
file_reference = int(file_reference_key.name, 16)
event_data.file_reference = '{0:d}'.format(file_reference)
except (ValueError, TypeError):
pass
for value_name, attribute_name in self._FILE_REFERENCE_KEY_VALUES.items(
):
value = file_reference_key.get_value_by_name(value_name)
if not value:
continue
value_data = self._GetValueDataAsObject(parser_mediator, value)
if attribute_name == 'sha1' and value_data.startswith('0000'):
# Strip off the 4 leading zero's from the sha1 hash.
value_data = value_data[4:]
setattr(event_data, attribute_name, value_data)
amcache_time_value = file_reference_key.get_value_by_name(
self._AMCACHE_ENTRY_WRITE_TIME)
if amcache_time_value:
amcache_time = filetime.Filetime(
amcache_time_value.get_data_as_integer())
event = time_events.DateTimeValuesEvent(
amcache_time, definitions.TIME_DESCRIPTION_MODIFICATION)
parser_mediator.ProduceEventWithEventData(event, event_data)
creation_time_value = file_reference_key.get_value_by_name(
self._AMCACHE_FILE_CREATION_TIME)
if creation_time_value:
creation_time = filetime.Filetime(
creation_time_value.get_data_as_integer())
event = time_events.DateTimeValuesEvent(
creation_time, definitions.TIME_DESCRIPTION_CREATION)
parser_mediator.ProduceEventWithEventData(event, event_data)
modification_time_value = file_reference_key.get_value_by_name(
self._AMCACHE_FILE_MODIFICATION_TIME)
if modification_time_value:
modification_time = filetime.Filetime(
modification_time_value.get_data_as_integer())
event = time_events.DateTimeValuesEvent(
modification_time, definitions.TIME_DESCRIPTION_MODIFICATION)
parser_mediator.ProduceEventWithEventData(event, event_data)
compilation_time_value = file_reference_key.get_value_by_name(
self._AMCACHE_COMPILATION_TIME)
if compilation_time_value:
link_time = posix_time.PosixTime(
compilation_time_value.get_data_as_integer())
event = time_events.DateTimeValuesEvent(
link_time, definitions.TIME_DESCRIPTION_CHANGE)
parser_mediator.ProduceEventWithEventData(event, event_data)
def ExtractEvents(self, parser_mediator, registry_key, **kwargs):
"""Extracts events from a Windows Registry key.
Args:
parser_mediator (ParserMediator): mediates interactions between parsers
and other components, such as storage and dfvfs.
registry_key (dfwinreg.WinRegistryKey): Windows Registry key.
"""
# TODO: Test other Office versions to make sure this plugin is applicable.
entries = []
for registry_value in registry_key.GetValues():
# Ignore any value not in the form: 'Item [0-9]+'.
if not registry_value.name or not self._RE_VALUE_NAME.search(
registry_value.name):
continue
# Ignore any value that is empty or that does not contain a string.
if not registry_value.data or not registry_value.DataIsString():
continue
value_string = registry_value.GetDataAsObject()
values = self._RE_VALUE_DATA.findall(value_string)
# Values will contain a list containing a tuple containing 2 values.
if len(values) != 1 or len(values[0]) != 2:
continue
try:
timestamp = int(values[0][0], 16)
except ValueError:
parser_mediator.ProduceExtractionWarning(
('unable to convert filetime string to an integer for '
'value: {0:s}.').format(registry_value.name))
continue
event_data = OfficeMRUWindowsRegistryEventData()
event_data.key_path = (registry_key.path).replace("\\", "/")
# TODO: split value string in individual values.
event_data.value_string = value_string
entries.append('{0:s}: {1:s}'.format(registry_value.name,
value_string))
if not timestamp:
date_time = dfdatetime_semantic_time.SemanticTime('Not set')
else:
date_time = dfdatetime_filetime.Filetime(timestamp=timestamp)
# TODO: determine if this should be last written time.
event = time_events.DateTimeValuesEvent(
date_time, definitions.TIME_DESCRIPTION_WRITTEN)
parser_mediator.ProduceEventWithEventData(event, event_data)
event_data = OfficeMRUListWindowsRegistryEventData()
event_data.entries = ' '.join([value for value in entries]) or None
event_data.key_path = (registry_key.path).replace("\\", "/")
event = time_events.DateTimeValuesEvent(
registry_key.last_written_time,
definitions.TIME_DESCRIPTION_WRITTEN)
parser_mediator.ProduceEventWithEventData(event, event_data)
def _CreateTestKey(self, key_path, time_string):
"""Creates Registry keys and values for testing.
Args:
key_path (str): Windows Registry key path.
time_string (str): key last written date and time.
Returns:
dfwinreg.WinRegistryKey: a Windows Registry key.
"""
filetime = dfdatetime_filetime.Filetime()
filetime.CopyFromString(time_string)
registry_key = dfwinreg_fake.FakeWinRegistryKey(
u'NetworkList',
key_path=key_path,
last_written_time=filetime.timestamp,
offset=153)
# Setup Profiles.
profiles = dfwinreg_fake.FakeWinRegistryKey(u'Profiles')
registry_key.AddSubkey(profiles)
profile_1 = dfwinreg_fake.FakeWinRegistryKey(
u'{B358E985-4464-4ABD-AF99-7D4A0AF66BB7}')
profiles.AddSubkey(profile_1)
value_data = b'\x00\x00\x00\x00'
registry_value = dfwinreg_fake.FakeWinRegistryValue(
u'Category',
data=value_data,
data_type=dfwinreg_definitions.REG_DWORD_BIG_ENDIAN)
profile_1.AddValue(registry_value)
value_data = (
b'\xde\x07\x0c\x00\x02\x00\x10\x00\x08\x00\x04\x00\x27\x00\x6a\x00'
)
registry_value = dfwinreg_fake.FakeWinRegistryValue(
u'DateCreated',
data=value_data,
data_type=dfwinreg_definitions.REG_BINARY)
profile_1.AddValue(registry_value)
value_data = (
b'\xdf\x07\x01\x00\x02\x00\x1b\x00\x0f\x00\x0f\x00\x1b\x00\xc5\x03'
)
registry_value = dfwinreg_fake.FakeWinRegistryValue(
u'DateLastConnected',
data=value_data,
data_type=dfwinreg_definitions.REG_BINARY)
profile_1.AddValue(registry_value)
value_data = u'My Awesome Wifi Hotspot'.encode(u'utf_16_le')
registry_value = dfwinreg_fake.FakeWinRegistryValue(
u'Description',
data=value_data,
data_type=dfwinreg_definitions.REG_SZ)
profile_1.AddValue(registry_value)
value_data = b'\x00\x00\x00\x00'
registry_value = dfwinreg_fake.FakeWinRegistryValue(
u'Managed',
data=value_data,
data_type=dfwinreg_definitions.REG_DWORD_BIG_ENDIAN)
profile_1.AddValue(registry_value)
value_data = b'\x00\x00\x00\x47'
registry_value = dfwinreg_fake.FakeWinRegistryValue(
u'NameType',
data=value_data,
data_type=dfwinreg_definitions.REG_DWORD_BIG_ENDIAN)
profile_1.AddValue(registry_value)
value_data = u'My Awesome Wifi Hotspot'.encode(u'utf_16_le')
registry_value = dfwinreg_fake.FakeWinRegistryValue(
u'ProfileName',
data=value_data,
data_type=dfwinreg_definitions.REG_SZ)
profile_1.AddValue(registry_value)
profile_2 = dfwinreg_fake.FakeWinRegistryKey(
u'{C1C57B58-BFE2-428B-818C-9D69A873AD3D}')
profiles.AddSubkey(profile_2)
value_data = b'\x00\x00\x00\x00'
registry_value = dfwinreg_fake.FakeWinRegistryValue(
u'Category',
data=value_data,
data_type=dfwinreg_definitions.REG_DWORD_BIG_ENDIAN)
profile_2.AddValue(registry_value)
value_data = (
b'\xde\x07\x05\x00\x02\x00\x06\x00\x11\x00\x02\x00\x13\x00\x1b\x03'
)
registry_value = dfwinreg_fake.FakeWinRegistryValue(
u'DateCreated',
data=value_data,
data_type=dfwinreg_definitions.REG_BINARY)
profile_2.AddValue(registry_value)
value_data = (
b'\xde\x07\x05\x00\x02\x00\x06\x00\x11\x00\x07\x00\x36\x00\x0a\x00'
)
registry_value = dfwinreg_fake.FakeWinRegistryValue(
u'DateLastConnected',
data=value_data,
data_type=dfwinreg_definitions.REG_BINARY)
profile_2.AddValue(registry_value)
value_data = u'Network'.encode(u'utf_16_le')
registry_value = dfwinreg_fake.FakeWinRegistryValue(
u'Description',
data=value_data,
data_type=dfwinreg_definitions.REG_SZ)
profile_2.AddValue(registry_value)
value_data = b'\x00\x00\x00\x00'
registry_value = dfwinreg_fake.FakeWinRegistryValue(
u'Managed',
data=value_data,
data_type=dfwinreg_definitions.REG_DWORD_BIG_ENDIAN)
profile_2.AddValue(registry_value)
value_data = b'\x00\x00\x00\x06'
registry_value = dfwinreg_fake.FakeWinRegistryValue(
u'NameType',
data=value_data,
data_type=dfwinreg_definitions.REG_DWORD_BIG_ENDIAN)
profile_2.AddValue(registry_value)
value_data = u'Network'.encode(u'utf_16_le')
registry_value = dfwinreg_fake.FakeWinRegistryValue(
u'ProfileName',
data=value_data,
data_type=dfwinreg_definitions.REG_SZ)
profile_2.AddValue(registry_value)
