def main(): stix_package = STIXPackage() ttp = TTP(title="Phishing") stix_package.add_ttp(ttp) # Create the indicator for just the subject email_subject_object = EmailMessage() email_subject_object.header = EmailHeader() email_subject_object.header.subject = "[IMPORTANT] Please Review Before" email_subject_object.header.subject.condition = "StartsWith" email_subject_indicator = Indicator() email_subject_indicator.title = "Malicious E-mail Subject Line" email_subject_indicator.add_indicator_type("Malicious E-mail") email_subject_indicator.observable = email_subject_object email_subject_indicator.confidence = "Low" # Create the indicator for just the attachment file_attachment_object = EmailMessage() file_attachment_object.attachments = Attachments() attached_file_object = File() attached_file_object.file_name = "Final Report" attached_file_object.file_name.condition = "StartsWith" attached_file_object.file_extension = "doc.exe" attached_file_object.file_extension.condition = "Equals" file_attachment_object.add_related(attached_file_object, "Contains", inline=True) file_attachment_object.attachments.append(file_attachment_object.parent.id_) indicator_attachment = Indicator() indicator_attachment.title = "Malicious E-mail Attachment" indicator_attachment.add_indicator_type("Malicious E-mail") indicator_attachment.observable = file_attachment_object indicator_attachment.confidence = "Low" # Create the combined indicator w/ both subject an attachment full_email_object = EmailMessage() full_email_object.attachments = Attachments() # Add the previously referenced file as another reference rather than define it again: full_email_object.attachments.append(file_attachment_object.parent.id_) full_email_object.header = EmailHeader() full_email_object.header.subject = "[IMPORTANT] Please Review Before" full_email_object.header.subject.condition = "StartsWith" combined_indicator = Indicator(title="Malicious E-mail") combined_indicator.add_indicator_type("Malicious E-mail") combined_indicator.confidence = Confidence(value="High") combined_indicator.observable = full_email_object email_subject_indicator.add_indicated_ttp(TTP(idref=ttp.id_)) indicator_attachment.add_indicated_ttp(TTP(idref=ttp.id_)) combined_indicator.add_indicated_ttp(TTP(idref=ttp.id_)) stix_package.indicators = [combined_indicator, email_subject_indicator, indicator_attachment] print stix_package.to_xml()
def generateEmailAttachmentObject(indicator, filename): file_object = File() file_object.file_name = filename email = EmailMessage() email.attachments = Attachments() email.add_related(file_object, "Contains", inline=True) email.attachments.append(file_object.parent.id_) indicator.observable = email
def generateEmailAttachmentObject(indicator, attribute): file_object = File() file_object.file_name = attribute["value"] email = EmailMessage() email.attachments = Attachments() email.add_related(file_object, "Contains", inline=True) file_object.parent.id_ = cybox.utils.idgen.__generator.namespace.prefix + ":file-" + attribute["uuid"] email.attachments.append(file_object.parent.id_) email.parent.id_ = cybox.utils.idgen.__generator.namespace.prefix + ":EmailMessage-" + attribute["uuid"] observable = Observable(email) observable.id_ = cybox.utils.idgen.__generator.namespace.prefix + ":observable-" + attribute["uuid"] indicator.observable = observable
def generateEmailAttachmentObject(indicator, attribute): file_object = File() file_object.file_name = attribute["value"] file_object.file_name.condition = "Equals" email = EmailMessage() email.attachments = Attachments() email.add_related(file_object, "Contains", inline=True) file_object.parent.id_ = cybox.utils.idgen.__generator.namespace.prefix + ":file-" + attribute["uuid"] email.attachments.append(file_object.parent.id_) email.parent.id_ = cybox.utils.idgen.__generator.namespace.prefix + ":EmailMessage-" + attribute["uuid"] observable = Observable(email) observable.id_ = cybox.utils.idgen.__generator.namespace.prefix + ":observable-" + attribute["uuid"] indicator.observable = observable
