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getdomaingroup_with_powershell_script_block.yml
60 lines (60 loc) · 2.32 KB
/
getdomaingroup_with_powershell_script_block.yml
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name: GetDomainGroup with PowerShell Script Block
id: 09725404-a44f-4ed3-9efa-8ed5d69e4c53
version: 2
date: '2022-05-02'
author: Mauricio Velazco, Splunk
status: production
type: TTP
description: The following analytic utilizes PowerShell Script Block Logging (EventCode=4104)
to identify the execution of the `Get-DomainGroup` commandlet. `Get-DomainGroup`
is part of PowerView, a PowerShell tool used to perform enumeration on Windows domains.
As the name suggests, `Get-DomainGroup` is used to query domain groups. Red Teams
and adversaries may leverage this function to enumerate domain groups for situational
awareness and Active Directory Discovery.
data_source:
- Powershell Script Block Logging 4104
search: '`powershell` EventCode=4104 (ScriptBlockText = "*Get-DomainGroup*") | stats
count min(_time) as firstTime max(_time) as lastTime by Opcode Computer UserID EventCode
ScriptBlockText | `security_content_ctime(firstTime)` | `getdomaingroup_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://docs.splunk.com/Documentation/UBA/5.0.4.1/GetDataIn/AddPowerShell#Configure_module_logging_for_PowerShell.
known_false_positives: Administrators or power users may use this PowerView functions
for troubleshooting.
references:
- https://attack.mitre.org/techniques/T1069/002/
- https://powersploit.readthedocs.io/en/latest/Recon/Get-DomainGroup/
tags:
analytic_story:
- Active Directory Discovery
asset_type: Endpoint
confidence: 50
impact: 30
message: Domain group discovery enumeration using PowerView on $Computer$ by $UserID$
mitre_attack_id:
- T1069
- T1069.002
observable:
- name: Computer
type: Endpoint
role:
- Victim
product:
- Splunk Enterprise
- Splunk Enterprise Security
- Splunk Cloud
required_fields:
- _time
- ScriptBlockText
- Opcode
- Computer
- UserID
- EventCode
risk_score: 15
security_domain: endpoint
tests:
- name: True Positive Test
attack_data:
- data: https://media.githubusercontent.com/media/splunk/attack_data/master/datasets/attack_techniques/T1059.001/powershell_script_block_logging/domaingroup.log
source: XmlWinEventLog:Microsoft-Windows-PowerShell/Operational
sourcetype: xmlwineventlog