mirror of
https://github.com/splunk/security_content
synced 2026-06-08 17:32:49 +00:00
ljstella
50 lines
2.4 KiB
YAML
50 lines
2.4 KiB
YAML
name: GetAdGroup with PowerShell Script Block
|
|
id: e4c73d68-794b-468d-b4d0-dac1772bbae7
|
|
version: 9
|
|
date: '2025-06-24'
|
|
author: Mauricio Velazco, Splunk
|
|
status: production
|
|
type: Hunting
|
|
description:
|
|
The following analytic detects the execution of the `Get-AdGroup` PowerShell
|
|
cmdlet using PowerShell Script Block Logging (EventCode=4104). This cmdlet is used
|
|
to enumerate all domain groups, which adversaries may exploit for situational awareness
|
|
and Active Directory discovery. Monitoring this activity is crucial as it can indicate
|
|
reconnaissance efforts within the network. If confirmed malicious, this behavior
|
|
could lead to further exploitation, such as privilege escalation or lateral movement,
|
|
by providing attackers with detailed information about the domain's group structure.
|
|
data_source:
|
|
- Powershell Script Block Logging 4104
|
|
search:
|
|
'`powershell` EventCode=4104 ScriptBlockText = "*Get-ADGroup*" | fillnull
|
|
| stats count min(_time) as firstTime max(_time) as lastTime by dest signature signature_id
|
|
user_id vendor_product EventID Guid Opcode Name Path ProcessID ScriptBlockId ScriptBlockText
|
|
| `security_content_ctime(firstTime)` | `security_content_ctime(lastTime)` | `getadgroup_with_powershell_script_block_filter`'
|
|
how_to_implement:
|
|
To successfully implement this analytic, you will need to enable
|
|
PowerShell Script Block Logging on some or all endpoints. Additional setup here
|
|
https://help.splunk.com/en/security-offerings/splunk-user-behavior-analytics/get-data-in/5.4.1/add-other-data-to-splunk-uba/configure-powershell-logging-to-see-powershell-anomalies-in-splunk-uba.
|
|
known_false_positives:
|
|
Administrators or power users may use this PowerShell commandlet
|
|
for troubleshooting.
|
|
references:
|
|
- https://attack.mitre.org/techniques/T1069/002/
|
|
- https://docs.microsoft.com/en-us/powershell/module/activedirectory/get-adgroup?view=windowsserver2019-ps
|
|
tags:
|
|
analytic_story:
|
|
- Active Directory Discovery
|
|
asset_type: Endpoint
|
|
mitre_attack_id:
|
|
- T1069.002
|
|
product:
|
|
- Splunk Enterprise
|
|
- Splunk Enterprise Security
|
|
- Splunk Cloud
|
|
security_domain: endpoint
|
|
tests:
|
|
- name: True Positive Test
|
|
attack_data:
|
|
- data: https://media.githubusercontent.com/media/splunk/attack_data/master/datasets/attack_techniques/T1069.002/AD_discovery/windows-powershell-xml.log
|
|
source: XmlWinEventLog:Microsoft-Windows-PowerShell/Operational
|
|
sourcetype: XmlWinEventLog
|