phantinuss
46 lines
1.7 KiB
YAML
46 lines
1.7 KiB
YAML
title: CMSTP UAC Bypass via COM Object Access
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id: 4b60e6f2-bf39-47b4-b4ea-398e33cfe253
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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 (e.g. UACMe ID of 41, 43, 58 or 65)
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tags:
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- attack.execution
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- attack.defense_evasion
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- attack.privilege_escalation
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- attack.t1548.002
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- attack.t1088 # an old one
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- attack.t1218.003
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- attack.t1191 # an old one
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- attack.g0069
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- car.2019-04-001
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author: Nik Seetharaman, Christian Burkard
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modified: 2019/07/31
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date: 2021/08/31
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references:
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- https://web.archive.org/web/20190720093911/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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- https://medium.com/falconforce/falconfriday-detecting-uac-bypasses-0xff16-86c2a9107abf
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- https://github.com/hfiref0x/UACME
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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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selection:
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ParentImage|endswith: '\DllHost.exe'
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IntegrityLevel:
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- 'High'
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- 'System'
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ParentCommandLine|contains:
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- ' /Processid:{3E5FC7F9-9A51-4367-9063-A120244FBEC7}'
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- ' /Processid:{3E000D72-A845-4CD9-BD83-80C07C3B881F}'
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- ' /Processid:{BD54C901-076B-434E-B6C7-17C531F4AB41}'
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- ' /Processid:{D2E7041B-2927-42FB-8E9F-7CE93B6DC937}'
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- ' /Processid:{E9495B87-D950-4AB5-87A5-FF6D70BF3E90}'
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condition: selection
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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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