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Syslog message formats

Common Event Format (CEF) and Log Event Extended Format (LEEF) log message formats are slightly different. For example, the "Source User" column in the GUI corresponds to a field named "suser" in CEF; in LEEF, the same field is named "usrName" instead. Log message fields also vary by whether the event originated on the Deep Security Agent or Manager and which feature created the log message.

If your syslog messages are being truncated, it may be because you're using User Datagram Protocol (UDP). To prevent truncation, transfer your syslog messages over Transport Layer Security (TLS) instead. For instructions on switching to TLS, see Define a Syslog configuration.

Basic syslog format is not supported by the Anti-Malware, Web Reputation, Integrity Monitoring, and Application Control protection modules.

If the syslog messages are sent from the manager, there are several differences. In order to preserve the original Deep Security Agent hostname (the source of the event), a new extension ("dvc" or "dvchost") is present. "dvc" is used if the hostname is an IPv4 address; "dvchost" is used for hostnames and IPv6 addresses. Additionally, the extension "TrendMicroDsTags" is used if the events are tagged. (This applies only to auto-tagging with run on future, since events are forwarded via syslog only as they are collected by the manager.) The product for logs relayed through the manager will still read " Deep Security Agent"; however, the product version is the version of the manager.

CEF syslog message format

All CEF events include 'dvc=IPv4 Address' or 'dvchost=Hostname' (or the IPv6 address) for the purposes of determining the original Deep Security Agent source of the event. This extension is important for events sent from a Deep Security Virtual Appliance or Manager, since in this case the syslog sender of the message is not the originator of the event.

To determine whether the log entry comes from the Deep Security Manager or a Deep Security Agent, look at the "Device Product" field:

Events that occur on a VM that is protected by a virtual appliance, but that don't have an in-guest agent, will still be identified as coming from an agent.

To further determine what kind of rule triggered the event, look at the "Signature ID" and "Name" fields:

The "Signature ID" value indicates what kind of event has been triggered:

Signature IDs	Description
10	Custom Intrusion Prevention (IPS) rule
20	Log-only Firewall rule
21	Deny Firewall rule
30	Custom Integrity Monitoring rule
40	Custom Log Inspection rule
100-7499	System events
100-199	Policy Firewall rule and Firewall stateful configuration
200-299	IPS internal errors
300-399	SSL/TLS events
500-899	IPS normalization
1,000,000-1,999,999	Trend Micro IPS rule. The signature ID is the same as the IPS rule ID.
2,000,000-2,999,999	Integrity Monitoring rule. The signature ID is the Integrity Monitoring rule ID + 1,000,000.
3,000,000-3,999,999	Log Inspection rule. The signature ID is the Log Inspection rule ID + 2,000,000.
4,000,000-4,999,999	Anti-Malware events. Currently, only these signature IDs are used: 4,000,000 - Anti-Malware - Real-Time Scan 4,000,001 - Anti-Malware - Manual Scan 4,000,002 - Anti-Malware - Scheduled Scan 4,000,003 - Anti-Malware - Quick Scan 4,000,010 - Anti-Spyware - Real-Time Scan 4,000,011 - Anti-Spyware - Manual Scan 4,000,012 - Anti-Spyware - Scheduled Scan 4,000,013 - Anti-Spyware - Quick Scan 4,000,020 - Suspicious Activity - Real-Time Scan 4,000,030 - Unauthorized Change - Real-Time Scan
5,000,000-5,999,999	Web Reputation events. Currently, only these signature IDs are used: 5,000,000 - Web Reputation - Blocked 5,000,001 - Web Reputation - Detect Only
6,000,000-6,999,999	Application Control events. Currently, only these signature IDs are used: 6,001,100 - Application Control - Detect Only, in block list 6,001,200 - Application Control - Detect Only, not in allow list 6,002,100 - Application Control - Blocked, in block list 6,002,200 - Application Control – Blocked, not in allow list

Log entries don't always have all CEF extensions described in the event log format tables below. CEF extensions also may not be always in the same order. If you are using regular expressions (regex) to parse the entries, make sure your expressions do not depend on each key-value pair to exist, or to be in a specific order.

Syslog messages are limited to 64 KB by the syslog protocol specification. If the message is longer, data may be truncated. The basic syslog format is limited to 1 KB.

LEEF 2.0 syslog message format

Sample LEEF 2.0 Log Entry (DSM System Event Log Sample): LEEF:2.0|Trend Micro|Deep Security Manager|<DSA version>|192|cat=System name=Alert Ended desc=Alert: CPU Warning Threshold Exceeded\nSubject: 10.201.114.164\nSeverity: Warning sev=3 src=10.201.114.164 usrName=System msg=Alert: CPUWarning Threshold Exceeded\nSubject: 10.201.114.164\nSeverity:Warning TrendMicroDsTenant=Primary

Events originating in the manager

System event log format

Sample LEEF 2.0 Log Entry: LEEF:2.0|Trend Micro|Deep Security Manager|<DSA version>|192|cat=System name=Alert Ended desc=Alert: CPU Warning Threshold Exceeded\nSubject: 10.201.114.164\nSeverity: Warning sev=3 src=10.201.114.164 usrName=System msg=Alert: CPU Warning Threshold Exceeded\nSubject: 10.201.114.164\nSeverity: Warning TrendMicroDsTenant=Primary

LEEF format uses a reserved "sev" key to show severity and "name" for the Name value.

