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LEEF Detection Logs: Email Detection Logs

LEEF Key
Description
Value 
Header (logVer)
LEEF format version
LEEF: 1.0
Header (vendor)
Appliance vendor
 Trend Micro
Header (pname)
Appliance product
 Deep Discovery Email Inspector
Header (pver)
Appliance version
Example: 5.1.0.1110
Header (eventName)
Event Name
EMAIL_DETECTION
act
The action in the event
Examples:
  • analyzed
  • cleaned up
  • deleted
  • delivered directly
  • encrypted
  • file sanitized
  • passed
  • quarantined
  • recipient changed
  • stamped
  • stripped
  • subjectsTagged
deviceGUID
Appliance GUID
Example: 6B593E17AFB7-40FBBB28-A4CE-0462-A536
devTime
Log generation time
Example: Jan 28 2015 02:00:36 GMT+00:00
devTimeFormat
Time format
MMM dd yyyy HH:mm:ss z
duser
Email recipients
Example: user1@domain2.com;test@163.com
dvc
Appliance IP address
Example: 10.1.144.199
dvchost
Appliance host name
Example: localhost
dvcmac
Appliance MAC address
Example: 00:0C:29:6E:CB:F9
mailMsgSubject
Email subject
Example: hello
messageId
Email ID
Example: <20150414032514.494EF1E9A365@internalbeta.bcc.ddei>
msgSize
Email Size
Example: 30841
msgUuid
Internal email ID
Example: 6965222B-13A6-C705-89D4-6251B6C41E03
rcptMail
Recipient email address
Example: user2@domain.com
senderMail
Sender email address
Example: user1@domain.com
sev
Severity
  • 2: Unavailable
  • 4: Low
  • 6: Medium
  • 8: High
src
Source IP address
Example: 10.1.144.199
suser
Email sender
Example: user2@domain.com
threatName
Names of threats in the email
Example: VAN_MALWARE.UMXX|FRAUD_PHISHING.WRS
threatType
Threat type
  • 1: Targeted malware
  • 2: Malware
  • 3: Malicious URL
  • 4: Suspicious file
  • 5: Suspicious URL
  • 6: Spam/Graymail
  • 7: Phishing
  • 8: Content violation
  • 9: DLP incident
Note
Note
When using the LEEF log syntax, separate event attributes with \0x09 as a tab delimiter.
Log sample:
May 15 16:00:47 localhost　LEEF:1.0|Trend Micro|Deep Discovery 
Email Inspector|2.5.1.1161|EMAIL_DETECTION|=8\0x09threatType=
4\0x09deviceGUID=034eb532-9318-40d9-b27b-d9feba7c269e0x09mess
ageId=<20150413072949.E8C0D1E9A363@internalbeta.bcc.ddei>\0x0
9msgUuid=6C4A91D7-1396-1405-94C5-D955018F938E\0x09mailMsgSubj
ect=Orcamento Total - 5636005\0x09src=69.162.64.30\0x09msgSiz
e=397113\0x09dvchost=internalbeta.bcc.ddei\0x09dvc=10.64.1.13
1\0x09act=passed\0x09duser=user1@domain1.com\0x09devTime=Apr 
13 2015 07:29:50 GMT+00:00\0x09suser=www-data@contato30.danet
mail.net\0x09dvcmac=C4:34:6B:B8:09:BC\0x09devTimeFormat=MMM d
d yyyy HH:mm:ss z\0x09threatName=VAN_BACKDOOR.UMXX