def generate_email_attachment_object(self, indicator, attribute): attribute_uuid = attribute.uuid file_object = File() file_object.file_name = attribute.value file_object.file_name.condition = "Equals" file_object.parent.id_ = "{}:FileObject-{}".format(self.namespace_prefix, attribute_uuid) email = EmailMessage() email.attachments = Attachments() email.add_related(file_object, "Contains", inline=True) email.attachments.append(file_object.parent.id_) email.parent.id_ = "{}:EmailMessageObject-{}".format(self.namespace_prefix, attribute_uuid) observable = Observable(email) observable.id_ = "{}:observable-{}".format(self.namespace_prefix, attribute_uuid) indicator.observable = observable
def __parse_email_message(self, msg): """ Parses the supplied message Returns a map of message parts expressed as cybox objects. Keys: 'message', 'files', 'urls' """ files = [] url_list = [] domain_list = [] message = EmailMessage() # Headers are required (for now) message.header = self.__create_cybox_headers(msg) if self.include_attachments: files = self.__create_cybox_files(msg) message.attachments = Attachments() for f in files: message.attachments.append(f.parent.id_) f.add_related(message, "Contained_Within", inline=False) if self.include_raw_headers: raw_headers_str = self.__get_raw_headers(msg).strip() if raw_headers_str: message.raw_header = String(raw_headers_str) # need this for parsing urls AND raw body text raw_body = "\n".join(self.__get_raw_body_text(msg)).strip() if self.include_raw_body and raw_body: message.raw_body = String(raw_body) if self.include_urls: (url_list, domain_list) = self.__parse_urls(raw_body) if url_list: links = Links() for u in url_list: links.append(LinkReference(u.parent.id_)) if links: message.links = links # Return a list of all objects we've built return [message] + files + url_list + domain_list
def to_cybox_observable(self, exclude=None): """ Convert an email to a CybOX Observables. Pass parameter exclude to specify fields that should not be included in the returned object. Returns a tuple of (CybOX object, releasability list). To get the cybox object as xml or json, call to_xml() or to_json(), respectively, on the resulting CybOX object. """ if exclude == None: exclude = [] observables = [] obj = EmailMessage() # Assume there is going to be at least one header obj.header = EmailHeader() if 'message_id' not in exclude: obj.header.message_id = String(self.message_id) if 'subject' not in exclude: obj.header.subject = String(self.subject) if 'sender' not in exclude: obj.header.sender = Address(self.sender, Address.CAT_EMAIL) if 'reply_to' not in exclude: obj.header.reply_to = Address(self.reply_to, Address.CAT_EMAIL) if 'x_originating_ip' not in exclude: obj.header.x_originating_ip = Address(self.x_originating_ip, Address.CAT_IPV4) if 'x_mailer' not in exclude: obj.header.x_mailer = String(self.x_mailer) if 'boundary' not in exclude: obj.header.boundary = String(self.boundary) if 'raw_body' not in exclude: obj.raw_body = self.raw_body if 'raw_header' not in exclude: obj.raw_header = self.raw_header #copy fields where the names differ between objects if 'helo' not in exclude and 'email_server' not in exclude: obj.email_server = String(self.helo) if ('from_' not in exclude and 'from' not in exclude and 'from_address' not in exclude): obj.header.from_ = EmailAddress(self.from_address) if 'date' not in exclude and 'isodate' not in exclude: obj.header.date = DateTime(self.isodate) obj.attachments = Attachments() observables.append(Observable(obj)) return (observables, self.releasability)
def execute(self, device_info, extracted_data_dir_path): original_app_path = '/data/data/com.android.email' headers_db_rel_file_path = os.path.join('databases', 'EmailProvider.db') bodies_db_rel_file_path = os.path.join('databases', 'EmailProviderBody.db') original_headers_db_file_path = os.path.join(original_app_path, headers_db_rel_file_path) original_bodies_db_file_path = os.path.join(original_app_path, bodies_db_rel_file_path) headers_db_file_path = os.path.join(extracted_data_dir_path, headers_db_rel_file_path) bodies_db_file_path = os.path.join(extracted_data_dir_path, bodies_db_rel_file_path) source_objects = [ create_file_object(headers_db_file_path, original_headers_db_file_path), create_file_object(bodies_db_file_path, original_bodies_db_file_path) ] inspected_objects = {} cursor, conn = execute_query(headers_db_file_path, 'SELECT * FROM message') for row in cursor: header = EmailHeader() header.to = row['toList'] header.cc = row['ccList'] header.bcc = row['bccList'] header.from_ = row['fromList'] header.subject = row['subject'] header.in_reply_to = row['replyToList'] header.date = datetime.fromtimestamp(row['timeStamp'] / 1000) # Convert from milliseconds to seconds header.message_id = row['messageId'] email = EmailMessage() email.header = header email.add_related(source_objects[0], ObjectRelationship.TERM_EXTRACTED_FROM, inline=False) # Add the email to the inspected_objects dict using its _id value as key. email_id = row['_id'] inspected_objects[email_id] = email cursor.close() conn.close() # Add full raw body to emails. cursor, conn = execute_query(bodies_db_file_path, 'SELECT _id, htmlContent, textContent FROM body') for row in cursor: email_id = row['_id'] email = inspected_objects.get(email_id) if email is not None: if row['htmlContent'] != '': email.raw_body = row['htmlContent'] email.header.content_type = 'text/html' else: email.raw_body = row['textContent'] email.header.content_type = 'text/plain' email.add_related(source_objects[1], ObjectRelationship.TERM_EXTRACTED_FROM, inline=False) cursor.close() # Add attachments to emails. cursor, conn = execute_query(headers_db_file_path, 'SELECT messageKey, contentUri FROM attachment') # Iteration over attachments for row in cursor: # Get current attachment email_id. email_id = row['messageKey'] # Find email in inspected_objects. email = inspected_objects.get(email_id) # If email has non attachments, initialize them. if email.attachments is None: email.attachments = Attachments() # Using contentUri, get attachment folder_prefix and file_name. attachment_rel_path_dirs = re.search('.*//.*/(.*)/(.*)/.*', row['contentUri']) # Group(1): contains attachment folder. # Group(2): contains attachment file_name. attachment_rel_file_path = os.path.join('databases', attachment_rel_path_dirs.group(1) + '.db_att', attachment_rel_path_dirs.group(2)) # Build attachment absolute file path in extracted_data. attachment_file_path = os.path.join(extracted_data_dir_path, attachment_rel_file_path) # Build attachment original file_path in device. original_attachment_file_path = os.path.join(original_app_path, attachment_rel_file_path) # Create attachment source_file. attachment = create_file_object(attachment_file_path, original_attachment_file_path) # Add attachment to email's attachments. email.attachments.append(attachment.parent.id_) # Add relation between attachment and it's email. attachment.add_related(email, ObjectRelationship.TERM_CONTAINED_WITHIN, inline=False) source_objects.append(attachment) cursor.close() conn.close() return inspected_objects.values(), source_objects
def main(): stix_package = STIXPackage() ttp = TTP(title="Phishing") stix_package.add_ttp(ttp) # Create the indicator for just the subject email_subject_object = EmailMessage() email_subject_object.header = EmailHeader() email_subject_object.header.subject = "[IMPORTANT] Please Review Before" email_subject_object.header.subject.condition = "StartsWith" email_subject_indicator = Indicator() email_subject_indicator.title = "Malicious E-mail Subject Line" email_subject_indicator.add_indicator_type("Malicious E-mail") email_subject_indicator.observable = email_subject_object email_subject_indicator.confidence = "Low" # Create the indicator for just the attachment file_attachment_object = EmailMessage() file_attachment_object.attachments = Attachments() attached_file_object = File() attached_file_object.file_name = "Final Report" attached_file_object.file_name.condition = "StartsWith" attached_file_object.file_extension = "doc.exe" attached_file_object.file_extension.condition = "Equals" file_attachment_object.add_related(attached_file_object, "Contains", inline=True) file_attachment_object.attachments.append(attached_file_object.parent.id_) indicator_attachment = Indicator() indicator_attachment.title = "Malicious E-mail Attachment" indicator_attachment.add_indicator_type("Malicious E-mail") indicator_attachment.observable = file_attachment_object