title: CMSTP Execution
status: experimental
description: Detects various indicators of Microsoft Connection Manager Profile Installer execution
author: Nik Seetharaman
status: Stable
references:
    - http://www.endurant.io/cmstp/detecting-cmstp-enabled-code-execution-and-uac-bypass-with-sysmon/
logsource:
    product: windows
    service: sysmon
detection:
    # CMSTP Spawning Child Process
    selection1:
        EventID: 1
        ParentImage: '*\cmstp.exe'
    # Registry Object Add
    selection2:
        EventID: 12
        TargetObject: '*\cmmgr32.exe*'
    # Registry Object Value Set
    selection3:
        EventID: 13
        TargetObject: '*\cmmgr32.exe*'
    # Process Access Call Trace
    selection4:
        EventID: 10
        CallTrace: '*cmlua.dll*'
    condition: 1 of them
fields:
    - CommandLine
    - ParentCommandLine
    - Details
falsepositives:
    - Legitimate CMSTP use (unlikely in modern enterprise environments)
level: high