CEF Extension Field	LEEF Extension Field	Name	Description	Examples
src	src	Source IP Address	Deep Security Manager IP address.	src=10.52.116.23
suser	usrName	Source User	Deep Security Manager administrator's account.	suser=MasterAdmin
target	target	Target Entity	The subject of the event. It can be the administrator account logged into Deep Security Manager, or a computer.	target=MasterAdmin target=server01
targetID	targetID	Target Entity ID	The identifier added in the manager.	targetID=1
targetType	targetType	Target Entity Type	The event target entity type.	targetType=Host
msg	msg	Details	Details of the system event. May contain a verbose description of the event.	msg=User password incorrect for username MasterAdmin on an attempt to sign in from 127.0.0.1 msg=A Scan for Recommendations on computer (localhost) has completed...
TrendMicroDsTags	TrendMicroDsTags	Event Tags	Deep Security event tags assigned to the event	TrendMicroDsTags=suspicious
TrendMicroDsTenant	TrendMicroDsTenant	Tenant Name	Deep Security tenant	TrendMicroDsTenant=Primary
TrendMicroDsTenantId	TrendMicroDsTenantId	Tenant ID	Deep Security tenant ID	TrendMicroDsTenantId=0
None	sev	Severity	The severity of the event. 1 is the least severe; 10 is the most severe.	sev=3
None	cat	Category	Event category	cat=System
None	name	Name	Event name	name=Alert Ended
None	desc	Description	Event description	desc:Alert: CPU Warning Threshold Exceeded

Events originating in the agent

Anti-Malware event format

Sample CEF Log Entry: CEF:0|Trend Micro|Deep Security Agent|<DSA version>|4000000|Eicar_test_file|6|cn1=1 cn1Label=Host ID dvchost=hostname cn2=205 cn2Label=Quarantine File Size cs6=ContainerImageName | ContainerName | ContainerID cs6Label=Container filePath=C:\\Users\\trend\\Desktop\\eicar.exe act=Delete msg=Realtime TrendMicroDsMalwareTarget=N/A TrendMicroDsMalwareTargetType=N/TrendMicroDsFileMD5=44D88612FEA8A8F36DE82E1278ABB02F TrendMicroDsFileSHA1=3395856CE81F2B7382DEE72602F798B642F14140 TrendMicroDsFileSHA256=275A021BBFB6489E54D471899F7DB9D1663FC695EC2FE2A2C4538AABF651FD0F TrendMicroDsDetectionConfidence=95 TrendMicroDsRelevantDetectionNames=Ransom_CERBER.BZC;Ransom_CERBER.C;Ransom_CRYPNISCA.SM

Sample LEEF Log Entry: LEEF: 2.0|Trend Micro|Deep Security Agent|<DSA version>|4000030|cat=Anti-Malware name=HEU_AEGIS_CRYPT desc=HEU_AEGIS_CRYPT sev=6 cn1=241 cn1Label=Host ID dvc=10.0.0.1 TrendMicroDsTags=FS TrendMicroDsTenant=Primary TrendMicroDsTenantId=0 filePath=C:\\Windows\\System32\\virus.exe act=Terminate msg=Realtime TrendMicroDsMalwareTarget=Multiple TrendMicroDsMalwareTargetType=File System TrendMicroDsFileMD5=1947A1BC0982C5871FA3768CD025453E#011 TrendMicroDsFileSHA1=5AD084DDCD8F80FBF2EE3F0E4F812E812DEE60C1#011 TrendMicroDsFileSHA256=25F231556700749F8F0394CAABDED83C2882317669DA2C01299B45173482FA6E TrendMicroDsDetectionConfidence=95 TrendMicroDsRelevantDetectionNames=Ransom_CERBER.BZC;Ransom_CERBER.C;Ransom_CRYPNISCA.SM

