title: PsExec Tool Execution
status: experimental
description: Detects PsExec service installation and execution events (service and Sysmon)
author: Thomas Patzke
references:
    - https://www.jpcert.or.jp/english/pub/sr/ir_research.html
    - https://jpcertcc.github.io/ToolAnalysisResultSheet
tags:
    - attack.execution
    - attack.t1035
    - attack.s0029
logsource:
    product: windows
detection:
    service_installation:
        EventID: 7045
        ServiceName: 'PSEXESVC'
        ServiceFileName: '*\PSEXESVC.exe'
    service_execution:
        EventID: 7036
        ServiceName: 'PSEXESVC'
    sysmon_processcreation:
        EventID: 1
        Image: '*\PSEXESVC.exe'
        User: 'NT AUTHORITY\SYSTEM'
    condition: 1 of them
fields:
    - EventID
    - CommandLine
    - ParentCommandLine
    - ServiceName
    - ServiceFileName
falsepositives:
    - unknown
level: low