{"id":"590a5f4c-6c8c-4f10-8307-89afe9453a9d","title":"Suspicious Child Process Created as System","description":"Detection of child processes spawned with SYSTEM privileges by parents with LOCAL SERVICE or NETWORK SERVICE accounts","author":"Teymur Kheirkhabarov, Roberto Rodriguez (@Cyb3rWard0g), Open Threat Research (OTR)","status":"test","level":"high","date":"2019-10-26","modified":"2024-12-01","tags":["attack.privilege-escalation","attack.stealth","attack.t1134.002"],"technique_ids":["T1134.002"],"logsource":{"category":"process_creation","product":"windows","definition":"Requirements: ParentUser field needs sysmon >= 13.30"},"falsepositives":["Unknown"],"references":["https://speakerdeck.com/heirhabarov/hunting-for-privilege-escalation-in-windows-environment","https://foxglovesecurity.com/2016/09/26/rotten-potato-privilege-escalation-from-service-accounts-to-system/","https://github.com/antonioCoco/RogueWinRM","https://twitter.com/Cyb3rWard0g/status/1453123054243024897"],"source_path":"rules/windows/process_creation/proc_creation_win_susp_child_process_as_system_.yml","source_sha256":"84bd6b7f0ba6bcfd994263de4f6fa1ea495766de788d1d779b167caa97521041","source_url":"https://github.com/anpa1200/sigma/blob/b249e9683190cffdcaf188ccbfb90bf4759844e1/rules/windows/process_creation/proc_creation_win_susp_child_process_as_system_.yml","license":"Detection Rule License 1.1","license_url":"https://github.com/SigmaHQ/Detection-Rule-License/blob/main/LICENSE.Detection.Rules.md","yaml":"title: Suspicious Child Process Created as System\nid: 590a5f4c-6c8c-4f10-8307-89afe9453a9d\nstatus: test\ndescription: Detection of child processes spawned with SYSTEM privileges by parents with LOCAL SERVICE or NETWORK SERVICE accounts\nreferences:\n    - https://speakerdeck.com/heirhabarov/hunting-for-privilege-escalation-in-windows-environment\n    - https://foxglovesecurity.com/2016/09/26/rotten-potato-privilege-escalation-from-service-accounts-to-system/\n    - https://github.com/antonioCoco/RogueWinRM\n    - https://twitter.com/Cyb3rWard0g/status/1453123054243024897\nauthor: Teymur Kheirkhabarov, Roberto Rodriguez (@Cyb3rWard0g), Open Threat Research (OTR)\ndate: 2019-10-26\nmodified: 2024-12-01\ntags:\n    - attack.privilege-escalation\n    - attack.stealth\n    - attack.t1134.002\nlogsource:\n    category: process_creation\n    product: windows\n    definition: 'Requirements: ParentUser field needs sysmon >= 13.30'\ndetection:\n    selection:\n        ParentUser|contains:\n            - 'AUTHORI'\n            - 'AUTORI'\n        ParentUser|endswith:\n            - '\\NETWORK SERVICE'\n            - '\\LOCAL SERVICE'\n        User|contains: # covers many language settings\n            - 'AUTHORI'\n            - 'AUTORI'\n        User|endswith: # System\n            - '\\SYSTEM'\n            - '\\Système'\n            - '\\СИСТЕМА'\n        IntegrityLevel:\n            - 'System'\n            - 'S-1-16-16384'\n    filter_rundll32:\n        Image|endswith: '\\rundll32.exe'\n        CommandLine|contains: 'DavSetCookie'\n    condition: selection and not 1 of filter_*\nfalsepositives:\n    - Unknown\nlevel: high\n","validation":"yaml_parsed_not_backend_compiled_or_live_validated","techniques":[{"key":"enterprise/T1134.002","id":"T1134.002","name":"Create Process with Token","page":"techniques/enterprise/T1134.002/"}],"data_path":"data/detection-rules/590a5f4c-6c8c-4f10-8307-89afe9453a9d.json","kind":"sigma"}