{
  "id": "4729",
  "source": "windows_security",
  "priority": "P3",
  "applicable_version": "Windows Server 2008 and later where the audit subcategory is enabled",
  "last_reviewed": "2026-07-13",
  "category": "AccountManagement",
  "name": "A member was removed from a security-enabled global group",
  "definition": "Windows Security Event ID 4729 records removal of a member from a security-enabled global group.",
  "trigger_scenarios": "Microsoft documents 4729 as the global-group counterpart to 4733, with the same fields and recommendations except group type.",
  "key_fields": [
    {
      "field": "Member Security ID / Account Name",
      "explanation": "The user, group, or computer removed from the global security group."
    },
    {
      "field": "Group Name / Group Domain / Group Security ID",
      "explanation": "The affected global group. Privileged groups such as Domain Admins require immediate validation."
    },
    {
      "field": "Subject Account Name / Logon ID",
      "explanation": "The actor and hexadecimal logon session that performed the removal."
    }
  ],
  "false_positives": [
    "Privileged access reviews and role cleanup legitimately remove members from groups.",
    "Automated identity governance can remove expired group memberships."
  ],
  "related_event_ids": [
    "4728",
    "4735",
    "4624"
  ],
  "attck_mapping": [
    {
      "technique_id": "T1098",
      "technique_name": "Account Manipulation"
    }
  ],
  "detection_notes": "Use threshold=1 for removals from privileged global groups such as Domain Admins, Enterprise Admins, or custom Tier 0 groups. Microsoft documents 4729 as the removal counterpart to 4728/4733; if Member Security ID is removed shortly after suspicious access, the actor may be hiding or changing persistence, which maps to T1098 Account Manipulation. Correlate Subject Logon ID with 4624/4688 and verify the identity-governance ticket.",
  "kql_snippet": "SecurityEvent\n| where EventID == 4729\n| project TimeGenerated, Computer, Account, MemberName, GroupName, GroupDomain",
  "spl_snippet": "index=wineventlog EventCode=4729 | table _time, host, Account_Name, Member_Account_Name, Group_Name, Group_Domain",
  "sample_log": "EventID: 4729\nSubject Account Name: admin.ops\nSubject Logon ID: 0x27a79\nMember Security ID: S-1-5-21-111-222-333-1109\nMember Account Name: CN=svc-old,CN=Users,DC=corp,DC=local\nGroup Name: Domain Admins\nGroup Domain: CORP",
  "source_url": "https://learn.microsoft.com/en-us/previous-versions/windows/it-pro/windows-10/security/threat-protection/auditing/audit-security-group-management",
  "route": "/windows-events/4729/",
  "canonical_url": "https://soceventlookup.com/windows-events/4729/",
  "json_url": "/api/events/windows-security/4729.json"
}