CEF Extension Field	LEEF Extension Field	Name	Description	Examples
cn1	cn1	Host Identifier	The agent computer's internal unique identifier.	cn1=1
cn1Label	cn1Label	Host ID	The name label for the field cn1.	cn1Label=Host ID
cn2	cn2	File Size	The size of the quarantine file. This extension is included only when the "direct forward" from agent /appliance is selected.	cn2=100
cn2Label	cn2Label	File Size	The name label for the field cn2.	cn2Label=Quarantine File Size
cs3	cs3	Infected Resource	The path of the spyware item. This field is only for spyware detection events.	cs3=C:\test\atse_samples\SPYW_Test_Virus.exe
cs3Label	cs3Label	Infected Resource	The name label for the field cs3. This field is only for spyware detection events.	cs3Label=Infected Resource
cs4	cs4	Resource Type	Resource Type values: 10=Files and Directories 11=System Registry 12=Internet Cookies 13=Internet URL Shortcut 14=Programs in Memory 15=Program Startup Areas 16=Browser Helper Object 17=Layered Service Provider 18=Hosts File 19=Windows Policy Settings 20=Browser 23=Windows Shell Setting 24=IE Downloaded Program Files 25=Add/Remove Programs 26=Services other=Other For example, if there's a spyware file named spy.exe that creates a registry run key to keep its persistence after system reboot, there will be two items in the spyware report: the item for spy.exe has cs4=10 (Files and Directories), and the item for the run key registry has cs4=11 (System Registry). This field is only for spyware detection events.	cs4=10
cs4Label	cd4Label	Resource Type	The name label for the field cs4. This field is only for spyware detection events.	cs4Label=Resource Type
cs5	cs5	Risk Level	Risk level values: 0=Very Low 25=Low 50=Medium 75=High 100=Very High This field is only for spyware detection events.	cs5=25
cs5Label	cs5Label	Risk Level	The name label for the field cs5. This field is only for spyware detection events.	cs5Label=Risk Level
cs6	cs6	Container	The image name of the Docker container, container name, and container ID where the malware was detected.	cs6=ContainerImageName \| ContainerName \| ContainerID
cs6Label	cs6Label	Container	The name label for the field cs6.	cs6Label=Container
filePath	filePath	File Path	The location of the malware file.	filePath=C:\\Users\\Mei\\Desktop\\virus.exe
act	act	Action	The action performed by the Anti-Malware engine. Possible values are: Deny Access, Quarantine, Delete, Pass, Clean, Terminate, and Unspecified.	act=Clean act=Pass
msg	msg	Message	The type of scan. Possible values are: Realtime, Scheduled, and Manual.	msg=Realtime msg=Scheduled
dvc	dvc	Device address	The IPv4 address for cn1. Does not appear if the source is an IPv6 address or hostname. (Uses dvchost instead.)	dvc=10.1.144.199
dvchost	dvchost	Device host name	The hostname or IPv6 address for cn1. Does not appear if the source is an IPv4 address. (Uses dvc field instead.)	dvchost=www.example.com dvchost=fe80::f018:a3c6:20f9:afa6%5
TrendMicroDsTags	TrendMicroDsTags	Events tags	Deep Security event tags assigned to the event	TrendMicroDsTags=suspicious
TrendMicroDsTenant	TrendMicroDsTenant	Tenant name	Deep Security tenant	TrendMicroDsTenant=Primary
TrendMicroDsTenantId	TrendMicroDsTenantId	Tenant ID	Deep Security tenant ID	TrendMicroDsTenantId=0
TrendMicroDsMalwareTarget	TrendMicroDsMalwareTarget	Target(s)	The file, process, or registry key (if any) that the malware was trying to affect. If the malware was trying to affect more than one, this field will contain the value "Multiple." Only suspicious activity monitoring and unauthorized change monitoring have values for this field.	TrendMicroDsMalwareTarget=N/A TrendMicroDsMalwareTarget=C:\\Windows\\System32\\cmd.exe TrendMicroDsMalwareTarget=HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings TrendMicroDsMalwareTarget=Multiple
TrendMicroDsMalwareTargetType	TrendMicroDsMalwareTargetType	Target Type	The type of system resource that this malware was trying to affect, such as the file system, a process, or Windows registry. Only suspicious activity monitoring and unauthorized change monitoring have values for this field.	TrendMicroDsMalwareTargetType=N/A TrendMicroDsMalwareTargetType=Exploit TrendMicroDsMalwareTargetType=File System TrendMicroDsMalwareTargetType=Process TrendMicroDsMalwareTargetType=Registry
TrendMicroDsFileMD5	TrendMicroDsFileMD5	File MD5	The MD5 hash of the file	TrendMicroDsFileMD5=1947A1BC0982C5871FA3768CD025453E
TrendMicroDsFileSHA1	TrendMicroDsFileSHA1	File SHA1	The SHA1 hash of the file	TrendMicroDsFileSHA1=5AD084DDCD8F80FBF2EE3F0E4F812E812DEE60C1
TrendMicroDsFileSHA256	TrendMicroDsFileSHA256	File SHA256	The SHA256 hash of the file	TrendMicroDsFileSHA256=25F231556700749F8F0394CAABDED83C2882317669DA2C01299B45173482FA6E
TrendMicroDsDetectionConfidence	TrendMicroDsDetectionConfidence	Threat Probability	Indicates how closely (in %) the file matched the malware model	TrendMicroDsDetectionConfidence=95
TrendMicroDsRelevantDetectionNames	TrendMicroDsRelevantDetectionNames	Probable Threat Type	Indicates the most likely type of threat contained in the file after Predictive Machine Learning compared the analysis to other known threats(separate by semicolon";" )	TrendMicroDsRelevantDetectionNames=Ransom_CERBER.BZC;Ransom_CERBER.C;Ransom_CRYPNISCA.SM
None	sev	Severity	The severity of the event. 1 is the least severe; 10 is the most severe.	sev=6
None	cat	Category	Category	cat=Anti-Malware
None	name	Name	Event name	name=SPYWARE_KEYL_ACTIVE
None	desc	Description	Event description. Anti-Malware uses the event name as the description.	desc=SPYWARE_KEYL_ACTIVE

