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39 lines
1006 B
YAML
39 lines
1006 B
YAML
title: Regsvr32 Anomaly
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status: experimental
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description: Detects various anomalies in relation to regsvr32.exe
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author: Florian Roth
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references:
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- https://subt0x10.blogspot.de/2017/04/bypass-application-whitelisting-script.html
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tags:
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- attack.t1117
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- attack.defense_evasion
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- attack.execution
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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: '*\regsvr32.exe'
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CommandLine: '*\Temp\\*'
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selection2:
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Image: '*\regsvr32.exe'
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ParentImage: '*\powershell.exe'
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selection3:
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Image: '*\regsvr32.exe'
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CommandLine:
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- '*/i:http* scrobj.dll'
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- '*/i:ftp* scrobj.dll'
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selection4:
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Image: '*\wscript.exe'
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ParentImage: '*\regsvr32.exe'
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selection5:
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Image: '*\EXCEL.EXE'
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CommandLine: '*..\..\..\Windows\System32\regsvr32.exe *'
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condition: 1 of them
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fields:
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- CommandLine
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- ParentCommandLine
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falsepositives:
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- Unknown
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level: high
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