A directory service object was modified
An Active Directory object attribute (`LDAP Display Name`, `Value`) was modified.
Event ID 5136 provides granular auditing of attribute modifications inside Active Directory (`LDAP Display Name` changed, `Operation Type: Value Added / Value Deleted`). It tracks sensitive changes such as adding `servicePrincipalName`, modifying `userAccountControl`, altering `msDS-AllowedToDelegateTo` (Kerberos delegation), or changing `sIDHistory` (`SID history injection`).
Failure Reason / Root Cause:
Administrative AD management, or attacker injecting `sIDHistory` / configuring RBCD (`Resource-Based Constrained Delegation`) for domain privilege escalation.
Raw Event XML snippet
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
<System>
<Provider Name="Microsoft-Windows-Security-Auditing" Guid="{54849625-5478-4994-A5BA-3E3B0328C30D}" />
<EventID>5136</EventID>
<Version>0</Version>
<Level>0</Level>
<Task>12544</Task>
<Opcode>0</Opcode>
<Keywords>0x8020000000000000</Keywords>
<TimeCreated SystemTime="2026-07-17T09:54:44.929Z" />
<EventRecordID>1048576</EventRecordID>
<Correlation />
<Execution ProcessID="612" ThreadID="1024" />
<Channel>Security</Channel>
<Computer>DC01.enterprise.internal</Computer>
<Security />
</System>
<EventData>
<Data Name="SubjectUserSid">S-1-5-18</Data>
<Data Name="SubjectUserName">SYSTEM</Data>
<Data Name="SubjectDomainName">NT AUTHORITY</Data>
<Data Name="SubjectLogonId">0x3e7</Data>
<!-- Event telemetry fields specific to A directory service object was modified -->
</EventData>
</Event>MITRE ATT&CK mapping
| ID | Technique | Tactic |
|---|---|---|
T1098.005 | Account Manipulation: SID-History Injection | Persistence |
T1552 | Unsecured Credentials | Credential Access |
Recommended actions
- Monitor Event 5136 where `LDAP Display Name` equals `sIDHistory` (`detect SID History injection persistence`).
- Audit any additions (`Value Added`) to `msDS-AllowedToActOnBehalfOfOtherIdentity` (`RBCD takeover attacks`).