Suspicious Get Local Groups Information - PowerShell

Title: Suspicious Get Local Groups Information - PowerShell
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'
  condition:selection_localgroup or all of selection_wmi_*
Falsepositives:
  -Inventory scripts or admin tasks
Level: low