45 lines
1.2 KiB
YAML
45 lines
1.2 KiB
YAML
title: Suspicious Shells Spawn by WinRM
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author: Andreas Hunkeler (@Karneades), Markus Neis
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date: 2021/05/20
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description: Detects suspicious shell spawn from WinRM host process
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detection:
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SELECTION_1:
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EventID: 1
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SELECTION_10:
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Image: '*\bitsadmin.exe'
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SELECTION_2:
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ParentImage: '*\wsmprovhost.exe'
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SELECTION_3:
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Image: '*\cmd.exe'
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SELECTION_4:
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Image: '*\sh.exe'
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SELECTION_5:
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Image: '*\bash.exe'
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SELECTION_6:
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Image: '*\powershell.exe'
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SELECTION_7:
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Image: '*\schtasks.exe'
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SELECTION_8:
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Image: '*\certutil.exe'
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SELECTION_9:
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Image: '*\whoami.exe'
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condition: (SELECTION_1 and SELECTION_2 and (SELECTION_3 or SELECTION_4 or SELECTION_5
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or SELECTION_6 or SELECTION_7 or SELECTION_8 or SELECTION_9 or SELECTION_10))
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falsepositives:
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- Legitimate WinRM usage
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id: 5cc2cda8-f261-4d88-a2de-e9e193c86716
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level: high
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logsource:
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category: process_creation
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product: windows
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modified: 2021/05/22
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status: experimental
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tags:
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- attack.t1190
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- attack.initial_access
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- attack.persistence
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- attack.privilege_escalation
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yml_filename: win_susp_shell_spawn_from_winrm.yml
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yml_path: /Users/user/Documents/YamatoSecurity/sigma/rules/windows/process_access
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