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38 lines
1.2 KiB
YAML
38 lines
1.2 KiB
YAML
title: CMSTP UAC Bypass via COM Object Access
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status: stable
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description: Detects UAC Bypass Attempt Using Microsoft Connection Manager Profile Installer Autoelevate-capable COM Objects
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tags:
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- attack.defense_evasion
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- attack.privilege_escalation
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- attack.execution
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- attack.t1088
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- attack.t1191
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- attack.g0069
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author: Nik Seetharaman
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references:
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- http://www.endurant.io/cmstp/detecting-cmstp-enabled-code-execution-and-uac-bypass-with-sysmon/
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- https://twitter.com/hFireF0X/status/897640081053364225
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logsource:
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product: windows
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service: sysmon
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detection:
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# CMSTP Spawning Child Process
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selection1:
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EventID: 1
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ParentCommandLine:
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- '*\DllHost.exe'
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- '*\{3E5FC7F9-9A51-4367-9063-A120244FBEC7}' #CMSTPLUA
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selection2:
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EventID: 1
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ParentCommandLine:
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- '*\DllHost.exe'
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- '*\{3E000D72-A845-4CD9-BD83-80C07C3B881F}' #CMLUAUTIL, see https://twitter.com/hFireF0X/status/897640081053364225
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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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- Hashes
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falsepositives:
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- Legitimate CMSTP use (unlikely in modern enterprise environments)
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level: high
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