67 lines
1.5 KiB
YAML
67 lines
1.5 KiB
YAML
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title: System File Execution Location Anomaly
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ruletype: Sigma
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author: Florian Roth, Patrick Bareiss, Anton Kutepov, oscd.community
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date: 2017/11/27
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description: Detects a Windows program executable started in a suspicious folder
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detection:
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SELECTION_1:
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EventID: 1
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SELECTION_2:
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Image:
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- '*\svchost.exe'
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- '*\rundll32.exe'
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- '*\services.exe'
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- '*\powershell.exe'
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- '*\regsvr32.exe'
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- '*\spoolsv.exe'
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- '*\lsass.exe'
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- '*\smss.exe'
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- '*\csrss.exe'
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- '*\conhost.exe'
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- '*\wininit.exe'
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- '*\lsm.exe'
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- '*\winlogon.exe'
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- '*\explorer.exe'
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- '*\taskhost.exe'
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- '*\Taskmgr.exe'
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- '*\sihost.exe'
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- '*\RuntimeBroker.exe'
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- '*\smartscreen.exe'
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- '*\dllhost.exe'
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- '*\audiodg.exe'
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- '*\wlanext.exe'
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SELECTION_3:
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Image:
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- C:\Windows\System32\\*
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- C:\Windows\system32\\*
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- C:\Windows\SysWow64\\*
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- C:\Windows\SysWOW64\\*
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- C:\Windows\winsxs\\*
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- C:\Windows\WinSxS\\*
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- C:\avast! sandbox*
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SELECTION_4:
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Image: '*\SystemRoot\System32\\*'
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SELECTION_5:
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Image: C:\Windows\explorer.exe
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condition: (SELECTION_1 and SELECTION_2 and not (SELECTION_3 or SELECTION_4 or
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SELECTION_5))
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falsepositives:
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- Exotic software
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fields:
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- ComputerName
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- User
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- Image
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id: e4a6b256-3e47-40fc-89d2-7a477edd6915
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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: 2021/03/02
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references:
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- https://twitter.com/GelosSnake/status/934900723426439170
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status: experimental
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tags:
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- attack.defense_evasion
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- attack.t1036
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