Application Control event format

Example CEF Log Entry: CEF: 0|Trend Micro|Deep Security Agent|10.2.229|6001200|AppControl detectOnly|6|cn1=202 cn1Label=Host ID dvc=192.168.33.128 TrendMicroDsTenant=Primary TrendMicroDsTenantId=0 fileHash=80D4AC182F97D2AB48EE4310AC51DA5974167C596D133D64A83107B9069745E0 suser=root suid=0 act=detectOnly filePath=/home/user1/Desktop/Directory1//heartbeatSync.sh fsize=20 aggregationType=0 repeatCount=1 cs1=notWhitelisted cs1Label=actionReason cs2=0CC9713BA896193A527213D9C94892D41797EB7C cs2Label=sha1 cs3=7EA8EF10BEB2E9876D4D7F7E5A46CF8D cs3Label=md5

Example LEEF Log Entry: LEEF:2.0|Trend Micro|Deep Security Agent|10.0.2883|60|cat=AppControl name=blocked desc=blocked sev=6 cn1=2 cn1Label=Host ID dvc=10.203.156.39 TrendMicroDsTenant=Primary TrendMicroDsTenantId=0 fileHash=E3B0C44298FC1C149AFBF4C8996FB92427AE41E4649B934CA495991B7852B855 suser=root suid=0 act=blocked filePath=/bin/my.jar fsize=123857 aggregationType=0 repeatCount=1 cs1=notWhitelisted cs1Label=actionReason

CEF Extension Field	LEEF Extension Field	Name	Description	Examples
cn1	cn1	Host Identifier	The agent computer's internal unique identifier.	cn1=2
cn1Label	cn1Label	Host ID	The name label for the field cn1.	cn1Label=Host ID
cs1	cs1	Reason	The reason why application control performed the specified action, such as "notWhitelisted" (the software did not have a matching rule, and application control was configured to block unrecognized software).	cs1=notWhitelisted
cs1Label	cs1Label		The name label for the field cs1.	cs1Label=actionReason
cs2	cs2		If it was calculated, the SHA-1 hash of the file.	cs2=156F4CB711FDBD668943711F853FB6DA89581AAD
cs2Label	cs2Label		The name label for the field cs2.	cs2Label=sha1
cs3	cs3		If it was calculated, the MD5 hash of the file.	cs3=4E8701AC951BC4537F8420FDAC7EFBB5
cs3Label	cs3Label		The name label for the field cs3.	cs3Label=md5
act	act	Action	The action performed by the Application Control engine. Possible values are: Blocked, Allowed.	act=blocked
dvc	dvc	Device address	The IPv4 address for cn1. Does not appear if the source is an IPv6 address or hostname. (Uses dvchost instead.)	dvc=10.1.1.10
dvchost	dvchost	Device host name	The hostname or IPv6 address for cn1. Does not appear if the source is an IPv4 address. (Uses dvc field instead.)	dvchost=www.example.com dvchost=2001:db8::5
suid	suid	User ID	The account ID number of the user name.	suid=0
suser	suser	User Name	The name of the user account that installed the software on the protected computer.	suser=root
TrendMicroDsTenant	TrendMicroDsTenant	Tenant name	Deep Security tenant name.	TrendMicroDsTenant=Primary
TrendMicroDsTenantId	TrendMicroDsTenantId	Tenant ID	Deep Security tenant ID number.	TrendMicroDsTenantId=0
fileHash	fileHash	File hash	The SHA 256 hash that identifies the software file.	fileHash=E3B0C44298FC1C149AFBF4C8996FB92427AE41E4649B934CA495991B7852B855
filePath	filePath	File Path	The location of the malware file.	filePath=/bin/my.jar
fsize	fsize	File Size	The file size in bytes.	fsize=16
aggregationType	aggregationType	Aggregation Type	An integer that indicates how the event is aggregated: 0: The event is not aggregated 1: The event is aggregated based on file name, path, and event type. 2: The event is aggregated based on event type. For information, about event aggregation, see View Application Control event logs.	aggregationType=2
repeatCount	repeatCount	Repeat Count	The number of occurrences of the event. Non-aggregated events have a value of 1. Aggregated events have a value of 2 or more.	repeatCount=4
None	sev	Severity	The severity of the event. 1 is the least severe; 10 is the most severe.	sev=6
None	cat	Category	Category	cat=AppControl
None	name	Name	Event name	name=blocked
None	desc	Description	Event description. Application Control uses the action as the description.	desc=blocked

Firewall event log format

Sample CEF Log Entry: CEF:0|Trend Micro|Deep Security Agent|<DSA version>|20|Log for TCP Port 80|0|cn1=1 cn1Label=Host ID dvc=hostname act=Log dmac=00:50:56:F5:7F:47 smac=00:0C:29:EB:35:DE TrendMicroDsFrameType=IP src=192.168.126.150 dst=72.14.204.147 out=1019 cs3=DF MF cs3Label=Fragmentation Bits proto=TCP spt=49617 dpt=80 cs2=0x00 ACK PSH cs2Label=TCP Flags cnt=1 TrendMicroDsPacketData=AFB...

