Content Mapping Between Log Output and CEF Syslog Type

Request Example

GET https://api.tmcas.trendmicro.com/v1/siem/security_events?service=exchange&event=dlp&format=cef
Authorization: Bearer 1de231142eef3f83928da98dc251fbebb6cafed4

Response

Response Example

{
    "current_link":"https://api.tmcas.trendmicro.com/siem/v1/security_events?service=exchange&event=securityrisk&
     start=2018-09-23T03:35:07.000Z&end=2018-09-25T05:47:07.000Z&limit=10&format=cef",
    "next_link":"https://api.tmcas.trendmicro.com/siem/v1/security_events?service=exchange&event=securityrisk&
     start=2018-09-23T03:35:07.000Z&end=2018-09-25T05:47:07.000Z&limit=10&page_id=<randomly generated value>=&format=cef",
    "last_log_item_generation_time":"2018-09-25T02:43:31Z",
    "security_events":["CEF:0|Trend Micro|CAS|5.0|100,101|securityrisk|High  
     DevicePayloadId=IwUVemkBIMKdAHkUVwi- destinationServiceName=Exchange Online 
     cat=security_risk_scan msg=Real-time scan TrendMicroCasAffectedUser=username1@example1.onmicrosoft.com 
     TrendMicroCasLocation=username1@example1.onmicrosoft.com\\Junk Email rt=2018-09-25T02:43:31Z 
     TrendMicroCasPolicyName=phishing test from jimmy TrendMicroCasFilter=Web Reputation act=Quarantine 
     TrendMicroCasThreatType=Phishing outcome=success suid=<DM6PR01MB41868726C4F662504F963431994B0@DM6PR01MB4186.prod.exchangelabs.com> 
     suser=<username2@example2.com> duser=[\"\\\"username1\\\"<username1@example1.onmicrosoft.com>\"] 
     start=2018-09-25T02:43:21 end=2018-09-25T02:43:05 TrendMicroCasMailSubject=FW: test 
     TrendMicroCasMailFileName=filename.exe cs2Label=detected_by cs2= TrendMicroCasRiskLevel= 
     fileHash=f0bb4b3f4ac5f7b3228feeba2ed10c1a0a0f8d44  
     TrendMicroCasFileSha256=11a62297f719eddf268a53db1433531ea7f8ea22c72630708db6adef71b59865 
     TrendMicroCasVaReportLink=https://api-dev.tmcas.trendmicro.net/v1/siem/security_events/va_analysis_report?report_id=
     7ca0b75044627a884322cf29290fecc048d93b129bee48fa0b0c875a3feb1ecfc739a64b896a5278&language=en"]
}

Response Fields

Note All time-related fields in the table are set to Coordinated Universal Time (UTC).