# Setup signatures.
signatures = dfwinreg_fake.FakeWinRegistryKey(u'Signatures')
registry_key.AddSubkey(signatures)
managed = dfwinreg_fake.FakeWinRegistryKey(u'Managed')
signatures.AddSubkey(managed)
unmanaged = dfwinreg_fake.FakeWinRegistryKey(u'Unmanaged')
signatures.AddSubkey(unmanaged)
unmanaged_subkey = dfwinreg_fake.FakeWinRegistryKey(
u'010103000F0000F0080000000F0000F0E8982FB31F37E52AF30A6575A4898CE667'
u'6E8C2F99C4C5131D84F64BD823E0')
unmanaged.AddSubkey(unmanaged_subkey)
value_data = b'\x00\x50\x56\xea\x6c\xec'
registry_value = dfwinreg_fake.FakeWinRegistryValue(
u'DefaultGatewayMac',
data=value_data,
data_type=dfwinreg_definitions.REG_BINARY)
unmanaged_subkey.AddValue(registry_value)
value_data = u'Network'.encode(u'utf_16_le')
registry_value = dfwinreg_fake.FakeWinRegistryValue(
u'Description',
data=value_data,
data_type=dfwinreg_definitions.REG_SZ)
unmanaged_subkey.AddValue(registry_value)
value_data = u'localdomain'.encode(u'utf_16_le')
registry_value = dfwinreg_fake.FakeWinRegistryValue(
u'DnsSuffix',
data=value_data,
data_type=dfwinreg_definitions.REG_SZ)
unmanaged_subkey.AddValue(registry_value)
value_data = u'Network'.encode(u'utf_16_le')
registry_value = dfwinreg_fake.FakeWinRegistryValue(
u'FirstNetwork',
data=value_data,
data_type=dfwinreg_definitions.REG_SZ)
unmanaged_subkey.AddValue(registry_value)
value_data = u'{C1C57B58-BFE2-428B-818C-9D69A873AD3D}'.encode(
u'utf_16_le')
registry_value = dfwinreg_fake.FakeWinRegistryValue(
u'ProfileGuid',
data=value_data,
data_type=dfwinreg_definitions.REG_SZ)
unmanaged_subkey.AddValue(registry_value)
value_data = b'\x00\x00\x00\x08'
registry_value = dfwinreg_fake.FakeWinRegistryValue(
u'Source',
data=value_data,
data_type=dfwinreg_definitions.REG_DWORD_BIG_ENDIAN)
unmanaged_subkey.AddValue(registry_value)
return registry_key
def ParseFileObject(self,
parser_mediator,
file_object,
display_name=None,
**kwargs):
"""Parses a Windows Shortcut (LNK) file-like object.
Args:
parser_mediator (ParserMediator): mediates interactions between parsers
and other components, such as storage and dfvfs.
file_object (dfvfs.FileIO): file-like object.
display_name (Optional[str]): display name.
"""
if not display_name:
display_name = parser_mediator.GetDisplayName()
lnk_file = pylnk.file()
lnk_file.set_ascii_codepage(parser_mediator.codepage)
try:
lnk_file.open_file_object(file_object)
except IOError as exception:
parser_mediator.ProduceExtractionError(
'unable to open file with error: {0:s}'.format(exception))
return
link_target = None
if lnk_file.link_target_identifier_data:
# TODO: change file_entry.name to display name once it is generated
# correctly.
display_name = parser_mediator.GetFilename()
shell_items_parser = shell_items.ShellItemsParser(display_name)
shell_items_parser.ParseByteStream(
parser_mediator,
lnk_file.link_target_identifier_data,
codepage=parser_mediator.codepage)
link_target = shell_items_parser.CopyToPath()
access_time = lnk_file.get_file_access_time_as_integer()
if access_time != 0:
date_time = dfdatetime_filetime.Filetime(timestamp=access_time)
event = WinLnkLinkEvent(date_time,
definitions.TIME_DESCRIPTION_LAST_ACCESS,
lnk_file, link_target)
parser_mediator.ProduceEvent(event)
creation_time = lnk_file.get_file_creation_time_as_integer()
if creation_time != 0:
date_time = dfdatetime_filetime.Filetime(timestamp=creation_time)
event = WinLnkLinkEvent(date_time,
definitions.TIME_DESCRIPTION_CREATION,
lnk_file, link_target)
parser_mediator.ProduceEvent(event)
modification_time = lnk_file.get_file_modification_time_as_integer()
if modification_time != 0:
date_time = dfdatetime_filetime.Filetime(
timestamp=modification_time)
event = WinLnkLinkEvent(date_time,
definitions.TIME_DESCRIPTION_MODIFICATION,
lnk_file, link_target)
parser_mediator.ProduceEvent(event)
if access_time == 0 and creation_time == 0 and modification_time == 0:
date_time = dfdatetime_semantic_time.SemanticTime('Not set')
event = WinLnkLinkEvent(date_time,
definitions.TIME_DESCRIPTION_NOT_A_TIME,
lnk_file, link_target)
parser_mediator.ProduceEvent(event)
if lnk_file.droid_file_identifier:
try:
self._ParseDistributedTrackingIdentifier(
parser_mediator, lnk_file.droid_file_identifier,
display_name)
except (TypeError, ValueError) as exception:
parser_mediator.ProduceExtractionError(
'unable to read droid file identifier with error: {0:s}.'.
format(exception))
if lnk_file.birth_droid_file_identifier:
try:
self._ParseDistributedTrackingIdentifier(
parser_mediator, lnk_file.birth_droid_file_identifier,
display_name)
except (TypeError, ValueError) as exception:
parser_mediator.ProduceExtractionError(
('unable to read birth droid file identifier with error: '
'{0:s}.').format(exception))
lnk_file.close()
def _ParseRecord(self, parser_mediator, file_object, record_offset,
record_size):
"""Parses an INFO-2 record.
Args:
parser_mediator (ParserMediator): mediates interactions between parsers
and other components, such as storage and dfvfs.
file_object (dfvfs.FileIO): file-like object.
record_offset (int): record offset.
record_size (int): record size.