Sample LEEF Log Entry: LEEF:2.0|Trend Micro|Deep Security Agent|<DSA version>|21|cat=Firewall name=Remote Domain Enforcement (Split Tunnel) desc=Remote Domain Enforcement (Split Tunnel) sev=5 cn1=37 cn1Label=Host ID dvchost=www.example.com TrendMicroDsTenant=Primary TrendMicroDsTenantId=0 act=Deny dstMAC=67:BF:1B:2F:13:EE srcMAC=78:FD:E7:07:9F:2C TrendMicroDsFrameType=IP src=10.0.110.221 dst=105.152.185.81 out=177 cs3= cs3Label=Fragmentation Bits proto=UDP srcPort=23 dstPort=445 cnt=1 TrendMicroDsPacketData=R0VUIC9zP3...

CEF Extension Field	LEEF Extension Field	Name	Description	Examples
act	act	Action		act=Log act=Deny
cn1	cn1	Host Identifier	The agent computer's internal unique identifier.	cn1=113
cn1Label	cn1Label	Host ID	The name label for the field cn1.	cn1Label=Host ID
cnt	cnt	Repeat Count	The number of times this event was sequentially repeated.	cnt=8
cs2	cs2	TCP Flags		cs2=0x10 ACK cs2=0x14 ACK RST
cs2Label	cs2Label	TCP Flags	The name label for the field cs2.	cs2Label=TCP Flags
cs3	cs3	Packet Fragmentation Information		cs3=DF cs3=MF cs3=DF MF
cs3Label	cs3Label	Fragmentation Bits	The name label for the field cs3.	cs3Label=Fragmentation Bits
cs4	cs4	ICMP Type and Code	(For the ICMP protocol only) The ICMP type and code, delimited by a space.	cs4=11 0 cs4=8 0
cs4Label	cs4Label	ICMP	The name label for the field cs4.	cs4Label=ICMP Type and Code
dmac	dstMAC	Destination MAC Address	MAC address of the destination computer's network interface.	dmac= 00:0C:29:2F:09:B3
dpt	dstPort	Destination Port	(For TCP and UDP protocol only) Port number of the destination computer's connection or session.	dpt=80 dpt=135
dst	dst	Destination IP Address	IP address of the destination computer.	dst=192.168.1.102 dst=10.30.128.2
in	in	Inbound Bytes Read	(For inbound connections only) Number of inbound bytes read.	in=137 in=21
out	out	Outbound Bytes Read	(For outbound connections only) Number of outbound bytes read.	out=216 out=13
proto	proto	Transport protocol	Name of the transport protocol used.	proto=tcp proto=udp proto=icmp
smac	srcMAC	Source MAC Address	MAC address of the source computer's network interface.	smac= 00:0E:04:2C:02:B3
spt	srcPort	Source Port	(For TCP and UDP protocol only) Port number of the source computer's connection or session.	spt=1032 spt=443
src	src	Source IP Address	The packet's source IP address at this event.	src=192.168.1.105 src=10.10.251.231
TrendMicroDsFrameType	TrendMicroDsFrameType	Ethernet frame type	Connection ethernet frame type.	TrendMicroDsFrameType=IP TrendMicroDsFrameType=ARP TrendMicroDsFrameType=RevARP TrendMicroDsFrameType=NetBEUI
TrendMicroDsPacketData	TrendMicroDsPacketData	Packet data	The packet data, represented in Base64.	TrendMicroDsPacketData=R0VUIC9zP3...
dvc	dvc	Device address	The IPv4 address for cn1. Does not appear if the source is an IPv6 address or hostname. (Uses dvchost instead.)	dvc=10.1.144.199
dvchost	dvchost	Device host name	The hostname or IPv6 address for cn1. Does not appear if the source is an IPv4 address. (Uses dvc field instead.)	dvchost=exch01.example.com dvchost=2001:db8::5
TrendMicroDsTags	TrendMicroDsTags	Event Tags	Deep Security event tags assigned to the event	TrendMicroDsTags=suspicious
TrendMicroDsTenant	TrendMicroDsTenant	Tenant Name	Deep Security tenant	TrendMicroDsTenant=Primary
TrendMicroDsTenantId	TrendMicroDsTenantId	Tenant ID	Deep Security tenant ID	TrendMicroDsTenantId=0
None	sev	Severity	The severity of the event. 1 is the least severe; 10 is the most severe.	sev=5
None	cat	Category	Category	cat=Firewall
None	name	Name	Event name	name=Remote Domain Enforcement (Split Tunnel)
None	desc	Description	Event description. Firewall events use the event name as the description.	desc=Remote Domain Enforcement (Split Tunnel)

Integrity Monitoring log event format

Sample LEEF Log Entry: LEEF:2.0|Trend Micro|Deep Security Agent|<DSA version>|2002779|cat=Integrity Monitor name=Microsoft Windows - System file modified desc=Microsoft Windows - System file modified sev=8 cn1=37 cn1Label=Host ID dvchost=www.example.com TrendMicroDsTenant=Primary TrendMicroDsTenantId=0 act=updated suser=admin

