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https://github.com/splunk/security_content
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pyth0n1c
76 lines
2.8 KiB
YAML
76 lines
2.8 KiB
YAML
name: Get-DomainTrust with PowerShell
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id: 4fa7f846-054a-11ec-a836-acde48001122
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version: 1
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date: '2021-08-24'
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author: Michael Haag, Splunk
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type: TTP
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datamodel:
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- Endpoint
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description: This analytic identifies Get-DomainTrust from PowerView in order to gather
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domain trust information. Typically, this is utilized within a script being executed
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and used to enumerate the domain trust information. This grants the adversary an
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understanding of how large or small the domain is. During triage, review parallel
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processes using an EDR product or 4688 events. It will be important to understand
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the timeline of events around this activity.
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search: '| tstats `security_content_summariesonly` count min(_time) as firstTime max(_time)
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as lastTime from datamodel=Endpoint.Processes where Processes.process=*get-domaintrust*
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by Processes.dest Processes.user Processes.parent_process_name Processes.process_name
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Processes.process Processes.process_id Processes.parent_process_id | `drop_dm_object_name(Processes)`
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| `security_content_ctime(firstTime)` | `security_content_ctime(lastTime)` | `get_domaintrust_with_powershell_filter`'
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how_to_implement: To successfully implement this search you need to be ingesting information
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on process that include the name of the process responsible for the changes from
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your endpoints into the `Endpoint` datamodel in the `Processes` node. In addition,
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confirm the latest CIM App 4.20 or higher is installed and the latest TA for the
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endpoint product.
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known_false_positives: Limited false positives as this requires an active Administrator
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or adversary to bring in, import, and execute.
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references:
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- https://blog.harmj0y.net/redteaming/a-guide-to-attacking-domain-trusts/
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tags:
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analytic_story:
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- Active Directory Discovery
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confidence: 40
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context:
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- Source:Endpoint
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- Stage:Defense Evasion
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dataset:
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- https://media.githubusercontent.com/media/splunk/attack_data/master/datasets/attack_techniques/T1482/discovery/windows-sysmon.log
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impact: 30
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kill_chain_phases:
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- Reconnaissance
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message: Suspicious PowerShell Get-DomainTrust was identified on endpoint $dest$
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by user $user$.
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mitre_attack_id:
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- T1482
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observable:
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- name: user
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type: User
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role:
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- Victim
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- name: dest
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type: Hostname
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role:
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- Victim
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product:
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- Splunk Enterprise
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- Splunk Enterprise Security
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- Splunk Cloud
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required_fields:
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- _time
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- Processes.dest
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- Processes.user
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- Processes.parent_process_name
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- Processes.parent_process
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- Processes.original_file_name
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- Processes.process_name
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- Processes.process
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- Processes.process_id
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- Processes.parent_process_path
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- Processes.process_path
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- Processes.parent_process_id
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risk_score: 12
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security_domain: endpoint
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supported_tas:
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- Splunk_TA_microsoft_sysmon
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asset_type: Endpoint
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