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40 lines
1.3 KiB
YAML
40 lines
1.3 KiB
YAML
title: Wmiprvse Spawning Process
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id: d21374ff-f574-44a7-9998-4a8c8bf33d7d
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description: Detects wmiprvse spawning processes
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status: experimental
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date: 2019/08/15
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modified: 2021/08/26
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author: Roberto Rodriguez @Cyb3rWard0g
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references:
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- https://threathunterplaybook.com/notebooks/windows/02_execution/WIN-190810201010.html
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tags:
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- attack.execution
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- attack.t1047
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logsource:
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category: process_creation
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product: windows
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detection:
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selection:
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ParentImage|endswith: '\WmiPrvSe.exe'
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filter:
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- LogonId:
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- '0x3e7' # LUID 999 for SYSTEM
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- 'null' # too many false positives
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- SubjectLogonId:
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- '0x3e7' # LUID 999 for SYSTEM
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- 'null' # too many false positives
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- User|startswith:
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- 'NT AUTHORITY\SYSTEM' # if we don't have LogonId data, fallback on username detection
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- 'AUTORITE NT\Sys' # French language settings
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- Image|endswith:
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- '\WmiPrvSE.exe'
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- '\WerFault.exe'
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filter_null1: # some backends need the null value in a separate expression
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LogonId: null
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filter_null2: # some backends need the null value in a separate expression
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SubjectLogonId: null
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condition: selection and not filter and not filter_null1 and not filter_null2
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falsepositives:
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- Unknown
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level: high
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