CEF Extension Field	LEEF Extension Field	Name	Description	Examples
act	act	Action	The action detected by the integrity rule. Can contain: created, updated, deleted or renamed.	act=created act=deleted
cn1	cn1	Host Identifier	The agent computer's internal unique identifier.	cn1=113
cn1Label	cn1Label	Host ID	The name label for the field cn1.	cn1Label=Host ID
filePath	filePath	Target Entity	The integrity rule target entity. May contain a file or directory path, registry key, etc.	filePath=C:\WINDOWS\system32\drivers\etc\hosts
suser	suser	Source User	Account of the user who changed the file being monitored.	suser=WIN-038M7CQDHIN\Administrator
msg	msg	Attribute changes	(For "renamed" action only) A list of changed attribute names. If "Relay via Manager" is selected, all event action types include a full description.	msg=lastModified,sha1,size
oldfilePath	oldfilePath	Old target entity	(For "renamed" action only) The previous integrity rule target entity to capture the rename action from the previous target entity to the new, which is recorded in the filePath field.	oldFilePath=C:\WINDOWS\system32\logfiles\ds_agent.log
dvc	dvc	Device address	The IPv4 address for cn1. Does not appear if the source is an IPv6 address or hostname. (Uses dvchost instead.)	dvc=10.1.144.199
dvchost	dvchost	Device host name	The hostname or IPv6 address for cn1. Does not appear if the source is an IPv4 address. (Uses dvc field instead.)	dvchost=www.example.com dvchost=2001:db8::5
TrendMicroDsTags	TrendMicroDsTags	Events tags	Deep Security event tags assigned to the event	TrendMicroDsTags=suspicious
TrendMicroDsTenant	TrendMicroDsTenant	Tenant name	Deep Security tenant	TrendMicroDsTenant=Primary
TrendMicroDsTenantId	TrendMicroDsTenantId	Tenant ID	Deep Security tenant ID	TrendMicroDsTenantId=0
None	sev	Severity	The severity of the event. 1 is the least severe; 10 is the most severe.	sev=8
None	cat	Category	Category	cat=Integrity Monitor
None	name	Name	Event name	name=Microsoft Windows - System file modified
None	desc	Description	Event description. Integrity Monitoring uses the event name as the description.	desc=Microsoft Windows - System file modified

Intrusion Prevention event log format

Sample CEF Log Entry: CEF:0|Trend Micro|Deep Security Agent|<DSA version>|1001111|Test Intrusion Prevention Rule|3|cn1=1 cn1Label=Host ID dvchost=hostname dmac=00:50:56:F5:7F:47 smac=00:0C:29:EB:35:DE TrendMicroDsFrameType=IP src=192.168.126.150 dst=72.14.204.105 out=1093 cs3=DF MF cs3Label=Fragmentation Bits proto=TCP spt=49786 dpt=80 cs2=0x00 ACK PSH cs2Label=TCP Flags cnt=1 act=IDS:Reset cn3=10 cn3Label=Intrusion Prevention Packet Position cs5=10 cs5Label=Intrusion Prevention Stream Position cs6=8 cs6Label=Intrusion Prevention Flags TrendMicroDsPacketData=R0VUIC9zP3...

Sample LEEF Log Entry: LEEF:2.0|Trend Micro|Deep Security Agent|<DSA version>|1000940|cat=Intrusion Prevention name=Sun Java RunTime Environment Multiple Buffer Overflow Vulnerabilities desc=Sun Java RunTime Environment Multiple Buffer Overflow Vulnerabilities sev=10 cn1=6 cn1Label=Host ID dvchost=exch01 TrendMicroDsTenant=Primary TrendMicroDsTenantId=0 dstMAC=55:C0:A8:55:FF:41 srcMAC=CA:36:42:B1:78:3D TrendMicroDsFrameType=IP src=10.0.251.84 dst=56.19.41.128 out=166 cs3= cs3Label=Fragmentation Bits proto=ICMP srcPort=0 dstPort=0 cnt=1 act=IDS:Reset cn3=0 cn3Label=DPI Packet Position cs5=0 cs5Label=DPI Stream Position cs6=0 cs6Label=DPI Flags TrendMicroDsPacketData=AFB...