"""
record_data = file_object.read(record_size)
try:
ascii_filename = self._ASCII_STRING.parse(record_data)
except (IOError, construct.FieldError) as exception:
parser_mediator.ProduceExtractionError((
'unable to parse recycler ASCII filename at offset: 0x{0:08x} '
'with error: {1!s}').format(record_offset, exception))
try:
recycler_record_struct = self._RECYCLER_RECORD_STRUCT.parse(
record_data[self._RECORD_INDEX_OFFSET:])
except (IOError, construct.FieldError) as exception:
parser_mediator.ProduceExtractionError(
('unable to parse recycler index record at offset: 0x{0:08x} '
'with error: {1!s}').format(
record_offset + self._RECORD_INDEX_OFFSET, exception))
unicode_filename = None
if record_size == 800:
unicode_filename = binary.ReadUTF16(
record_data[self._UNICODE_FILENAME_OFFSET:])
ascii_filename = None
if ascii_filename and parser_mediator.codepage:
try:
ascii_filename = ascii_filename.decode(
parser_mediator.codepage)
except UnicodeDecodeError:
ascii_filename = ascii_filename.decode(
parser_mediator.codepage, errors='replace')
elif ascii_filename:
ascii_filename = repr(ascii_filename)
if recycler_record_struct.deletion_time == 0:
date_time = dfdatetime_semantic_time.SemanticTime('Not set')
else:
date_time = dfdatetime_filetime.Filetime(
timestamp=recycler_record_struct.deletion_time)
event_data = WinRecycleBinEventData()
event_data.drive_number = recycler_record_struct.drive_number
event_data.original_filename = unicode_filename or ascii_filename
event_data.file_size = recycler_record_struct.file_size
event_data.offset = record_offset
event_data.record_index = recycler_record_struct.index
event_data.short_filename = ascii_filename
event = time_events.DateTimeValuesEvent(
date_time, definitions.TIME_DESCRIPTION_DELETED)
parser_mediator.ProduceEventWithEventData(event, event_data)
def last_written_time(self):
"""dfdatetime.DateTimeValues: last written time."""
if self._last_written_time is None:
return dfdatetime_semantic_time.SemanticTime('Not set')
return dfdatetime_filetime.Filetime(timestamp=self._last_written_time)
def ExtractEvents(self, parser_mediator, registry_key, **kwargs):
"""Extracts events from a Windows Registry key.
Args:
parser_mediator (ParserMediator): mediates interactions between parsers
and other components, such as storage and dfvfs.
registry_key (dfwinreg.WinRegistryKey): Windows Registry key.
"""
names_key = registry_key.GetSubkeyByName('Names')
if not names_key:
parser_mediator.ProduceExtractionWarning('missing subkey: Names.')
return
last_written_time_per_username = {
registry_value.name: registry_value.last_written_time
for registry_value in names_key.GetSubkeys()}
for subkey in registry_key.GetSubkeys():
if subkey.name == 'Names':
continue
try:
f_value = self._ParseFValue(subkey)
except errors.ParseError as exception:
parser_mediator.ProduceExtractionWarning(
'unable to parse F value with error: {0!s}'.format(exception))
continue
registry_value = subkey.GetValueByName('V')
if not registry_value:
parser_mediator.ProduceExtractionWarning(
'missing Registry value: "V" in subkey: {0:s}.'.format(
subkey.name))
continue
v_value_map = self._GetDataTypeMap('v_value')
try:
v_value = self._ReadStructureFromByteStream(
registry_value.data, 0, v_value_map)
except (ValueError, errors.ParseError) as exception:
parser_mediator.ProduceExtractionWarning(
'unable to parse V value with error: {0!s}'.format(exception))
continue
username = self._ParseVValueString(
parser_mediator, registry_value.data, v_value[1])
fullname = self._ParseVValueString(
parser_mediator, registry_value.data, v_value[2])
comments = self._ParseVValueString(
parser_mediator, registry_value.data, v_value[3])
last_written_time = last_written_time_per_username.get(username, None)
# TODO: check if subkey.name == f_value.rid
event_data = SAMUsersWindowsRegistryEventData()
event_data.account_rid = f_value.rid
event_data.comments = comments
event_data.fullname = fullname
event_data.key_path = registry_key.path
event_data.login_count = f_value.number_of_logons
event_data.username = username
event = time_events.DateTimeValuesEvent(
last_written_time, definitions.TIME_DESCRIPTION_WRITTEN)
parser_mediator.ProduceEventWithEventData(event, event_data)
if f_value.last_login_time != 0:
date_time = dfdatetime_filetime.Filetime(
timestamp=f_value.last_login_time)
event = time_events.DateTimeValuesEvent(
date_time, definitions.TIME_DESCRIPTION_LAST_LOGIN)
parser_mediator.ProduceEventWithEventData(event, event_data)
if f_value.last_password_set_time != 0:
date_time = dfdatetime_filetime.Filetime(
timestamp=f_value.last_password_set_time)
event = time_events.DateTimeValuesEvent(
date_time, definitions.TIME_DESCRIPTION_LAST_PASSWORD_RESET)
parser_mediator.ProduceEventWithEventData(event, event_data)
def access_time(self): """dfdatetime.DateTimeValues: access time or None if not available.""" timestamp = self._fsntfs_file_entry.get_access_time_as_integer() return dfdatetime_filetime.Filetime(timestamp=timestamp)
def _ParseContainerTable(self, parser_mediator, table, container_name):
"""Parses a Container_# table.
Args:
parser_mediator (ParserMediator): mediates interactions between parsers
and other components, such as storage and dfvfs.
table (pyesedb.table): table.
container_name (str): container name, which indicates the table type.
Raises:
ValueError: if the table value is missing.
"""
if table is None:
raise ValueError('Missing table value.')
for record_index, esedb_record in enumerate(table.records):
if parser_mediator.abort:
break
# TODO: add support for:
# wpnidm, iecompat, iecompatua, DNTException, DOMStore
if container_name == 'Content':
value_mappings = self._CONTAINER_TABLE_VALUE_MAPPINGS
else:
value_mappings = None
try:
record_values = self._GetRecordValues(
parser_mediator,
table.name,
esedb_record,
value_mappings=value_mappings)
except UnicodeDecodeError:
parser_mediator.ProduceExtractionWarning(
('Unable to retrieve record values from record: {0:d} '
'in table: {1:s}').format(record_index, table.name))
continue
if (container_name in self._SUPPORTED_CONTAINER_NAMES
or container_name.startswith('MSHist')):
access_count = record_values.get('AccessCount', None)
cached_filename = record_values.get('Filename', None)
cached_file_size = record_values.get('FileSize', None)
cache_identifier = record_values.get('CacheId', None)
container_identifier = record_values.get('ContainerId', None)
entry_identifier = record_values.get('EntryId', None)
file_extension = record_values.get('FileExtension', None)
redirect_url = record_values.get('RedirectUrl', None)
sync_count = record_values.get('SyncCount', None)
url = record_values.get('Url', '')
# Ignore an URL that start with a binary value.
if ord(url[0]) < 0x20 or ord(url[0]) == 0x7f:
url = None
request_headers = record_values.get('RequestHeaders', None)
# Ignore non-Unicode request headers values.
if not isinstance(request_headers, str):
request_headers = None
response_headers = record_values.get('ResponseHeaders', None)
