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 |