CEF Extension Field	LEEF Extension Field	Name	Description	Examples
act	act	Action	(IPS rules written before Deep Security version 7.5 SP1 could additionally perform Insert, Replace, and Delete actions. These actions are no longer performed. If an older IPS Rule is triggered which still attempts to perform those actions, the event will indicate that the rule was applied in detect-only mode.)	act=Block
cn1	cn1	Host Identifier	The agent computer's internal unique identifier.	cn1=113
cn1Label	cn1Label	Host ID	The name label for the field cn1.	cn1Label=Host ID
cn3	cn3	Intrusion Prevention Packet Position	Position within packet of data that triggered the event.	cn3=37
cn3Label	cn3Label	Intrusion Prevention Packet Position	The name label for the field cn3.	cn3Label=Intrusion Prevention Packet Position
cnt	cnt	Repeat Count	The number of times this event was sequentially repeated.	cnt=8
cs1	cs1	Intrusion Prevention Filter Note	(Optional) A note field which can contain a short binary or text note associated with the payload file. If the value of the note field is all printable ASCII characters, it will be logged as text with spaces converted to underscores. If it contains binary data, it will be logged using Base-64 encoding.	cs1=Drop_data
cs1Label	cs1Label	Intrusion Prevention Note	The name label for the field cs1.	cs1Label=Intrusion Prevention Note
cs2	cs2	TCP Flags	(For the TCP protocol only) The raw TCP flag byte followed by the URG, ACK, PSH, RST, SYN and FIN fields may be present if the TCP header was set.	cs2=0x10 ACK cs2=0x14 ACK RST
cs2Label	cs2Label	TCP Flags	The name label for the field cs2.	cs2Label=TCP Flags
cs3	cs3	Packet Fragmentation Information		cs3=DF cs3=MF cs3=DF MF
cs3Label	cs3Label	Fragmentation Bits	The name label for the field cs3.	cs3Label=Fragmentation Bits
cs4	cs4	ICMP Type and Code	(For the ICMP protocol only) The ICMP type and code stored in their respective order delimited by a space.	cs4=11 0 cs4=8 0
cs4Label	cs4Label	ICMP	The name label for the field cs4.	cs4Label=ICMP Type and Code
cs5	cs5	Intrusion Prevention Stream Position	Position within stream of data that triggered the event.	cs5=128 cs5=20
cs5Label	cs5Label	Intrusion Prevention Stream Position	The name label for the field cs5.	cs5Label=Intrusion Prevention Stream Position
cs6	cs6	Intrusion Prevention Filter Flags	A combined value that includes the sum of the flag values: 1 - Data truncated - Data could not be logged. 2 - Log Overflow - Log overflowed after this log. 4 - Suppressed - Logs threshold suppressed after this log. 8 - Have Data - Contains packet data 16 - Reference Data - References previously logged data.	The following example would be a summed combination of 1 (Data truncated) and 8 (Have Data): cs6=9
cs6Label	cs6Label	Intrusion Prevention Flags	The name label for the field cs6.	cs6=Intrusion Prevention Filter Flags
dmac	dstMAC	Destination MAC Address	Destination computer network interface MAC address.	dmac= 00:0C:29:2F:09:B3
dpt	dstPort	Destination Port	(For TCP and UDP protocol only) Destination computer connection port.	dpt=80 dpt=135
dst	dst	Destination IP Address	Destination computer IP Address.	dst=192.168.1.102 dst=10.30.128.2
in	in	Inbound Bytes Read	(For inbound connections only) Number of inbound bytes read.	in=137 in=21
out	out	Outbound Bytes Read	(For outbound connections only) Number of outbound bytes read.	out=216 out=13
proto	proto	Transport protocol	Name of the connection transport protocol used.	proto=tcp proto=udp proto=icmp
smac	srcMAC	Source MAC Address	Source computer network interface MAC address.	smac= 00:0E:04:2C:02:B3
spt	srcPort	Source Port	(For TCP and UDP protocol only) Source computer connection port.	spt=1032 spt=443
src	src	Source IP Address	Source computer IP Address. This is the IP of the last proxy server, if it exists, or the client IP. See also the xff field.	src=192.168.1.105 src=10.10.251.231
TrendMicroDsFrameType	TrendMicroDsFrameType	Ethernet frame type	Connection ethernet frame type.	TrendMicroDsFrameType=IP TrendMicroDsFrameType=ARP TrendMicroDsFrameType=RevARP TrendMicroDsFrameType=NetBEUI
TrendMicroDsPacketData	TrendMicroDsPacketData	Packet data	The packet data, represented in Base64.	TrendMicroDsPacketData=AFB...
dvc	dvc	Device address	The IPv4 address for cn1. Does not appear if the source is an IPv6 address or hostname. (Uses dvchost instead.)	dvc=10.1.144.199
dvchost	dvchost	Device host name	The hostname or IPv6 address for cn1. Does not appear if the source is an IPv4 address. (Uses dvc field instead.)	dvchost=www.example.com dvchost=2001:db8::5
TrendMicroDsTags	TrendMicroDsTags	Event tags	Deep Security event tags assigned to the event	TrendMicroDsTags=Suspicious
TrendMicroDsTenant	TrendMicroDsTenant	Tenant name	Deep Security tenant name	TrendMicroDsTenant=Primary
TrendMicroDsTenantId	TrendMicroDsTenantId	Tenant ID	Deep Security tenant ID	TrendMicroDsTenantId=0
None	sev	Severity	The severity of the event. 1 is the least severe; 10 is the most severe.	sev=10
None	cat	Category	Category	cat=Intrusion Prevention
None	name	Name	Event name	name=Sun Java RunTime Environment Multiple Buffer Overflow Vulnerabilities
None	desc	Description	Event description. Intrusion Prevention events use the event name as the description.	desc=Sun Java RunTime Environment Multiple Buffer Overflow Vulnerabilities

Log Inspection event format

Sample CEF Log Entry: CEF:0|Trend Micro|Deep Security Agent|<DSA version>|3002795|Microsoft Windows Events|8|cn1=1 cn1Label=Host ID dvchost=hostname cs1Label=LI Description cs1=Multiple Windows Logon Failures fname=Security src=127.0.0.1 duser=(no user) shost=WIN-RM6HM42G65V msg=WinEvtLog Security: AUDIT_FAILURE(4625): Microsoft-Windows-Security-Auditing: (no user): no domain: WIN-RM6HM42G65V: An account failed to log on. Subject: ..

