Windows Process Command-Line Flags Indicating Auditpol Policy Tampering

Detects auditpol runs with flags that disable key audit categories, indicating potential audit policy tampering for defense impairment.

FreeReviewedSigma · High · v2
Product
windows
Category
process_creation
Author
Nasreddine Bencherchali (Nextron Systems) (SigmaHQ), DRL 1.1
Published
2021-12-18
Updated
2026-07-31
title: Windows Process Command-Line Flags Indicating Auditpol Policy Tampering
id: 27b7e1a9-056e-4b7d-a65c-54810d8fe569
related:
  - id: 0a13e132-651d-11eb-ae93-0242ac130002
    type: similar
  - id: c6c56ada-612b-42d1-9a29-adad3c5c2c1e
    type: derived
status: test
description: This rule flags process executions where the command line includes specific auditpol-style flags that can be used to target audit policy configuration. An attacker could use an older auditpol utility from a resource kit to disable or remove selected audit policies or restore a custom policy, impairing detection fidelity. The detection relies on Windows process creation telemetry and matching the presence of the defined /<area>:none command-line parameters.
references:
  - https://github.com/3CORESec/MAL-CL/tree/master/Descriptors/Windows%202000%20Resource%20Kit%20Tools/AuditPol
  - https://github.com/SigmaHQ/sigma/blob/master/rules/windows/process_creation/proc_creation_win_auditpol_nt_resource_kit_usage.yml
author: Nasreddine Bencherchali (Nextron Systems), Huntrule Team
date: 2021-12-18
modified: 2023-02-21
tags:
  - attack.defense-impairment
  - attack.t1685.001
logsource:
  category: process_creation
  product: windows
detection:
  selection:
    CommandLine|contains:
      - /logon:none
      - /system:none
      - /sam:none
      - /privilege:none
      - /object:none
      - /process:none
      - /policy:none
  condition: selection
falsepositives:
  - The old auditpol utility isn't available by default on recent versions of Windows as it was replaced by a newer version. The FP rate should be very low except for tools that use a similar flag structure
level: high
license: DRL-1.1