Extension

CEF Key	Cloud App Security Log Output	Description and Value
devicepayloadid	security_events/log_item_id	ID that uniquely identifies a log item Example: NdGBDmYBWu4z8GKN0JHL
destinationServiceName	security_events/service	Name of the requested service Example: exchange
cat	security_events/event	Type of the requested security event Example: security_risk_scan
Common fields in "message"
msg	security_events/message/scan_type	Whether it is a real-time scan or manual scan that detected the security event Example: Real-time scan
TrendMicroCasAffectedUser	security_events/message/affected_user	Mailbox that received an email message triggering the security event, or user account that uploaded or modified a file triggering the security event Example: username@example.com
TrendMicroCasLocation	security_events/message/location	Location where the security event was detected Example: username@example.com\Junk Email
rt	security_events/message/detection_time	Date and time when the security event was detected Example: 2018-09-25T02:14:40Z
TrendMicroCasPolicyName	security_events/message/triggered_policy_name	Name of a configured policy that was violated Example: phishing test from username
TrendMicroCasFilter	security_events/message/triggered_security_filter	Name of the security filter that detected the security event Example: Web Reputation
act	security_events/message/action	Action that Cloud App Security took after detecting the security event Example: Quarantine
outcome	security_events/message/action_result	Whether the action was successfully taken or not Example: success
TrendMicroCasThreatType	security_events/message/threat_type	Threat type detected in the security event Example: Phishing
TrendMicroCasMailEnvelopeSender	security_events/message/mail_message_envelope_sender	Message envelope sender Example: user@example1.onmicrosoft.com Note This field is available only for Exchange Online (Inline Mode).
TrendMicroCasMailDirection	security_events/message/mail_message_direction	Mail direction, indicating whether the email is inbound or outbound message Example: Inbound Note This field is available only for Exchange Online (Inline Mode).
Email related fields in "message"
suid	security_events/message/mail_message_id	ID of the email message that triggered the security event Example: <0ee59974fb7c48538b3e077f5c40b875@example.com>
suser	security_events/message/mail_message_sender	Email address of the sender Example: username@example.com
duser	security_events/message/mail_message_recipient	Email address(es) of the recipient(s) Example: "\"username\"<username@example.com>"
deviceCustomDate1Label	security_events/message/mail_message_submit_time	Date and time when the email message triggering the security event was submitted to send Value: mail_message_submit_time
deviceCustomDate1	security_events/message/mail_message_submit_time	The value for deviceCustomDate1Label Example: 2018-09-25T02:14:25.818Z
deviceCustomDate2Label	security_events/message/mail_message_delivery_time	Date and time when the email message triggering the security event was delivered to the recipient Value: mail_message_delivery_time Note This field is not available for Exchange Online (Inline Mode).
deviceCustomDate2	security_events/message/mail_message_delivery_time	The value for deviceCustomDate2Label Example: 2018-09-25T02:14:25.818Z Note This field is not available for Exchange Online (Inline Mode).
TrendMicroCasMailSubject	security_events/message/mail_message_subject	Subject of the email message that triggered the security event Example: example
TrendMicroCasMailFileName	security_events/message/mail_message_file_name	Name of the email attachment that triggered the security event Example: filename.exe
File related fields in "message"
fname	security_events/message/file_name	Name of the file that triggered the security event Example: example.pdf
fileCreateTime	security_events/message/file_upload_time	Date and time when the file triggering the security event was uploaded Example: 2018-09-25T02:14:25.818Z
Log type related fields in "message"
Security Risk Scan
cs1Label	security_events/message/security_risk_name	Name of the security risk detected Value: security_risk_name
cs1	security_events/message/security_risk_name	The value for cs1Label Example: Spyware: http://wrs21.winshipway.com
cs2Label	security_events/message/detected_by	Technology or method through which the email message or file triggering the security event was detected Value: detected_by
cs2	security_events/message/detected_by	The value for cs2Label Example: Web Reputation
TrendMicroCasRiskLevel	security_events/message/risk_level	Web Reputation risk level assigned to the analyzed URL that triggered the security event Example: Dangerous
fileHash	security_events/message/file_sha1	SHA-1 hash value of the file that triggered the security event Example: fd4a7c09dc2c48c1390e09a72b86adaf504802b5
TrendMicroCasFileSha256	security_events/message/file_sha256	SHA-256 hash value of the file that triggered the security event Example: 11a62297f719eddf268a53db1433531ea7f8ea22c72630708db6adef71b59865
Virtual Analyzer
cs3Label	security_events/message/virus_name	Name of the virus detected Value: virus_name
cs3	security_events/message/virus_name	The value for cs3Label Example: VAN_BOT.UMXX
fileHash	security_events/message/file_sha1	SHA-1 hash value of the file that triggered the security event Example: 0636ed126113daef6d509d9352d47defaed04508
TrendMicroCasRiskLevel	security_events/message/risk_level	Virtual Analyzer risk level assigned to the analyzed object that triggered the security event Example: Medium risk
cs4Label	security_events/message/detection_type	Type of the suspicious object that triggered the security event Value: detection_type
cs4	security_events/message/detection_type	The value for cs4Label Example: File
TrendMicroCasVaReportLink	security_events/message/va_report_link	Virtual Analyzer report download link Example: https://api.tmcas.trendmicro.com/v1/siem/security_events/va_analysis_report?report_id=38baa2*************************fd7187324
TrendMicroCasFileSha256	security_events/message/file_sha256	SHA-256 hash value of the file that triggered the security event Example: 11a62297f719eddf268a53db1433531ea7f8ea22c72630708db6adef71b59865
Ransomware
cs5Label	security_events/message/ransomware_name	Name of the ransomware detected Value: ransomware_name
cs5	security_events/message/ransomware_name	The value for cs5Label Example: Ransom_CRYPWALL.MVP
Data Loss Prevention
cs6Label	security_events/message/triggered_dlp_template	Details of the compliance template that was violated to trigger the security event Value: triggered_dlp_template
cs6	security_events/message/triggered_dlp_template	The value for cs6Label Example: All: Credit Card Number