EVID 4717, 4718 : User Right Assignment (Part 2) (Security)

Event Details

Event Type	Audit Authentication Policy Change
Event Description	4670(S) : Permissions on an object were changed. 4706(S) : A new trust was created to a domain. 4707(S) : A trust to a domain was removed. 4716(S) : Trusted domain information was modified. 4713(S) : Kerberos policy was changed. 4717(S) : System security access was granted to an account. 4718(S) : System security access was removed from an account. 4739(S) : Domain Policy was changed. 4864(S) : A namespace collision was detected. 4865(S) : A trusted forest information entry was added. 4866(S) : A trusted forest information entry was removed. 4867(S) : A trusted forest information entry was modified.
Event IDs	4717, 4718

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
Provider	N/A	N/A
EventID	<vmid>	<vmid>
Version	N/A	N/A
Level	<severity>	<severity>
Task	N/A	<vendorinfo>
Opcode	N/A	N/A
Keywords	<tag1>	<result>
TimeCreated	N/A	N/A
EventRecordID	N/A	N/A
Correlation	N/A	N/A
Execution	<processid>	N/A
Channel	N/A	N/A
Computer	<dname>	<dname>
Event Data	<vendorinfo>, <subject>	N/A
SubjectUserSid	<objectname>	N/A
SubjectUserName	<login>	<login>
SubjectDomainName	<domain>	<domainorigin>
SubjectLogonId	<session>	<session>
TargetSid	<account>	N/A
PrivilegeList	<object>	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	Common Event	Classification
1000628	User Right Assignment	Base Rule	Privilege Granted	Access Granted
	EVID 4704 : User Right Assigned	Sub Rule	Privilege Granted	Access Granted
	EVID 4705 : User Right Removed	Sub Rule	User Account Attribute Modified	Account Modified
	EVID 4717 : System Security Access Granted	Sub Rule	Access Granted Activity	Access Granted
	EVID 4718 : System Security Access Removed	Sub Rule	Access Revoked Activity	Access Revoked

LogRhythm Default v2.0

Regex ID	Rule Name	Rule Type	Common Event	Classification
1011105	V 2.0 : System Security Access Modification	Base Rule	Privilege Modified	Other Audit
	V 2.0 : EVID 4717 : System Security Access Granted	Sub Rule	Privilege Granted	Access Granted
	V 2.0 : EVID 4718 : System Security Access Removed	Sub Rule	Privilege Revoked	Access Revoked