# Ignore non-Unicode response headers values.
if not isinstance(response_headers, str):
response_headers = None
event_data = MsieWebCacheContainerEventData()
event_data.access_count = access_count
event_data.cached_filename = cached_filename
event_data.cached_file_size = cached_file_size
event_data.cache_identifier = cache_identifier
event_data.container_identifier = container_identifier
event_data.entry_identifier = entry_identifier
event_data.file_extension = file_extension
event_data.redirect_url = redirect_url
event_data.request_headers = request_headers
event_data.response_headers = response_headers
event_data.sync_count = sync_count
event_data.url = url
timestamp = record_values.get('SyncTime', None)
if timestamp:
date_time = dfdatetime_filetime.Filetime(
timestamp=timestamp)
event = time_events.DateTimeValuesEvent(
date_time, 'Synchronization time')
parser_mediator.ProduceEventWithEventData(
event, event_data)
timestamp = record_values.get('CreationTime', None)
if timestamp:
date_time = dfdatetime_filetime.Filetime(
timestamp=timestamp)
event = time_events.DateTimeValuesEvent(
date_time, definitions.TIME_DESCRIPTION_CREATION)
parser_mediator.ProduceEventWithEventData(
event, event_data)
timestamp = record_values.get('ExpiryTime', None)
if timestamp:
date_time = dfdatetime_filetime.Filetime(
timestamp=timestamp)
event = time_events.DateTimeValuesEvent(
date_time, definitions.TIME_DESCRIPTION_EXPIRATION)
parser_mediator.ProduceEventWithEventData(
event, event_data)
timestamp = record_values.get('ModifiedTime', None)
if timestamp:
date_time = dfdatetime_filetime.Filetime(
timestamp=timestamp)
event = time_events.DateTimeValuesEvent(
date_time, definitions.TIME_DESCRIPTION_MODIFICATION)
parser_mediator.ProduceEventWithEventData(
event, event_data)
timestamp = record_values.get('AccessedTime', None)
if timestamp:
date_time = dfdatetime_filetime.Filetime(
timestamp=timestamp)
event = time_events.DateTimeValuesEvent(
date_time, definitions.TIME_DESCRIPTION_LAST_ACCESS)
parser_mediator.ProduceEventWithEventData(
event, event_data)
timestamp = record_values.get('PostCheckTime', None)
if timestamp:
date_time = dfdatetime_filetime.Filetime(
timestamp=timestamp)
event = time_events.DateTimeValuesEvent(
date_time, 'Post check time')
parser_mediator.ProduceEventWithEventData(
event, event_data)
def modification_time(self): """dfdatetime.DateTimeValues: modification time or None if not available.""" timestamp = self._fsntfs_file_entry.get_modification_time_as_integer() return dfdatetime_filetime.Filetime(timestamp=timestamp)
def ParseContainersTable(self,
parser_mediator,
database=None,
table=None,
**unused_kwargs):
"""Parses a Containers table.
Args:
parser_mediator (ParserMediator): mediates interactions between parsers
and other components, such as storage and dfvfs.
database (Optional[pyesedb.file]): ESE database.
table (Optional[pyesedb.table]): table.
Raises:
ValueError: if the database or table value is missing.
"""
if database is None:
raise ValueError('Missing database value.')
if table is None:
raise ValueError('Missing table value.')
for esedb_record in table.records:
if parser_mediator.abort:
break
record_values = self._GetRecordValues(parser_mediator, table.name,
esedb_record)
event_data = MsieWebCacheContainersEventData()
event_data.container_identifier = record_values.get(
'ContainerId', None)
event_data.directory = record_values.get('Directory', None)
event_data.name = record_values.get('Name', None)
event_data.set_identifier = record_values.get('SetId', None)
timestamp = record_values.get('LastScavengeTime', None)
if timestamp:
date_time = dfdatetime_filetime.Filetime(timestamp=timestamp)
event = time_events.DateTimeValuesEvent(
date_time, 'Last Scavenge Time')
parser_mediator.ProduceEventWithEventData(event, event_data)
timestamp = record_values.get('LastAccessTime', None)
if timestamp:
date_time = dfdatetime_filetime.Filetime(timestamp=timestamp)
event = time_events.DateTimeValuesEvent(
date_time, definitions.TIME_DESCRIPTION_LAST_ACCESS)
parser_mediator.ProduceEventWithEventData(event, event_data)
container_identifier = record_values.get('ContainerId', None)
container_name = record_values.get('Name', None)
if not container_identifier or not container_name:
continue
if container_name in self._IGNORED_CONTAINER_NAMES:
parser_mediator.ProduceExtractionWarning(
'Skipped container (ContainerId: {0:d}, Name: {1:s})'.
format(container_identifier, container_name))
continue
table_name = 'Container_{0:d}'.format(container_identifier)
esedb_table = database.get_table_by_name(table_name)
if not esedb_table:
parser_mediator.ProduceExtractionWarning(
'Missing table: {0:s}'.format(table_name))
continue
self._ParseContainerTable(parser_mediator, esedb_table,
container_name)
def creation_time(self): """dfdatetime.Filetime: creation time or None if not set.""" timestamp = self._fsntfs_attribute.get_creation_time_as_integer() return dfdatetime_filetime.Filetime(timestamp=timestamp)
def CreateTestEvents():
"""Creates events for testing.
Returns:
list[EventObject]: events.
"""
test_events = []
hostname = 'MYHOSTNAME'
data_type = 'test:event'
event = events.EventObject()
event.username = '******'
event.filename = 'c:/Users/joesmith/NTUSER.DAT'
event.hostname = hostname
event.timestamp = 0
event.data_type = data_type
event.text = ''
test_events.append(event)
filetime = dfdatetime_filetime.Filetime()
# TODO: move this to a WindowsRegistryEvent unit test.
event_data = windows_events.WindowsRegistryEventData()
event_data.key_path = 'MY AutoRun key'
event_data.hostname = hostname
event_data.regvalue = {'Value': 'c:/Temp/evil.exe'}
filetime.CopyFromString('2012-04-20 22:38:46.929596')
event = time_events.DateTimeValuesEvent(
filetime, definitions.TIME_DESCRIPTION_WRITTEN)
_MergeEventAndEventData(event, event_data)
test_events.append(event)
event_data = windows_events.WindowsRegistryEventData()
event_data.key_path = 'HKEY_CURRENT_USER\\Secret\\EvilEmpire\\Malicious_key'
event_data.hostname = hostname
event_data.regvalue = {'Value': 'send all the exes to the other world'}
filetime.CopyFromString('2012-04-20 23:56:46.929596')
event = time_events.DateTimeValuesEvent(
filetime, definitions.TIME_DESCRIPTION_WRITTEN)
_MergeEventAndEventData(event, event_data)
test_events.append(event)
event_data = windows_events.WindowsRegistryEventData()
event_data.key_path = 'HKEY_CURRENT_USER\\Windows\\Normal'
event_data.hostname = hostname
event_data.regvalue = {'Value': 'run all the benign stuff'}
filetime.CopyFromString('2012-04-20 16:44:46')
event = time_events.DateTimeValuesEvent(
filetime, definitions.TIME_DESCRIPTION_WRITTEN)
_MergeEventAndEventData(event, event_data)
test_events.append(event)
timestamp = timelib.Timestamp.CopyFromString('2012-04-30 10:29:47.929596')
filename = 'c:/Temp/evil.exe'
attributes = {
'text': 'This log line reads ohh so much.'}
event = TestEvent(timestamp, attributes)
event.filename = filename
event.hostname = hostname
test_events.append(event)
timestamp = timelib.Timestamp.CopyFromString('2012-04-30 10:29:47.929596')
attributes = {
'text': 'Nothing of interest here, move on.'}
event = TestEvent(timestamp, attributes)
event.filename = filename
event.hostname = hostname
test_events.append(event)
timestamp = timelib.Timestamp.CopyFromString('2012-04-30 13:06:47.939596')
attributes = {
'text': 'Mr. Evil just logged into the machine and got root.'}
event = TestEvent(timestamp, attributes)
event.filename = filename
event.hostname = hostname
test_events.append(event)
timestamp = timelib.Timestamp.CopyFromString('2012-06-05 22:14:19.000000')
# TODO: refactor to use event data.
event = time_events.TimestampEvent(
timestamp, definitions.TIME_DESCRIPTION_WRITTEN,
data_type='text:entry')
event.hostname = 'nomachine'
event.offset = 12
event.body = (
'This is a line by someone not reading the log line properly. And '
'since this log line exceeds the accepted 80 chars it will be '
'shortened.')
# TODO: fix missing body attribute
event.text = event.body
event.username = '******'
test_events.append(event)
return test_events
def modification_time(self): """dfdatetime.Filetime: modification time.""" timestamp = self._fsntfs_attribute.get_modification_time_as_integer() return dfdatetime_filetime.Filetime(timestamp=timestamp)
def _ParseUrl(self,
parser_mediator,
format_version,
cache_directories,
msiecf_item,
recovered=False):
"""Extract data from a MSIE Cache Files (MSIECF) URL item.
