{"id":"3371f518-5fe3-4cf6-a14b-2a0ae3fd8a4f","title":"Sysinternals PsService Execution","description":"Detects usage of Sysinternals PsService which can be abused for service reconnaissance and tampering","author":"Nasreddine Bencherchali (Nextron Systems)","status":"test","level":"medium","date":"2022-06-16","modified":"2023-02-24","tags":["attack.privilege-escalation","attack.discovery","attack.persistence","attack.t1543.003"],"technique_ids":["T1543.003"],"logsource":{"category":"process_creation","product":"windows"},"falsepositives":["Legitimate use of PsService by an administrator"],"references":["https://learn.microsoft.com/en-us/sysinternals/downloads/psservice"],"source_path":"rules/windows/process_creation/proc_creation_win_sysinternals_psservice.yml","source_sha256":"ba4bd59a11e80c8b69699b7c11d049cdc06b6560da78e09dead00d7a4a18b9a7","source_url":"https://github.com/anpa1200/sigma/blob/b249e9683190cffdcaf188ccbfb90bf4759844e1/rules/windows/process_creation/proc_creation_win_sysinternals_psservice.yml","license":"Detection Rule License 1.1","license_url":"https://github.com/SigmaHQ/Detection-Rule-License/blob/main/LICENSE.Detection.Rules.md","yaml":"title: Sysinternals PsService Execution\nid: 3371f518-5fe3-4cf6-a14b-2a0ae3fd8a4f\nstatus: test\ndescription: Detects usage of Sysinternals PsService which can be abused for service reconnaissance and tampering\nreferences:\n    - https://learn.microsoft.com/en-us/sysinternals/downloads/psservice\nauthor: Nasreddine Bencherchali (Nextron Systems)\ndate: 2022-06-16\nmodified: 2023-02-24\ntags:\n    - attack.privilege-escalation\n    - attack.discovery\n    - attack.persistence\n    - attack.t1543.003\nlogsource:\n    category: process_creation\n    product: windows\ndetection:\n    selection:\n        - OriginalFileName: 'psservice.exe'\n        - Image|endswith:\n              - '\\PsService.exe'\n              - '\\PsService64.exe'\n    condition: selection\nfalsepositives:\n    - Legitimate use of PsService by an administrator\nlevel: medium\n","validation":"yaml_parsed_not_backend_compiled_or_live_validated","techniques":[{"key":"enterprise/T1543.003","id":"T1543.003","name":"Windows Service","page":"techniques/enterprise/T1543.003/"}],"data_path":"data/detection-rules/3371f518-5fe3-4cf6-a14b-2a0ae3fd8a4f.json","kind":"sigma"}