Tim Shelton
31 lines
712 B
YAML
31 lines
712 B
YAML
title: Application Executed Non-Executable Extension
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id: c3a99af4-35a9-4668-879e-c09aeb4f2bdf
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status: experimental
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description: Detects execution of files using an invalid file extension
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author: Tim Shelton
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date: 2022/01/12
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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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selection1:
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Image|endswith:
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- '.exe'
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- '.ex_'
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- '.com'
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- '.cmd'
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- '.bat'
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- '.bin'
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- '.pif'
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selection2:
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Image|endswith: 'rundll32.exe'
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selection2b:
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CommandLine|contains: ".dll"
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condition: not selection1 or (selection2 and not selection2b)
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fields:
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- Image
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- CommandLine
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falsepositives:
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- Unknown
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level: high
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