Detection rules › Sigma
Suspicious Get Local Groups Information - PowerShell
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.
MITRE ATT&CK coverage
| Tactic | Techniques |
|---|---|
| Discovery | T1069.001 Permission Groups Discovery: Local Groups |
Event coverage
| Provider | Event | Title |
|---|---|---|
| PowerShell | Event ID 4104 | Creating Scriptblock text (MessageNumber of MessageTotal). |
Rule body yaml
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
Stages and Predicates
Stage 0: condition
selection_localgroup or all of selection_wmi_*Stage 1: selection_localgroup
selection_localgroup:
ScriptBlockText|contains:
- 'get-localgroup '
- 'get-localgroupmember '
Stage 2: selection_wmi_module
selection_wmi_module:
ScriptBlockText|contains:
- 'get-wmiobject '
- 'gwmi '
- 'get-ciminstance '
- 'gcim '
Stage 3: selection_wmi_class
selection_wmi_class:
ScriptBlockText|contains: 'win32_group'
Indicators
Each row is a field, operator, and value that the rule matches. The corpus column counts how many other rules in the catalog look for the same combination: high numbers point to widely-used, community-vetted indicators. Blank or 1 shows that the indicator is specific to this rule.
| Field | Kind | Values |
|---|---|---|
ScriptBlockText | match |
|