Password Change on Directory Service Restore Mode (DSRM) Account — Sigma Rule

Rule metadata and linked tags

Author: Thomas Patzke. Source status: stable; severity: high. Source dates: 2017-02-19 / 2020-08-23.

{
  "product": "windows",
  "service": "security"
}

Pinned original Sigma rule · Detection Rule License 1.1

Source SHA-256: d220216d44fc1f8e76e73356ba36774b1bd45aefcd6c9c202a07cc55b598b6d4

Detection logic

Original source YAML. Source-tag agreement is not proof of complete semantic coverage. This rule has not been compiled for a SIEM backend or validated against live telemetry here.

title: Password Change on Directory Service Restore Mode (DSRM) Account
id: 53ad8e36-f573-46bf-97e4-15ba5bf4bb51
related:
    - id: b61e87c0-50db-4b2e-8986-6a2be94b33b0
      type: similar
status: stable
description: |
    Detects potential attempts made to set the Directory Services Restore Mode administrator password.
    The Directory Service Restore Mode (DSRM) account is a local administrator account on Domain Controllers.
    Attackers may change the password in order to obtain persistence.
references:
    - https://adsecurity.org/?p=1714
    - https://learn.microsoft.com/en-us/previous-versions/windows/it-pro/windows-10/security/threat-protection/auditing/event-4794
author: Thomas Patzke
date: 2017-02-19
modified: 2020-08-23
tags:
    - attack.privilege-escalation
    - attack.persistence
    - attack.t1098
logsource:
    product: windows
    service: security
detection:
    selection:
        EventID: 4794
    condition: selection
falsepositives:
    - Initial installation of a domain controller.
level: high

Original YAML and metadata in JSON

False positives

• Initial installation of a domain controller.

Source references

• https://adsecurity.org/?p=1714
• https://learn.microsoft.com/en-us/previous-versions/windows/it-pro/windows-10/security/threat-protection/auditing/event-4794