splunk-security_content/docs/_posts/2021-08-24-get-domaintrust_with_powershell.md

title, excerpt, categories, last_modified_at, toc, toc_label, tags

title	excerpt	categories	last_modified_at	toc	toc_label	tags
Get-DomainTrust with PowerShell	Domain Trust Discovery	Endpoint	2021-08-24	true		Domain Trust Discovery Discovery Splunk Enterprise Splunk Enterprise Security Splunk Cloud Endpoint

Try in Splunk Security Cloud{: .btn .btn--success}

Description

This analytic identifies Get-DomainTrust from PowerView in order to gather domain trust information. Typically, this is utilized within a script being executed and used to enumerate the domain trust information. This grants the adversary an understanding of how large or small the domain is. During triage, review parallel processes using an EDR product or 4688 events. It will be important to understand the timeline of events around this activity.

• Type: TTP
• Product: Splunk Enterprise, Splunk Enterprise Security, Splunk Cloud
• Datamodel: Endpoint
• Last Updated: 2021-08-24
• Author: Michael Haag, Splunk
• ID: 4fa7f846-054a-11ec-a836-acde48001122

ATT&CK

ID	Technique	Tactic
T1482	Domain Trust Discovery	Discovery

Search

| tstats `security_content_summariesonly` count min(_time) as firstTime max(_time) as lastTime from datamodel=Endpoint.Processes where Processes.process=*get-domaintrust* by Processes.dest Processes.user Processes.parent_process_name Processes.process_name Processes.process Processes.process_id Processes.parent_process_id 
| `drop_dm_object_name(Processes)` 
| `security_content_ctime(firstTime)` 
| `security_content_ctime(lastTime)` 
| `get_domaintrust_with_powershell_filter`

Associated Analytic Story

• Active Directory Discovery

How To Implement

To successfully implement this search you need to be ingesting information on process that include the name of the process responsible for the changes from your endpoints into the Endpoint datamodel in the Processes node. In addition, confirm the latest CIM App 4.20 or higher is installed and the latest TA for the endpoint product.

Required field

• _time
• Processes.dest
• Processes.user
• Processes.parent_process_name
• Processes.parent_process
• Processes.original_file_name
• Processes.process_name
• Processes.process
• Processes.process_id
• Processes.parent_process_path
• Processes.process_path
• Processes.parent_process_id

Kill Chain Phase

• Reconnaissance

Known False Positives

Limited false positives as this requires an active Administrator or adversary to bring in, import, and execute.

RBA

Risk Score	Impact	Confidence	Message
12.0	30	40	Suspicious PowerShell Get-DomainTrust was identified on endpoint dest by user user.

Reference

• http://www.harmj0y.net/blog/redteaming/a-guide-to-attacking-domain-trusts/

Test Dataset

Replay any dataset to Splunk Enterprise by using our replay.py tool or the UI. Alternatively you can replay a dataset into a Splunk Attack Range

• https://media.githubusercontent.com/media/splunk/attack_data/master/datasets/attack_techniques/T1482/discovery/windows-sysmon.log

source | version: 1