EVID 4728...4762 : Group Member Added/Removed (Security)

Event Details

Event Type	Audit Security Group Management
Event Description	4731(S) : A security-enabled local group was created. 4732(S) : A member was added to a security-enabled local group. 4733(S) : A member was removed from a security-enabled local group. 4734(S) : A security-enabled local group was deleted. 4735(S) : A security-enabled local group was changed. 4764(S) : A group’s type was changed. 4799(S) : A security-enabled local group membership was enumerated.
Event IDs	4731, 4732, 4733, 4734, 4735, 4764, 4799

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>
GroupTypeChange	N/A	<action>
MemberName	N/A	<account>
MemberSid	<account>	N/A
TargetUserName	<group>	<group>
TargetDomainName	<domain>	<domainimpacted>
TargetSid	N/A	N/A
SubjectUserSid	N/A	N/A
SubjectUserName	<login>, <tag2>	<login>
SubjectDomainName	N/A	<domainorigin>
SubjectLogonId	<session>	<session>
PrivilegeList	N/A	N/A
CallerProcessId	N/A	<processid>
CallerProcessName	N/A	<process>
EventData	<vendorinfo>	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
1000635	Group Member Added/Removed	Base Rule	Account Added To Group	Access Granted
	EVID 4728 : User Added Glbl Security Grp	Sub Rule	Account Added To Group	Access Granted
	EVID 4729 : User Removed From Global Sec Grp	Sub Rule	Account Removed From Group	Access Revoked
	EVID 4732 : User Added To Local Sec Grp	Sub Rule	Account Added To Group	Access Granted
	EVID 4733 : User Removed From Local Sec Grp	Sub Rule	Account Removed From Group	Access Revoked
	EVID 4746 : User Added To Local Dstr Grp	Sub Rule	Account Added To Group	Access Granted
	EVID 4747 : User Removed From Local Dstr Grp	Sub Rule	Account Removed From Group	Access Revoked
	EVID 4751 : User Added To Global Dstr Grp	Sub Rule	Account Added To Group	Access Granted
	EVID 4761 : User Added To Universal Dstr Grp	Sub Rule	Account Added To Group	Access Granted
	EVID 4752 : User Removed From Global Dstr Grp	Sub Rule	Account Removed From Group	Access Revoked
	EVID 4756 : User Added To Univ Sec Grp	Sub Rule	Account Added To Group	Access Granted
	EVID 4757 : User Removed From Univ Sec Grp	Sub Rule	Account Removed From Group	Access Revoked
	EVID 4762 : User Removed From Univ Dstr Grp	Sub Rule	Account Removed From Group	Access Revoked

LogRhythm Default v2.0

Regex ID	Rule Name	Rule Type	Common Event	Classification
1011139	V 2.0 : Group Management Events	Base Rule	Group Information	Information
	V 2.0 : EVID 4727 : Sec-Enable Global Group Create	Sub Rule	Group Created	Account Created
	V 2.0 : EVID 4728 : Memb Add To Sec-Enable Global	Sub Rule	Account Added To Group	Access Granted
	V 2.0 : EVID 4729 : Memb Remove From Sec-Enabled	Sub Rule	Account Removed From Group	Access Revoked
	V 2.0 : EVID 4730 : Sec-Enable Global Group Delete	Sub Rule	Group Deleted	Account Deleted
	V 2.0 : EVID 4731 : Sec-Enabled Local Group Create	Sub Rule	Group Created	Account Created
	V 2.0 : EVID 4732 : Memb Add To Sec-Enable Local	Sub Rule	Account Added To Group	Access Granted
	V 2.0 : EVID 4733 : Memb Remove From Sec-Enabled	Sub Rule	Account Removed From Group	Access Revoked
	V 2.0 : EVID 4734 : Sec-Enable Local Group Delete	Sub Rule	Group Deleted	Account Deleted
	V 2.0 : EVID 4735 : Sec-Enable Local Group Modifi	Sub Rule	Group Attribute Modified	Account Modified
	V 2.0 : EVID 4737 : Sec-Enable Global Group Modifi	Sub Rule	Group Attribute Modified	Account Modified
	V 2.0 : EVID 4744 : Sec-Disable Local Group Create	Sub Rule	Group Created	Account Created
	V 2.0 : EVID 4745 : Sec-Disable Local Group Modifi	Sub Rule	Group Attribute Modified	Account Modified
	V 2.0 : EVID 4746 : Memb Add To Sec-Disable Local	Sub Rule	Account Added To Group	Access Granted
	V 2.0 : EVID 4747 : Memb Remove From Sec-Disable	Sub Rule	Account Removed From Group	Access Revoked
	V 2.0 : EVID 4748 : Sec-Disable Local Group Delete	Sub Rule	Group Deleted	Account Deleted
	V 2.0 : EVID 4749 : Sec-Disabl Global Group Create	Sub Rule	Group Created	Account Created
	V 2.0 : EVID 4750 : Sec-Disable Global Group Modif	Sub Rule	Group Attribute Modified	Account Modified
	V 2.0 : EVID 4751 : Memb Add To Sec-Disable Global	Sub Rule	Account Added To Group	Access Granted
	V 2.0 : EVID 4752 : Memb Remove From Sec-Disabled	Sub Rule	Account Removed From Group	Access Revoked
	V 2.0 : EVID 4753 : Sec-Disable Global Group Delet	Sub Rule	Group Deleted	Account Deleted
	V 2.0 : EVID 4754 : Sec-Enabled Univ Group Create	Sub Rule	Group Created	Account Created
	V 2.0 : EVID 4755 : Sec-Enable Univer Group Modifi	Sub Rule	Group Attribute Modified	Account Modified
	V 2.0 : EVID 4756 : Memb Add To Sec-Enable Univer	Sub Rule	Account Added To Group	Access Granted
	V 2.0 : EVID 4757 : Memb Remove From Sec-Enabled	Sub Rule	Account Removed From Group	Access Revoked
	V 2.0 : EVID 4758 : Sec-Enable Global Unive Delete	Sub Rule	Group Deleted	Account Deleted
	V 2.0 : EVID 4759 : Sec-Disable Unive Group Create	Sub Rule	Group Created	Account Created
	V 2.0 : EVID 4760 : Sec-Disable Unive Group Modifi	Sub Rule	Group Attribute Modified	Account Modified
	V 2.0 : EVID 4761 : Memb Add To Sec-Disable Univer	Sub Rule	Account Added To Group	Access Granted
	V 2.0 : EVID 4762 : Memb Remove From Sec-Disable	Sub Rule	Account Removed From Group	Access Revoked
	V 2.0 : EVID 4763 : Sec-Disable Global Univ Delete	Sub Rule	Group Deleted	Account Deleted
	V 2.0 : EVID 4764 : Group Type Changed	Sub Rule	Group Attribute Modified	Account Modified
	V 2.0 : EVID 4799 : Sec-Enable Local Group Members	Sub Rule	Object Read	Access Success