A privileged service was called

// EVENT DEFINITION:

A process requested and exercised a sensitive privilege (e.g., `SeBackupPrivilege`, `SeTcbPrivilege`).

// DETAILED TELEMETRY & CONTEXT:

Event ID 4673 records when specific high-impact privileges (`SeBackupPrivilege`, `SeRestorePrivilege`, `SeSecurityPrivilege`, `SeTakeOwnershipPrivilege`) are exercised by a running process. For example, exercising `SeBackupPrivilege` enables reading any file on the system regardless of NTFS permissions, commonly used to exfiltrate `NTDS.dit`.

[ ! ]Failure Reason / Root Cause Analysis

Sensitive token privilege exercised during API call (`PrivilegeList`).

Operational Metadata & Applicability

Log Category:Privilege Use

Audit Type Classification:Success / Failure Audit

Supported Operating Systems:Windows Server 2016, 2019, 2022 / Windows Client 10, 11 (Enterprise / Pro)

Threat Hunting Keywords:

4673privileged service calledsebackupprivilegentds.ditsetakeownershipprivilege

MITRE ATT&CK Framework Alignment

T1003.003

NTDSTactic: Credential Access

T1134

Access Token ManipulationTactic: Privilege Escalation

Mitigation Playbook & Recommended SOC Actions

•Inspect `PrivilegeList` and `ProcessName` immediately. If `SeBackupPrivilege` is exercised by non-backup binaries (e.g., `cmd.exe`, `powershell.exe`, or unknown tools), treat as an active credential dumping attempt.

Representative Windows Event XML Schema

<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>4673</EventID>
    <Version>0</Version>
    <Level>0</Level>
    <Task>12544</Task>
    <Opcode>0</Opcode>
    <Keywords>0x8020000000000000</Keywords>
    <TimeCreated SystemTime="2026-07-17T09:54:44.279Z" />
    <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 privileged service was called -->
  </EventData>
</Event>

Correlated / Related Security Event IDs

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