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tccontre
62 lines
2.1 KiB
YAML
62 lines
2.1 KiB
YAML
name: Get DomainUser with PowerShell Script Block
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id: 61994268-04f4-11ec-865c-acde48001122
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version: 2
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date: '2022-03-22'
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author: Teoderick Contreras, Mauricio Velazco, Splunk
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type: TTP
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datamodel: []
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description: The following analytic utilizes PowerShell Script Block Logging (EventCode=4104)
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to identify the execution of the `Get-DomainUser` commandlet. `GetDomainUser` is
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part of PowerView, a PowerShell tool used to perform enumeration on Windows domains.
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Red Teams and adversaries alike may use PowerView to enumerate domain users for
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situational awareness and Active Directory Discovery.
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search: '`powershell` EventCode=4104 ScriptBlockText = "*Get-DomainUser*"
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| stats count min(_time) as firstTime max(_time) as lastTime by EventCode ScriptBlockText Computer user_id
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| `security_content_ctime(firstTime)`
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| `security_content_ctime(lastTime)`
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| `get_domainuser_with_powershell_script_block_filter`'
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how_to_implement: The following Hunting analytic requires PowerShell operational logs
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to be imported. Modify the powershell macro as needed to match the sourcetype or
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add index. This analytic is specific to 4104, or PowerShell Script Block Logging.
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known_false_positives: Administrators or power users may use this command for troubleshooting.
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references:
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- https://powersploit.readthedocs.io/en/latest/Recon/Get-DomainUser/
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tags:
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analytic_story:
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- Active Directory Discovery
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confidence: 50
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context:
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- Source:Endpoint
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- Stage:Discovery
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dataset:
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- https://media.githubusercontent.com/media/splunk/attack_data/master/datasets/attack_techniques/T1087.002/AD_discovery/windows-powershell-xml.log
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impact: 50
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kill_chain_phases:
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- Reconnaissance
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message: powershell process having commandline $Message$ for user enumeration
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mitre_attack_id:
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- T1087.002
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- T1087
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observable:
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- name: ComputerName
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type: Hostname
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role:
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- Victim
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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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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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- EventCode
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- Message
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- ComputerName
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- User
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risk_score: 25
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security_domain: endpoint
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asset_type: Endpoint
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