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win_system_exe_anomaly.yml
59 lines (59 loc) · 1.67 KB
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win_system_exe_anomaly.yml
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title: System File Execution Location Anomaly
id: e4a6b256-3e47-40fc-89d2-7a477edd6915
status: experimental
description: Detects a Windows program executable started in a suspicious folder
references:
- https://twitter.com/GelosSnake/status/934900723426439170
author: Florian Roth, Patrick Bareiss, Anton Kutepov, oscd.community
date: 2017/11/27
modified: 2021/03/02
tags:
- attack.defense_evasion
- attack.t1036
logsource:
category: process_creation
product: windows
detection:
selection:
Image|endswith:
- '\svchost.exe'
- '\rundll32.exe'
- '\services.exe'
- '\powershell.exe'
- '\regsvr32.exe'
- '\spoolsv.exe'
- '\lsass.exe'
- '\smss.exe'
- '\csrss.exe'
- '\conhost.exe'
- '\wininit.exe'
- '\lsm.exe'
- '\winlogon.exe'
- '\explorer.exe'
- '\taskhost.exe'
- '\Taskmgr.exe'
- '\sihost.exe'
- '\RuntimeBroker.exe'
- '\smartscreen.exe'
- '\dllhost.exe'
- '\audiodg.exe'
- '\wlanext.exe'
filter:
- Image|startswith:
- 'C:\Windows\System32\'
- 'C:\Windows\system32\'
- 'C:\Windows\SysWow64\'
- 'C:\Windows\SysWOW64\'
- 'C:\Windows\winsxs\'
- 'C:\Windows\WinSxS\'
- 'C:\avast! sandbox'
- Image|contains: '\SystemRoot\System32\'
- Image: 'C:\Windows\explorer.exe'
condition: selection and not filter
fields:
- ComputerName
- User
- Image
falsepositives:
- Exotic software
level: high