Special privileges assigned to new logon
Special privileges assigned to new logon. Indicates that an account logged on with administrative or high-level system privileges.
Event ID 4672 is generated immediately alongside Event ID 4624 whenever the logging-on user holds sensitive security privileges such as `SeBackupPrivilege`, `SeDebugPrivilege`, `SeTcbPrivilege`, or `SeImpersonatePrivilege` (commonly assigned to local Administrators and `SYSTEM`). It is the definitive indicator of administrative or elevated logon sessions.
Failure Reason / Root Cause:
Administrator interactive/network logon, service execution with `LocalSystem` or `NetworkService` rights, or attacker credential exploitation.
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>4672</EventID>
<Version>0</Version>
<Level>0</Level>
<Task>12544</Task>
<Opcode>0</Opcode>
<Keywords>0x8020000000000000</Keywords>
<TimeCreated SystemTime="2026-07-17T09:54:44.874Z" />
<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 Special privileges assigned to new logon -->
</EventData>
</Event>MITRE ATT&CK mapping
| ID | Technique | Tactic |
|---|---|---|
T1134 | Access Token Manipulation | Privilege Escalation |
Recommended actions
- Correlate Event ID 4672 with Event ID 4624 (`Logon ID` match) to identify exactly which external IP and account achieved admin status.
- Hunt for unexpected `SeDebugPrivilege` or `SeImpersonatePrivilege` assignments to non-system or non-admin user accounts.
- Review automated service logons (`SYSTEM`, `Network Service`) to ensure they do not originate from interactive remote sessions.