Event ID 4729 — A member was removed from a security-enabled global group.
Description
A member was removed from a security-enabled global group.
Message #
Fields #
| Name | Description |
|---|---|
Account_Name | [Member] Account Name. |
Security_ID | [Member] Security ID. |
Group_Name | [Group] Group Name. |
Group_Domain | [Group] Group Domain. |
Security_ID | [Group] Security ID. |
Security_ID | [Subject] Security ID. |
Account_Name | [Subject] Account Name. |
Account_Domain | [Subject] Account Domain. |
Logon_ID | [Subject] Logon ID. |
Privileges | [Additional Information] Privileges. Privilege constants reference |
Example Event #
{
"system": {
"provider": "Microsoft-Windows-Security-Auditing",
"guid": "54849625-5478-4994-A5BA-3E3B0328C30D",
"event_source_name": "",
"event_id": 4729,
"version": 0,
"level": 0,
"task": 13826,
"opcode": 0,
"keywords": 9232379236109516800,
"time_created": "2022-01-24T17:03:25.009874Z",
"event_record_id": 1934525,
"correlation": {},
"execution": {
"process_id": 480,
"thread_id": 1496
},
"channel": "Security",
"computer": "fs03vuln.offsec.lan",
"security": {
"user_id": ""
}
},
"event_data": {
"MemberName": "-",
"MemberSid": "S-1-5-21-2721507831-1374043488-2540227515-1008",
"TargetUserName": "None",
"TargetDomainName": "FS03VULN",
"TargetSid": "S-1-5-21-2721507831-1374043488-2540227515-513",
"SubjectUserSid": "S-1-5-21-4230534742-2542757381-3142984815-1111",
"SubjectUserName": "admmig",
"SubjectDomainName": "OFFSEC",
"SubjectLogonId": "0x14f509e2",
"PrivilegeList": "-"
}
}
Detection Patterns #
Persistence: Account Manipulation
Community Notes #
A member was removed from a security-enabled global group, may be an effort to slow IR or clean-up after escalation. Security-enabled local group changed, indicates changes to local Administrators or Remote Desktop Users.
References #
- Microsoft Learn https://learn.microsoft.com/en-us/windows/security/threat-protection/auditing/event-4729
- Microsoft Learn Audit Policy https://learn.microsoft.com/en-us/windows/security/threat-protection/auditing/audit-security-group-management
- Ultimate Windows Security https://www.ultimatewindowssecurity.com/securitylog/encyclopedia/event.aspx?eventid=4729
- Example event sourced from https://github.com/Yamato-Security/hayabusa-sample-evtx