Every item is stored as an event object, one for each timestamp.
Args:
parser_mediator (ParserMediator): mediates interactions between parsers
and other components, such as storage and dfvfs.
format_version (str): MSIECF format version.
cache_directories (list[str]): cache directory names.
msiecf_item (pymsiecf.url): MSIECF URL item.
recovered (Optional[bool]): True if the item was recovered.
"""
# The secondary time can be stored in either UTC or local time
# this is dependent on what the index.dat file is used for.
# Either the file path or location string can be used to distinguish
# between the different type of files.
timestamp = msiecf_item.get_primary_time_as_integer()
if not timestamp:
primary_date_time = dfdatetime_semantic_time.NotSet()
else:
primary_date_time = dfdatetime_filetime.Filetime(
timestamp=timestamp)
primary_date_time_description = 'Primary Time'
timestamp = msiecf_item.get_secondary_time_as_integer()
secondary_date_time = dfdatetime_filetime.Filetime(timestamp=timestamp)
secondary_date_time_description = 'Secondary Time'
if msiecf_item.type:
if msiecf_item.type == 'cache':
primary_date_time_description = definitions.TIME_DESCRIPTION_LAST_ACCESS
secondary_date_time_description = (
definitions.TIME_DESCRIPTION_MODIFICATION)
elif msiecf_item.type == 'cookie':
primary_date_time_description = definitions.TIME_DESCRIPTION_LAST_ACCESS
secondary_date_time_description = (
definitions.TIME_DESCRIPTION_MODIFICATION)
elif msiecf_item.type == 'history':
primary_date_time_description = (
definitions.TIME_DESCRIPTION_LAST_VISITED)
secondary_date_time_description = (
definitions.TIME_DESCRIPTION_LAST_VISITED)
elif msiecf_item.type == 'history-daily':
primary_date_time_description = (
definitions.TIME_DESCRIPTION_LAST_VISITED)
secondary_date_time_description = (
definitions.TIME_DESCRIPTION_LAST_VISITED)
# The secondary_date_time is in localtime normalize it to be in UTC.
secondary_date_time.is_local_time = True
elif msiecf_item.type == 'history-weekly':
primary_date_time_description = definitions.TIME_DESCRIPTION_CREATION
secondary_date_time_description = (
definitions.TIME_DESCRIPTION_LAST_VISITED)
# The secondary_date_time is in localtime normalize it to be in UTC.
secondary_date_time.is_local_time = True
http_headers = ''
if msiecf_item.type and msiecf_item.data:
if msiecf_item.type == 'cache':
if msiecf_item.data[:4] == b'HTTP':
# Make sure the HTTP headers are ASCII encoded.
# TODO: determine correct encoding currently indications that
# this could be the system narrow string codepage.
try:
http_headers = msiecf_item.data[:-1].decode('ascii')
except UnicodeDecodeError:
parser_mediator.ProduceExtractionWarning((
'unable to decode HTTP headers of URL record at offset: '
'0x{0:08x}. Characters that cannot be decoded will be '
'replaced with "?" or "\\ufffd".').format(
msiecf_item.offset))
http_headers = msiecf_item.data[:-1].decode(
'ascii', errors='replace')
# TODO: parse data of other URL item type like history which requires
# OLE VT parsing.
event_data = MSIECFURLEventData()
event_data.cached_filename = msiecf_item.filename
event_data.cached_file_size = msiecf_item.cached_file_size
event_data.cache_directory_index = msiecf_item.cache_directory_index
event_data.http_headers = http_headers
event_data.number_of_hits = msiecf_item.number_of_hits
event_data.offset = msiecf_item.offset
event_data.recovered = recovered
event_data.url = msiecf_item.location
if (event_data.cache_directory_index >= 0
and event_data.cache_directory_index < len(cache_directories)):
event_data.cache_directory_name = (
cache_directories[event_data.cache_directory_index])
event = time_events.DateTimeValuesEvent(primary_date_time,
primary_date_time_description)
parser_mediator.ProduceEventWithEventData(event, event_data)
if secondary_date_time.timestamp != 0:
event = time_events.DateTimeValuesEvent(
secondary_date_time,
secondary_date_time_description,
time_zone=parser_mediator.timezone)
parser_mediator.ProduceEventWithEventData(event, event_data)
expiration_timestamp = msiecf_item.get_expiration_time_as_integer()
if expiration_timestamp != 0:
# The expiration time in MSIECF version 4.7 is stored as a FILETIME value
# in version 5.2 it is stored as a FAT date time value.
# Since the as_integer function returns the raw integer value we need to
# apply the right conversion here.
if format_version == '4.7':
if expiration_timestamp == 0x7fffffffffffffff:
expiration_date_time = dfdatetime_semantic_time.Never()
else:
expiration_date_time = dfdatetime_filetime.Filetime(
timestamp=expiration_timestamp)
else:
if expiration_timestamp == 0xffffffff:
expiration_date_time = dfdatetime_semantic_time.Never()
else:
expiration_date_time = dfdatetime_fat_date_time.FATDateTime(
fat_date_time=expiration_timestamp)
event = time_events.DateTimeValuesEvent(
expiration_date_time, definitions.TIME_DESCRIPTION_EXPIRATION)
parser_mediator.ProduceEventWithEventData(event, event_data)
last_checked_timestamp = msiecf_item.get_last_checked_time_as_integer()
if last_checked_timestamp != 0:
last_checked_date_time = dfdatetime_fat_date_time.FATDateTime(
fat_date_time=last_checked_timestamp)
event = time_events.DateTimeValuesEvent(
last_checked_date_time,
definitions.TIME_DESCRIPTION_LAST_CHECKED)
parser_mediator.ProduceEventWithEventData(event, event_data)
def _ParseGUIDTable(self, parser_mediator, cache, database, esedb_table,
values_map, event_data_class):
"""Parses a table with a GUID as name.
Args:
parser_mediator (ParserMediator): mediates interactions between parsers
and other components, such as storage and dfvfs.
cache (ESEDBCache): cache, which contains information about
the identifiers stored in the SruDbIdMapTable table.
database (ESEDatabase): ESE database.
esedb_table (pyesedb.table): table.
values_map (dict[str, str]): mapping of table columns to event data
attribute names.
event_data_class (type): event data class.
Raises:
ValueError: if the cache, database or table value is missing.
"""
if cache is None:
raise ValueError('Missing cache value.')
if database is None:
raise ValueError('Missing database value.')
if esedb_table is None:
raise ValueError('Missing table value.')
identifier_mappings = self._GetIdentifierMappings(
parser_mediator, cache, database)
for esedb_record in esedb_table.records:
if parser_mediator.abort:
break
record_values = self._GetRecordValues(
parser_mediator,
esedb_table.name,
esedb_record,
value_mappings=self._GUID_TABLE_VALUE_MAPPINGS)
event_data = event_data_class()
for attribute_name, column_name in values_map.items():
record_value = record_values.get(column_name, None)
if attribute_name in ('application', 'user_identifier'):
# Human readable versions of AppId and UserId values are stored
# in the SruDbIdMapTable table; also referred to as identifier
# mapping. Here we look up the numeric identifier stored in the GUID
# table in SruDbIdMapTable.
record_value = identifier_mappings.get(
record_value, record_value)
setattr(event_data, attribute_name, record_value)
timestamp = record_values.get('TimeStamp')
if timestamp:
date_time = dfdatetime_ole_automation_date.OLEAutomationDate(
timestamp=timestamp)
timestamp_description = definitions.TIME_DESCRIPTION_SAMPLE
else:
date_time = dfdatetime_semantic_time.NotSet()
timestamp_description = definitions.TIME_DESCRIPTION_NOT_A_TIME
event = time_events.DateTimeValuesEvent(date_time,
timestamp_description)
parser_mediator.ProduceEventWithEventData(event, event_data)
timestamp = record_values.get('ConnectStartTime')
if timestamp:
date_time = dfdatetime_filetime.Filetime(timestamp=timestamp)
event = time_events.DateTimeValuesEvent(
date_time, definitions.TIME_DESCRIPTION_FIRST_CONNECTED)
parser_mediator.ProduceEventWithEventData(event, event_data)
def _ParseInfo2Record(self, parser_mediator, file_object, record_offset,
record_size):
"""Parses an INFO-2 record.
