Suspicious Get Local Groups Information - PowerShell — Sigma Rule

Rule metadata and linked tags

Author: frack113. Source status: test; severity: low. Source dates: 2021-12-12 / 2025-08-22.

{
  "product": "windows",
  "category": "ps_script",
  "definition": "Requirements: Script Block Logging must be enabled"
}

Pinned original Sigma rule · Detection Rule License 1.1

Source SHA-256: 1cf1b2a00aa28996b954b06fa03201b9d432f1cae9bb17392dde1f5067905bf4

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: Suspicious Get Local Groups Information - PowerShell
id: fa6a5a45-3ee2-4529-aa14-ee5edc9e29cb
related:
    - id: cef24b90-dddc-4ae1-a09a-8764872f69fc
      type: similar
status: test
description: |
    Detects the use of PowerShell modules and cmdlets to gather local group information.
    Adversaries may use local system permission groups to determine which groups exist and which users belong to a particular group such as the local administrators group.
references:
    - https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1069.001/T1069.001.md
author: frack113
date: 2021-12-12
modified: 2025-08-22
tags:
    - attack.discovery
    - attack.t1069.001
logsource:
    product: windows
    category: ps_script
    definition: 'Requirements: Script Block Logging must be enabled'
detection:
    selection_localgroup:
        ScriptBlockText|contains:
            - 'get-localgroup '
            - 'get-localgroupmember '
    selection_wmi_module:
        ScriptBlockText|contains:
            - 'get-wmiobject '
            - 'gwmi '
            - 'get-ciminstance '
            - 'gcim '
    selection_wmi_class:
        ScriptBlockText|contains: 'win32_group' # Covers both win32_group and win32_groupuser
    condition: selection_localgroup or all of selection_wmi_*
falsepositives:
    - Inventory scripts or admin tasks
level: low

Original YAML and metadata in JSON

False positives

• Inventory scripts or admin tasks

Source references

• https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1069.001/T1069.001.md