indicator_attachment.confidence = "Low" # Create the combined indicator w/ both subject an attachment full_email_object = EmailMessage() full_email_object.attachments = Attachments() # Add the previously referenced file as another reference rather than define it again: full_email_object.attachments.append(attached_file_object.parent.id_) full_email_object.header = EmailHeader() full_email_object.header.subject = "[IMPORTANT] Please Review Before" full_email_object.header.subject.condition = "StartsWith" combined_indicator = Indicator(title="Malicious E-mail") combined_indicator.add_indicator_type("Malicious E-mail") combined_indicator.confidence = Confidence(value="High") combined_indicator.observable = full_email_object email_subject_indicator.add_indicated_ttp(TTP(idref=ttp.id_)) indicator_attachment.add_indicated_ttp(TTP(idref=ttp.id_)) combined_indicator.add_indicated_ttp(TTP(idref=ttp.id_)) stix_package.add_indicator(combined_indicator) stix_package.add_indicator(email_subject_indicator) stix_package.add_indicator(indicator_attachment) print(stix_package.to_xml(encoding=None))
def cybox_object_email(obj): e = EmailMessage() e.raw_body = obj.raw_body e.raw_header = obj.raw_header # Links e.links = Links() for link in obj.links.all(): pass # Attachments e.attachments = Attachments() attachment_objects = [] for att in obj.attachments.all(): for meta in att.file_meta.all(): fobj = cybox_object_file(att, meta) e.attachments.append(fobj.parent.id_) fobj.add_related(e, "Contained_Within", inline=False) attachment_objects.append(fobj) # construct header information h = EmailHeader() h.subject = obj.subject h.date = obj.email_date h.message_id = obj.message_id h.content_type = obj.content_type h.mime_version = obj.mime_version h.user_agent = obj.user_agent h.x_mailer = obj.x_mailer # From for from_ in obj.from_string.all(): from_address = EmailAddress(from_.sender) from_address.is_spoofed = from_.is_spoofed from_address.condition = from_.condition h.from_ = from_address # Sender for sender in obj.sender.all(): sender_address = EmailAddress(sender.sender) sender_address.is_spoofed = sender.is_spoofed sender_address.condition = sender.condition h.sender.add(sender_address) # To recipients = EmailRecipients() for recipient in obj.recipients.all(): rec_address = EmailAddress(recipient.recipient) rec_address.is_spoofed = recipient.is_spoofed rec_address.condition = recipient.condition recipients.append(rec_address) h.to = recipients # CC recipients = EmailRecipients() for recipient in obj.recipients_cc.all(): rec_address = EmailAddress(recipient.recipient) rec_address.is_spoofed = recipient.is_spoofed rec_address.condition = recipient.condition recipients.append(rec_address) h.cc = recipients # BCC recipients = EmailRecipients() for recipient in obj.recipients_bcc.all(): rec_address = EmailAddress(recipient.recipient) rec_address.is_spoofed = recipient.is_spoofed rec_address.condition = recipient.condition recipients.append(rec_address) h.bcc = recipients e.header = h return e, attachment_objects
# get all comments for the current attachment objectid comments = db.comments.find({'obj_id': ObjectId(yid)}) for comment in comments: # check if the comments contain string 'analyst note' if comment['comment'].lower().startswith('analyst note'): acomment = re.sub(r'\banalyst note\b', '', comment['comment'], flags=re.IGNORECASE) else: # no comments acomment = 'none' # Create the indicator for just the attachment file_attachment_object = EmailMessage() file_attachment_object.attachments = Attachments() attached_file_object = File() attached_file_object.file_name = xfilename attached_file_object.file_name.condition = "Equals" file_attachment_object.add_related(attached_file_object, "Contains", inline=True) file_attachment_object.attachments.append( attached_file_object.parent.id_) attachdescription = "Phishing email attachment\nFrom: %s\nSubj: %s\n Filename: %s\nSize: %s\nMD5: %s\nSHA1: %s\nSHA256: %s\nSSDEEP: %s\nAnalyst Notes: %s\n"\ %(xfrom,xsubject,xfilename,xfilesize,xmd5,xsha1,xsha256,xssdeep,acomment) indicator_attachment = Indicator(description=attachdescription) indicator_attachment.title = "Phishing E-mail Attachment"