37 lines
1.2 KiB
YAML
37 lines
1.2 KiB
YAML
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title: Powershell WMI Persistence
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ruletype: Sigma
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author: frack113
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date: 2021/08/19
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description: Adversaries may establish persistence and elevate privileges by executing
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malicious content triggered by a Windows Management Instrumentation (WMI) event
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subscription.
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detection:
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SELECTION_1:
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ScriptBlockText: '*New-CimInstance *'
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SELECTION_2:
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ScriptBlockText: '*-Namespace root/subscription *'
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SELECTION_3:
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ScriptBlockText: '*-Property *'
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SELECTION_4:
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ScriptBlockText: '*-ClassName __EventFilter *'
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SELECTION_5:
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ScriptBlockText: '*-ClassName CommandLineEventConsumer *'
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condition: (SELECTION_1 and SELECTION_2 and SELECTION_3 and (SELECTION_4 or SELECTION_5))
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falsepositives:
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- Unknown
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id: 9e07f6e7-83aa-45c6-998e-0af26efd0a85
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level: medium
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logsource:
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category: ps_script
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definition: EnableScriptBlockLogging must be set to enable
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product: windows
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modified: 2021/10/16
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references:
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- https://github.com/redcanaryco/atomic-red-team/blob/master/atomics/T1546.003/T1546.003.md
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- https://github.com/EmpireProject/Empire/blob/master/data/module_source/persistence/Persistence.psm1#L545
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status: experimental
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tags:
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- attack.privilege_escalation
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- attack.t1546.003
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