Sample LEEF Log Entry: LEEF:2.0|Trend Micro|Deep Security Agent|<DSA version>|3003486|cat=Log Inspection name=Mail Server - MDaemon desc=Server Shutdown. sev=3 cn1=37 cn1Label=Host ID dvchost=exch01.example.com TrendMicroDsTenant=Primary TrendMicroDsTenantId=0 cs1=Server Shutdown. cs1Label=LI Description fname= shost= msg=

CEF Extension Field	LEEF Extension Field	Name	Description	Examples
cn1	cn1	Host Identifier	The agent computer's internal unique identifier.	cn1=113
cn1Label	cn1Label	Host ID	The name label for the field cn1.	cn1Label=Host ID
cs1	cs1	Specific Sub-Rule	The Log Inspection sub-rule which triggered this event.	cs1=Multiple Windows audit failure events
cs1Label	cs1Label	LI Description	The name label for the field cs1.	cs1Label=LI Description
duser	duser	User Information	(If parse-able username exists) The name of the target user initiated the log entry.	duser=(no user) duser=NETWORK SERVICE
fname	fname	Target entity	The Log Inspection rule target entity. May contain a file or directory path, registry key, etc.	fname=Application fname=C:\Program Files\CMS\logs\server0.log
msg	msg	Details	Details of the Log Inspection event. May contain a verbose description of the detected log event.	msg=WinEvtLog: Application: AUDIT_FAILURE(20187): pgEvent: (no user): no domain: SERVER01: Remote login failure for user 'xyz'
shost	shost	Source Hostname	Source computer hostname.	shost=webserver01.corp.com
src	src	Source IP Address	Source computer IP address.	src=192.168.1.105 src=10.10.251.231
dvc	dvc	Device address	The IPv4 address for cn1. Does not appear if the source is an IPv6 address or hostname. (Uses dvchost instead.)	dvc=10.1.144.199
dvchost	dvchost	Device host name	The hostname or IPv6 address for cn1. Does not appear if the source is an IPv4 address. (Uses dvc field instead.)	dvchost=www.example.com dvchost=2001:db8::5
TrendMicroDsTags	TrendMicroDsTags	Events tags	Deep Security event tags assigned to the event	TrendMicroDsTags=suspicious
TrendMicroDsTenant	TrendMicroDsTenant	Tenant name	Deep Security tenant	TrendMicroDsTenant=Primary
TrendMicroDsTenantId	TrendMicroDsTenantId	Tenant ID	Deep Security tenant ID	TrendMicroDsTenantId=0
None	sev	Severity	The severity of the event. 1 is the least severe; 10 is the most severe.	sev=3
None	cat	Category	Category	cat=Log Inspection
None	name	Name	Event name	name=Mail Server - MDaemon
None	desc	Description	Event description.	desc=Server Shutdown

Web Reputation event format

Sample LEEF Log Entry: LEEF:2.0|Trend Micro|Deep Security Agent|<DSA version>|5000000|cat=Web Reputation name=WebReputation desc=WebReputation sev=6 cn1=3 cn1Label=Host ID dvchost=exch01.example.com TrendMicroDsTenant=Primary TrendMicroDsTenantId=0 request=http://yw.olx5x9ny.org.it/HvuauRH/eighgSS.htm msg=Suspicious

CEF Extension Field	LEEF Extension Field	Name	Description	Examples
cn1	cn1	Host Identifier	The agent computer's internal unique identifier.	cn1=1
cn1Label	cn1Label	Host ID	The name label for the field cn1.	cn1Label=Host ID
request	request	Request	The URL of the request.	request=http://www.example.com/index.php
msg	msg	Message	The type of action. Possible values are: Realtime, Scheduled, and Manual.	msg=Realtime msg=Scheduled
dvc	dvc	Device address	The IPv4 address for cn1. Does not appear if the source is an IPv6 address or hostname. (Uses dvchost instead.)	dvc=10.1.144.199
dvchost	dvchost	Device host name	The hostname or IPv6 address for cn1. Does not appear if the source is an IPv4 address. (Uses dvc field instead.)	dvchost=www.example.com dvchost=2001:db8::5
TrendMicroDsTags	TrendMicroDsTags	Events tags	Deep Security event tags assigned to the event	TrendMicroDsTags=suspicious
TrendMicroDsTenant	TrendMicroDsTenant	Tenant name	Deep Security tenant	TrendMicroDsTenant=Primary
TrendMicroDsTenantId	TrendMicroDsTenantId	Tenant ID	Deep Security tenant ID	TrendMicroDsTenantId=0
None	sev	Severity	The severity of the event. 1 is the least severe; 10 is the most severe.	sev=6
None	cat	Category	Category	cat=Web Reputation
None	name	Name	Event name	name=WebReputation
None	desc	Description	Event description. Web Reputation uses the event name as the description.	desc=WebReputation

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