mirror of
https://github.com/splunk/security_content
synced 2026-06-08 17:32:49 +00:00
root
61 lines
2.1 KiB
YAML
61 lines
2.1 KiB
YAML
name: Get DomainUser with PowerShell Script Block
|
|
id: 61994268-04f4-11ec-865c-acde48001122
|
|
version: 1
|
|
date: '2021-08-24'
|
|
author: Teoderick Contreras, Splunk
|
|
type: TTP
|
|
datamodel:
|
|
- Endpoint
|
|
description: his search is to detect a powershell command Get-DomainUser to do user
|
|
enumeration to the active directory. This command is function seen in powerspoit
|
|
and powerview tool that are designed to pentest active directory or domain controller
|
|
for possible attack. This is a good TTP for alerting SOC if there is a pentest or
|
|
recon happening on the system. try to look for lateral movement technique or credential
|
|
dumping techniques in the system.
|
|
search: '`powershell` EventCode=4104 Message = "*Get-DomainUser*" | stats count min(_time)
|
|
as firstTime max(_time) as lastTime by EventCode Message ComputerName User | `security_content_ctime(firstTime)`
|
|
| `security_content_ctime(lastTime)` | `get_domainuser_with_powershell_script_block_filter`'
|
|
how_to_implement: The following Hunting analytic requires PowerShell operational logs
|
|
to be imported. Modify the powershell macro as needed to match the sourcetype or
|
|
add index. This analytic is specific to 4104, or PowerShell Script Block Logging.
|
|
known_false_positives: unknown
|
|
references:
|
|
- https://powersploit.readthedocs.io/en/latest/Recon/Get-DomainUser/
|
|
tags:
|
|
analytic_story:
|
|
- Active Directory Discovery
|
|
dataset:
|
|
- https://media.githubusercontent.com/media/splunk/attack_data/master/datasets/attack_techniques/T1087.002/AD_discovery/windows-powershell.log
|
|
kill_chain_phases:
|
|
- Reconnaissance
|
|
mitre_attack_id:
|
|
- T1087.002
|
|
product:
|
|
- Splunk Enterprise
|
|
- Splunk Enterprise Security
|
|
- Splunk Cloud
|
|
required_fields:
|
|
- _time
|
|
- EventCode
|
|
- Message
|
|
- ComputerName
|
|
- User
|
|
security_domain: endpoint
|
|
impact: 50
|
|
confidence: 50
|
|
risk_score: 25
|
|
context:
|
|
- source:endpoint
|
|
- stage:Reconnaissance
|
|
message: powershell process having commandline $Message$ for user enumeration
|
|
observable:
|
|
- name: ComputerName
|
|
type: Hostname
|
|
role:
|
|
- Victim
|
|
- name: User
|
|
type: User
|
|
role:
|
|
- Victim
|
|
automated_detection_testing: passed
|