Args:
parser_mediator (ParserMediator): mediates interactions between parsers
and other components, such as storage and dfvfs.
file_object (dfvfs.FileIO): file-like object.
record_offset (int): record offset.
record_size (int): record size.
Raises:
ParseError: if the record cannot be read.
"""
record_data = self._ReadData(file_object, record_offset, record_size)
record_map = self._GetDataTypeMap('recycler_info2_file_entry')
try:
record = self._ReadStructureFromByteStream(record_data,
record_offset,
record_map)
except (ValueError, errors.ParseError) as exception:
raise errors.ParseError(
('Unable to map record data at offset: 0x{0:08x} with error: '
'{1!s}').format(record_offset, exception))
codepage = parser_mediator.codepage or 'ascii'
# The original filename can contain remnant data after the end-of-string
# character.
ascii_filename = record.original_filename.split(b'\x00')[0]
try:
ascii_filename = ascii_filename.decode(codepage)
except UnicodeDecodeError:
ascii_filename = ascii_filename.decode(codepage, errors='replace')
parser_mediator.ProduceExtractionWarning(
'unable to decode original filename.')
unicode_filename = None
if record_size > 280:
record_offset += 280
utf16_string_map = self._GetDataTypeMap(
'recycler_info2_file_entry_utf16le_string')
try:
unicode_filename = self._ReadStructureFromByteStream(
record_data[280:], record_offset, utf16_string_map)
except (ValueError, errors.ParseError) as exception:
raise errors.ParseError((
'Unable to map record data at offset: 0x{0:08x} with error: '
'{1!s}').format(record_offset, exception))
if record.deletion_time == 0:
date_time = dfdatetime_semantic_time.NotSet()
else:
date_time = dfdatetime_filetime.Filetime(
timestamp=record.deletion_time)
event_data = WinRecycleBinEventData()
event_data.drive_number = record.drive_number
event_data.original_filename = unicode_filename or ascii_filename
event_data.file_size = record.original_file_size
event_data.offset = record_offset
event_data.record_index = record.index
if ascii_filename != unicode_filename:
event_data.short_filename = ascii_filename
event = time_events.DateTimeValuesEvent(
date_time, definitions.TIME_DESCRIPTION_DELETED)
parser_mediator.ProduceEventWithEventData(event, event_data)
def _CreateTestKey(self, key_path, time_string):
"""Creates Registry keys and values for testing.
Args:
key_path (str): Windows Registry key path.
time_string (str): key last written date and time.
Returns:
dfwinreg.WinRegistryKey: a Windows Registry key.
"""
filetime = dfdatetime_filetime.Filetime()
filetime.CopyFromDateTimeString(time_string)
registry_key = dfwinreg_fake.FakeWinRegistryKey(
'TestDriver',
key_path=key_path,
last_written_time=filetime.timestamp,
offset=1456)
value_data = b'\x02\x00\x00\x00'
registry_value = dfwinreg_fake.FakeWinRegistryValue(
'Type',
data=value_data,
data_type=dfwinreg_definitions.REG_DWORD,
offset=123)
registry_key.AddValue(registry_value)
value_data = b'\x02\x00\x00\x00'
registry_value = dfwinreg_fake.FakeWinRegistryValue(
'Start',
data=value_data,
data_type=dfwinreg_definitions.REG_DWORD,
offset=127)
registry_key.AddValue(registry_value)
value_data = b'\x01\x00\x00\x00'
registry_value = dfwinreg_fake.FakeWinRegistryValue(
'ErrorControl',
data=value_data,
data_type=dfwinreg_definitions.REG_DWORD,
offset=131)
registry_key.AddValue(registry_value)
value_data = 'Pnp Filter'.encode('utf_16_le')
registry_value = dfwinreg_fake.FakeWinRegistryValue(
'Group',
data=value_data,
data_type=dfwinreg_definitions.REG_SZ,
offset=140)
registry_key.AddValue(registry_value)
value_data = 'Test Driver'.encode('utf_16_le')
registry_value = dfwinreg_fake.FakeWinRegistryValue(
'DisplayName',
data=value_data,
data_type=dfwinreg_definitions.REG_SZ,
offset=160)
registry_key.AddValue(registry_value)
value_data = 'testdriver.inf_x86_neutral_dd39b6b0a45226c4'.encode(
'utf_16_le')
registry_value = dfwinreg_fake.FakeWinRegistryValue(
'DriverPackageId',
data=value_data,
data_type=dfwinreg_definitions.REG_SZ,
offset=180)
registry_key.AddValue(registry_value)
value_data = 'C:\\Dell\\testdriver.sys'.encode('utf_16_le')
registry_value = dfwinreg_fake.FakeWinRegistryValue(
'ImagePath',
data=value_data,
data_type=dfwinreg_definitions.REG_SZ,
offset=200)
registry_key.AddValue(registry_value)
return registry_key
def ParseFileLNKFile(
self, parser_mediator, file_object, display_name):
"""Parses a Windows Shortcut (LNK) file-like object.
Args:
parser_mediator (ParserMediator): mediates interactions between parsers
and other components, such as storage and dfvfs.
file_object (dfvfs.FileIO): file-like object.
display_name (str): display name.
"""
lnk_file = pylnk.file()
lnk_file.set_ascii_codepage(parser_mediator.codepage)
try:
lnk_file.open_file_object(file_object)
except IOError as exception:
parser_mediator.ProduceExtractionError(
'unable to open file with error: {0!s}'.format(exception))
return
link_target = None
if lnk_file.link_target_identifier_data:
# TODO: change file_entry.name to display name once it is generated
# correctly.
display_name = parser_mediator.GetFilename()
shell_items_parser = shell_items.ShellItemsParser(display_name)
shell_items_parser.ParseByteStream(
parser_mediator, lnk_file.link_target_identifier_data,
codepage=parser_mediator.codepage)
link_target = shell_items_parser.CopyToPath()
event_data = WinLnkLinkEventData()
event_data.birth_droid_file_identifier = (
lnk_file.birth_droid_file_identifier)
event_data.birth_droid_volume_identifier = (
lnk_file.birth_droid_volume_identifier)
event_data.command_line_arguments = lnk_file.command_line_arguments
event_data.description = lnk_file.description
event_data.drive_serial_number = lnk_file.drive_serial_number
event_data.drive_type = lnk_file.drive_type
event_data.droid_file_identifier = lnk_file.droid_file_identifier
event_data.droid_volume_identifier = lnk_file.droid_volume_identifier
event_data.env_var_location = lnk_file.environment_variables_location
event_data.file_attribute_flags = lnk_file.file_attribute_flags
event_data.file_size = lnk_file.file_size
event_data.icon_location = lnk_file.icon_location
event_data.link_target = link_target
event_data.local_path = lnk_file.local_path
event_data.network_path = lnk_file.network_path
event_data.relative_path = lnk_file.relative_path
event_data.volume_label = lnk_file.volume_label
event_data.working_directory = lnk_file.working_directory
access_time = lnk_file.get_file_access_time_as_integer()
if access_time != 0:
date_time = dfdatetime_filetime.Filetime(timestamp=access_time)
event = time_events.DateTimeValuesEvent(
date_time, definitions.TIME_DESCRIPTION_LAST_ACCESS)
parser_mediator.ProduceEventWithEventData(event, event_data)
creation_time = lnk_file.get_file_creation_time_as_integer()
if creation_time != 0:
date_time = dfdatetime_filetime.Filetime(timestamp=creation_time)
event = time_events.DateTimeValuesEvent(
date_time, definitions.TIME_DESCRIPTION_CREATION)
parser_mediator.ProduceEventWithEventData(event, event_data)
modification_time = lnk_file.get_file_modification_time_as_integer()
if modification_time != 0:
date_time = dfdatetime_filetime.Filetime(timestamp=modification_time)
event = time_events.DateTimeValuesEvent(
date_time, definitions.TIME_DESCRIPTION_MODIFICATION)
parser_mediator.ProduceEventWithEventData(event, event_data)
if access_time == 0 and creation_time == 0 and modification_time == 0:
date_time = dfdatetime_semantic_time.SemanticTime('Not set')
event = time_events.DateTimeValuesEvent(
date_time, definitions.TIME_DESCRIPTION_NOT_A_TIME)
parser_mediator.ProduceEventWithEventData(event, event_data)
if lnk_file.droid_file_identifier:
try:
self._ParseDistributedTrackingIdentifier(
parser_mediator, lnk_file.droid_file_identifier, display_name)
except (TypeError, ValueError) as exception:
parser_mediator.ProduceExtractionError(
'unable to read droid file identifier with error: {0!s}.'.format(
exception))
if lnk_file.birth_droid_file_identifier:
try:
self._ParseDistributedTrackingIdentifier(
parser_mediator, lnk_file.birth_droid_file_identifier, display_name)
except (TypeError, ValueError) as exception:
parser_mediator.ProduceExtractionError((
'unable to read birth droid file identifier with error: '
'{0!s}.').format(exception))
lnk_file.close()
def _CreateTestKey(self, key_path, time_string):
"""Creates Registry keys and values for testing.
