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P4T12ICK
57 lines
1.9 KiB
YAML
57 lines
1.9 KiB
YAML
name: GetWmiObject User Account with PowerShell
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id: b44f6ac6-0429-11ec-87e9-acde48001122
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version: 1
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date: '2021-08-23'
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author: Mauricio Velazco, Splunk
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status: production
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type: Hunting
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description: This analytic looks for the execution of `powershell.exe` with command-line
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arguments utilized to query local users. The `Get-WmiObject` commandlet combined
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with the `Win32_UserAccount` parameter is used to return a list of all local users.
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Red Teams and adversaries may leverage this commandlet to enumerate users for situational
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awareness and Active Directory Discovery.
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data_source:
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- Sysmon Event ID 1
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search:
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selection1:
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Image|endswith: powershell.exe
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selection2:
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CommandLine: '*Win32_UserAccount*'
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selection3:
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CommandLine: '*Get-WmiObject*'
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condition: (selection1) and selection2 and selection3
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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.
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known_false_positives: Administrators or power users may use this PowerShell commandlet
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for troubleshooting.
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references:
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- https://attack.mitre.org/techniques/T1087/001/
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tags:
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analytic_story:
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- Active Directory Discovery
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asset_type: Endpoint
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confidence: 50
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impact: 30
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message: Local user discovery enumeration using PowerShell on $dest$ by $user$
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mitre_attack_id:
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- T1087
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- T1087.001
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observable:
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- name: dest
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type: Endpoint
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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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risk_score: 15
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security_domain: endpoint
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tests:
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- name: True Positive Test
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attack_data:
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- data: https://media.githubusercontent.com/media/splunk/attack_data/master/datasets/attack_techniques/T1087.001/AD_discovery/windows-sysmon.log
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source: XmlWinEventLog:Microsoft-Windows-Sysmon/Operational
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sourcetype: xmlwineventlog
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