PowerShell Logging Disabled Via Registry Key Tampering — Sigma Rule

Rule metadata and linked tags

Author: frack113. Source status: test; severity: high. Source dates: 2022-04-02 / 2023-08-17.

{
  "category": "registry_set",
  "product": "windows"
}

Pinned original Sigma rule · Detection Rule License 1.1

Source SHA-256: def2d009946917f0241a2871f0ae7ddefcc19f4a86bf88b629818c2b2a032890

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: PowerShell Logging Disabled Via Registry Key Tampering
id: fecfd1a1-cc78-4313-a1ea-2ee2e8ec27a7
status: test
description: Detects changes to the registry for the currently logged-in user. In order to disable PowerShell module logging, script block logging or transcription and script execution logging
references:
    - https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1112/T1112.md#atomic-test-32---windows-powershell-logging-disabled
author: frack113
date: 2022-04-02
modified: 2023-08-17
tags:
    - attack.stealth
    - attack.defense-impairment
    - attack.t1564.001
    - attack.t1112
    - attack.persistence
logsource:
    category: registry_set
    product: windows
detection:
    selection:
        TargetObject|contains:
            - '\Microsoft\Windows\PowerShell\' # PowerShell 5
            - '\Microsoft\PowerShellCore\' # PowerShell 7
        TargetObject|endswith:
            - '\ModuleLogging\EnableModuleLogging'
            - '\ScriptBlockLogging\EnableScriptBlockLogging'
            - '\ScriptBlockLogging\EnableScriptBlockInvocationLogging'
            - '\Transcription\EnableTranscripting'
            - '\Transcription\EnableInvocationHeader'
            - '\EnableScripts'
        Details: 'DWORD (0x00000000)'
    condition: selection
falsepositives:
    - Unknown
level: high
regression_tests_path: regression_data/rules/windows/registry/registry_set/registry_set_powershell_logging_disabled/info.yml
simulation:
    - type: atomic-red-team
      name: Disable PowerShell Logging via Registry
      technique: T1112
      atomic_guid: 95b25212-91a7-42ff-9613-124aca6845a8

Original YAML and metadata in JSON

False positives

• Unknown

Source references

• https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1112/T1112.md#atomic-test-32---windows-powershell-logging-disabled