Args:
key_path (str): Windows Registry key path.
time_string (str): key last written date and time.
Returns:
dfwinreg.WinRegistryKey: a Windows Registry key.
"""
filetime = dfdatetime_filetime.Filetime()
filetime.CopyFromDateTimeString(time_string)
registry_key = dfwinreg_fake.FakeWinRegistryKey(
'Session Manager',
key_path=key_path,
last_written_time=filetime.timestamp,
offset=153)
value_data = 'autocheck autochk *\x00'.encode('utf_16_le')
registry_value = dfwinreg_fake.FakeWinRegistryValue(
'BootExecute',
data=value_data,
data_type=dfwinreg_definitions.REG_MULTI_SZ,
offset=123)
registry_key.AddValue(registry_value)
value_data = '2592000'.encode('utf_16_le')
registry_value = dfwinreg_fake.FakeWinRegistryValue(
'CriticalSectionTimeout',
data=value_data,
data_type=dfwinreg_definitions.REG_SZ,
offset=153)
registry_key.AddValue(registry_value)
value_data = '\x00'.encode('utf_16_le')
registry_value = dfwinreg_fake.FakeWinRegistryValue(
'ExcludeFromKnownDlls',
data=value_data,
data_type=dfwinreg_definitions.REG_MULTI_SZ,
offset=163)
registry_key.AddValue(registry_value)
value_data = '0'.encode('utf_16_le')
registry_value = dfwinreg_fake.FakeWinRegistryValue(
'GlobalFlag',
data=value_data,
data_type=dfwinreg_definitions.REG_SZ,
offset=173)
registry_key.AddValue(registry_value)
value_data = '0'.encode('utf_16_le')
registry_value = dfwinreg_fake.FakeWinRegistryValue(
'HeapDeCommitFreeBlockThreshold',
data=value_data,
data_type=dfwinreg_definitions.REG_SZ,
offset=183)
registry_key.AddValue(registry_value)
value_data = '0'.encode('utf_16_le')
registry_value = dfwinreg_fake.FakeWinRegistryValue(
'HeapDeCommitTotalFreeThreshold',
data=value_data,
data_type=dfwinreg_definitions.REG_SZ,
offset=203)
registry_key.AddValue(registry_value)
value_data = '0'.encode('utf_16_le')
registry_value = dfwinreg_fake.FakeWinRegistryValue(
'HeapSegmentCommit',
data=value_data,
data_type=dfwinreg_definitions.REG_SZ,
offset=213)
registry_key.AddValue(registry_value)
value_data = '0'.encode('utf_16_le')
registry_value = dfwinreg_fake.FakeWinRegistryValue(
'HeapSegmentReserve',
data=value_data,
data_type=dfwinreg_definitions.REG_SZ,
offset=223)
registry_key.AddValue(registry_value)
value_data = '2'.encode('utf_16_le')
registry_value = dfwinreg_fake.FakeWinRegistryValue(
'NumberOfInitialSessions',
data=value_data,
data_type=dfwinreg_definitions.REG_SZ,
offset=243)
registry_key.AddValue(registry_value)
return registry_key
def _ParseUSNChangeJournal(self, parser_mediator, usn_change_journal):
"""Parses an USN change journal.
Args:
parser_mediator (ParserMediator): mediates interactions between parsers
and other components, such as storage and dfvfs.
usn_change_journal (pyfsntsfs.usn_change_journal): USN change journal.
Raises:
ParseError: if an USN change journal record cannot be parsed.
"""
if not usn_change_journal:
return
usn_record_map = self._GetDataTypeMap('usn_record_v2')
usn_record_data = usn_change_journal.read_usn_record()
while usn_record_data:
current_offset = usn_change_journal.get_offset()
try:
usn_record = self._ReadStructureFromByteStream(
usn_record_data, current_offset, usn_record_map)
except (ValueError, errors.ParseError) as exception:
raise errors.ParseError((
'Unable to parse USN record at offset: 0x{0:08x} with error: '
'{1!s}').format(current_offset, exception))
# Per MSDN we need to use name offset for forward compatibility.
name_offset = usn_record.name_offset - 60
utf16_stream = usn_record.name[name_offset:usn_record.name_size]
try:
name_string = utf16_stream.decode('utf-16-le')
except (UnicodeDecodeError, UnicodeEncodeError) as exception:
name_string = utf16_stream.decode('utf-16-le',
errors='replace')
parser_mediator.ProduceExtractionError((
'unable to decode USN record name string with error: '
'{0:s}. Characters that cannot be decoded will be replaced '
'with "?" or "\\ufffd".').format(exception))
event_data = NTFSUSNChangeEventData()
event_data.file_attribute_flags = usn_record.file_attribute_flags
event_data.file_reference = usn_record.file_reference
event_data.filename = name_string
event_data.offset = current_offset
event_data.parent_file_reference = usn_record.parent_file_reference
event_data.update_reason_flags = usn_record.update_reason_flags
event_data.update_sequence_number = usn_record.update_sequence_number
event_data.update_source_flags = usn_record.update_source_flags
if not usn_record.update_date_time:
date_time = dfdatetime_semantic_time.SemanticTime('Not set')
else:
date_time = dfdatetime_filetime.Filetime(
timestamp=usn_record.update_date_time)
event = time_events.DateTimeValuesEvent(
date_time, definitions.TIME_DESCRIPTION_ENTRY_MODIFICATION)
parser_mediator.ProduceEventWithEventData(event, event_data)
usn_record_data = usn_change_journal.read_usn_record()
def ExtractEvents(self, parser_mediator, registry_key, **kwargs):
"""Extracts events from a Windows Registry key.
Args:
parser_mediator (ParserMediator): mediates interactions between parsers
and other components, such as storage and dfvfs.
registry_key (dfwinreg.WinRegistryKey): Windows Registry key.
