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26 lines
1.0 KiB
YAML
26 lines
1.0 KiB
YAML
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title: Malware Shellcode in Verclsid Target Process
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status: experimental
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description: Detetcs a process access to verclsid.exe that injects shellcode from a Microsoft Office application / VBA macro
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reference: https://twitter.com/JohnLaTwC/status/837743453039534080
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author: John Lambert (tech), Florian Roth (rule)
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date: 2017/03/04
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logsource:
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product: sysmon
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description: 'Use the following config to generate the necessary Event ID 10 Process Access events: <ProcessAccess onmatch="include"><CallTrace condition="contains">VBE7.DLL</CallTrace></ProcessAccess><ProcessAccess onmatch="exclude"><CallTrace condition="excludes">UNKNOWN</CallTrace></ProcessAccess>'
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detection:
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selection:
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EventID: 10
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TargetImage: '*\verclsid.exe'
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GrantedAccess: '0x1FFFFF'
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combination1:
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CallTrace: '*|UNKNOWN(*VBE7.DLL*'
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combination2:
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SourceImage: '*\Microsoft Office\*'
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CallTrace: '*|UNKNOWN*'
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condition: selection and ( combination1 or combination2 )
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falsepositives:
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- unknown
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level: high
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