CNC Callback and Suspicious Connection Log Message (Part-2)

Vendor Documentation

https://docs.trendmicro.com/en-us/enterprise/apex-central-online-help/appendices/syslog-mapping-cef.aspx

https://docs.trendmicro.com/en-us/enterprise/apex-central-online-help/appendices/syslog-mapping-cef/cef-network-content-.aspx

Log Fields and Parsing

This section details the log fields available in this log message type, along with values parsed for both LogRhythm Default and LogRhythm Default v2.0 policies. A value of "N/A" (not applicable) means that there is no value parsed for a specified log field.

Log Field	LogRhythm Default	LogRhythm Default v2.0
N/A	<severity>	N/A
Header (logVer)	N/A	N/A
Header (vendor)	N/A	N/A
Header (pname)	N/A	N/A
Header (pver)	<version>	N/A
Header (eventid)	<vendorinfo>	<vmid>
Header (eventName)	<threatname>	N/A
Header (severity)	<severity>	<severity>
deviceExternalId	N/A	N/A
rt	N/A	N/A
cat	<processid>	N/A
deviceFacility	N/A	N/A
deviceProcessName	N/A	<process>
act	<action>	<action> <tag1>
src	<sip>	<sip>
c6a2Label	N/A	N/A
c6a2	N/A	N/A
dst	<dip>	<dip>
c6a3Label	N/A	N/A
c6a3	N/A	N/A
spt	<sport>	<sport>
dpt	<dport>	<dport>
deviceDirection	N/A	N/A
cn1Label	<policy>	N/A
cn1	N/A	N/A
cs2Label	<threatname>	N/A
cs2	<cve>	<threatname>
reason	<reason>	<reason>
deviceNtDomain	<domainorigin>	N/A
dntdom	N/A	N/A
dvchost	<dname>	N/A
TMCMLogDetectedHost	N/A	N/A
TMCMLogDetectedIP	N/A	N/A
ApexCentralHost	N/A	N/A
devicePayloadId	N/A	N/A
shost	<sname>	N/A

Log Processing Settings

This section details log processing changes made from the LogRhythm Default policy to LogRhythm Default v2.0. In some cases, base rules are broken down into sub rules to appropriately parse log message types by their event types.

LogRhythm Default

Regex ID	Rule Name	Rule Type	Classification	Common Event
1011519	CNC Callback And Suspicious Connection Log Message	Base Rule	Suspicious	Suspicious Activity

LogRhythm Default v2.0

Regex ID	Rule Name	Rule Type	Classification	Common Event
1012143	V 2.0 : Network Content Inspection Event	Base Rule	Activity	General Activity
	V 2.0 : Network Content Inspection : Unknown	Sub Rule	Activity	General Activity
	V 2.0 : Network Content Inspection : Pass	Sub Rule	Activity	Web Activity Allowed
	V 2.0 : Network Content Inspection : Block	Sub Rule	Failed Activity	General Failed Activity
	V 2.0 : Network Content Inspection : Monitor	Sub Rule	Activity	General Activity
	V 2.0 : Network Content Inspection : Delete	Sub Rule	Failed Activity	General Failed Activity
	V 2.0 : Network Content Inspection : Quarantine	Sub Rule	Activity	Quarantine
	V 2.0 : Network Content Inspection : Warn	Sub Rule	Activity	General Activity
	V 2.0 : Network Content Inspection:Warn & Continue	Sub Rule	Activity	Web Activity Allowed
	V 2.0 : Network Content Inspection : Override	Sub Rule	Activity	Web Activity Allowed