"""
names_key = registry_key.GetSubkeyByName(u'Names')
if not names_key:
parser_mediator.ProduceExtractionError(u'missing subkey: Names.')
return
last_written_time_per_username = {
registry_value.name: registry_value.last_written_time
for registry_value in names_key.GetSubkeys()
}
for subkey in registry_key.GetSubkeys():
if subkey.name == u'Names':
continue
f_value = subkey.GetValueByName(u'F')
if not f_value:
parser_mediator.ProduceExtractionError(
u'missing Registry value: "F" in subkey: {0:s}.'.format(
subkey.name))
continue
v_value = subkey.GetValueByName(u'V')
if not v_value:
parser_mediator.ProduceExtractionError(
u'missing Registry value: "V" in subkey: {0:s}.'.format(
subkey.name))
continue
try:
f_data_struct = self._F_VALUE_STRUCT.parse(f_value.data)
except construct.FieldError as exception:
parser_mediator.ProduceExtractionError(
(u'unable to parse Registry value: "F" in subkey: {0:s} '
u'with error: {1:s}.').format(subkey.name, exception))
continue
try:
v_data_struct = self._V_VALUE_HEADER.parse(v_value.data)
except construct.FieldError as exception:
parser_mediator.ProduceExtractionError(
(u'unable to parse Registry value: "V" in subkey: {0:s} '
u'with error: {1:s}.').format(subkey.name, exception))
continue
v_header_values = v_data_struct.values()[0]
data_start_offset = v_header_values[
3] + self._V_VALUE_STRINGS_OFFSET
data_end_offset = v_header_values[4] + data_start_offset
utf16_stream = v_value.data[data_start_offset:data_end_offset]
try:
username = utf16_stream.decode(u'utf-16-le')
except (UnicodeDecodeError, UnicodeEncodeError) as exception:
username = utf16_stream.decode(u'utf-16-le', errors=u'replace')
parser_mediator.ProduceExtractionError((
u'unable to decode username string with error: {0:s}. Characters '
u'that cannot be decoded will be replaced with "?" or '
u'"\\ufffd".').format(exception))
data_start_offset = v_header_values[
6] + self._V_VALUE_STRINGS_OFFSET
data_end_offset = v_header_values[7] + data_start_offset
utf16_stream = v_value.data[data_start_offset:data_end_offset]
try:
fullname = utf16_stream.decode(u'utf-16-le')
except (UnicodeDecodeError, UnicodeEncodeError) as exception:
fullname = utf16_stream.decode(u'utf-16-le', errors=u'replace')
parser_mediator.ProduceExtractionError((
u'unable to decode fullname string with error: {0:s}. Characters '
u'that cannot be decoded will be replaced with "?" or '
u'"\\ufffd".').format(exception))
data_start_offset = v_header_values[
9] + self._V_VALUE_STRINGS_OFFSET
data_end_offset = v_header_values[10] + data_start_offset
utf16_stream = v_value.data[data_start_offset:data_end_offset]
try:
comments = utf16_stream.decode(u'utf-16-le')
except (UnicodeDecodeError, UnicodeEncodeError) as exception:
comments = utf16_stream.decode(u'utf-16-le', errors=u'replace')
parser_mediator.ProduceExtractionError((
u'unable to decode comments string with error: {0:s}. Characters '
u'that cannot be decoded will be replaced with "?" or '
u'"\\ufffd".').format(exception))
last_written_time = last_written_time_per_username.get(
username, None)
# TODO: check if subkey.name == f_data_struct.rid
if last_written_time:
values_dict = {
u'account_rid': f_data_struct.rid,
u'login_count': f_data_struct.login_count
}
if username:
values_dict[u'username'] = username
if fullname:
values_dict[u'full_name'] = fullname
if comments:
values_dict[u'comments'] = comments
event_data = windows_events.WindowsRegistryEventData()
event_data.key_path = registry_key.path
event_data.offset = registry_key.offset
event_data.regvalue = values_dict
event_data.source_append = self._SOURCE_APPEND
event = time_events.DateTimeValuesEvent(
last_written_time, eventdata.EventTimestamp.WRITTEN_TIME)
parser_mediator.ProduceEventWithEventData(event, event_data)
event_data = SAMUsersWindowsRegistryEventData()
event_data.account_rid = f_data_struct.rid
event_data.comments = comments
event_data.fullname = fullname
event_data.key_path = registry_key.path
event_data.login_count = f_data_struct.login_count
event_data.offset = f_value.offset
event_data.username = username
if f_data_struct.last_login != 0:
date_time = dfdatetime_filetime.Filetime(
timestamp=f_data_struct.last_login)
event = time_events.DateTimeValuesEvent(
date_time, eventdata.EventTimestamp.LAST_LOGIN_TIME)
parser_mediator.ProduceEventWithEventData(event, event_data)
if f_data_struct.password_reset != 0:
date_time = dfdatetime_filetime.Filetime(
timestamp=f_data_struct.password_reset)
event = time_events.DateTimeValuesEvent(
date_time, eventdata.EventTimestamp.LAST_PASSWORD_RESET)
parser_mediator.ProduceEventWithEventData(event, event_data)
def ParseDestList(self, parser_mediator, olecf_item):
"""Parses the DestList OLECF item.
Args:
parser_mediator (ParserMediator): mediates interactions between parsers
and other components, such as storage and dfvfs.
olecf_item (pyolecf.item): OLECF item.
"""
try:
header = self._DEST_LIST_STREAM_HEADER.parse_stream(olecf_item)
except (IOError, construct.FieldError) as exception:
raise errors.UnableToParseFile(
'Unable to parse DestList header with error: {0!s}'.format(
exception))
if header.format_version not in (1, 3, 4):
parser_mediator.ProduceExtractionError(
'unsupported format version: {0:d}.'.format(header.format_version))
if header.format_version == 1:
dest_list_stream_entry = self._DEST_LIST_STREAM_ENTRY_V1
elif header.format_version in (3, 4):
dest_list_stream_entry = self._DEST_LIST_STREAM_ENTRY_V3
entry_offset = olecf_item.get_offset()
while entry_offset < olecf_item.size:
try:
entry = dest_list_stream_entry.parse_stream(olecf_item)
except (IOError, construct.FieldError) as exception:
raise errors.UnableToParseFile(
'Unable to parse DestList entry with error: {0!s}'.format(
exception))
if not entry:
break
display_name = 'DestList entry at offset: 0x{0:08x}'.format(entry_offset)
try:
droid_volume_identifier = self._ParseDistributedTrackingIdentifier(
parser_mediator, entry.droid_volume_identifier, display_name)
except (TypeError, ValueError) as exception:
droid_volume_identifier = ''
parser_mediator.ProduceExtractionError(
'unable to read droid volume identifier with error: {0!s}'.format(
exception))
try:
droid_file_identifier = self._ParseDistributedTrackingIdentifier(
parser_mediator, entry.droid_file_identifier, display_name)
except (TypeError, ValueError) as exception:
droid_file_identifier = ''
parser_mediator.ProduceExtractionError(
'unable to read droid file identifier with error: {0!s}'.format(
exception))
try:
birth_droid_volume_identifier = (
self._ParseDistributedTrackingIdentifier(
parser_mediator, entry.birth_droid_volume_identifier,
display_name))
except (TypeError, ValueError) as exception:
birth_droid_volume_identifier = ''
parser_mediator.ProduceExtractionError((
'unable to read birth droid volume identifier with error: '
'{0:s}').format(
exception))
try:
birth_droid_file_identifier = self._ParseDistributedTrackingIdentifier(
parser_mediator, entry.birth_droid_file_identifier, display_name)
except (TypeError, ValueError) as exception:
birth_droid_file_identifier = ''
parser_mediator.ProduceExtractionError((
'unable to read birth droid file identifier with error: '
'{0:s}').format(
exception))
if entry.last_modification_time == 0:
date_time = dfdatetime_semantic_time.SemanticTime('Not set')
else:
date_time = dfdatetime_filetime.Filetime(
timestamp=entry.last_modification_time)
event_data = AutomaticDestinationsDestListEntryEventData()
event_data.birth_droid_file_identifier = birth_droid_file_identifier
event_data.birth_droid_volume_identifier = birth_droid_volume_identifier
event_data.droid_file_identifier = droid_file_identifier
event_data.droid_volume_identifier = droid_volume_identifier
event_data.entry_number = entry.entry_number
event_data.hostname = binary.ByteStreamCopyToString(
entry.hostname, codepage='ascii')
event_data.offset = entry_offset
event_data.path = binary.UTF16StreamCopyToString(entry.path)
event_data.pin_status = entry.pin_status
event = time_events.DateTimeValuesEvent(
date_time, definitions.TIME_DESCRIPTION_MODIFICATION)
parser_mediator.ProduceEventWithEventData(event, event_data)
entry_offset = olecf_item.get_offset()
