{"id":"9f8573c9-22b4-40e3-89c1-72bc2b8d49ab","title":"Scheduled Task Creation Masquerading as System Processes","description":"Detects the creation of scheduled tasks that involve system processes, which may indicate malicious actors masquerading as or abusing these processes to execute payloads or maintain persistence.","author":"Swachchhanda Shrawan Poudel (Nextron Systems)","status":"experimental","level":"high","date":"2025-02-05","modified":"","tags":["attack.privilege-escalation","attack.execution","attack.persistence","attack.stealth","attack.t1053.005","attack.t1036.004","attack.t1036.005"],"technique_ids":["T1036.004","T1036.005","T1053.005"],"logsource":{"category":"process_creation","product":"windows"},"falsepositives":["Legitimate system administration tasks scheduling trusted system processes."],"references":["https://tria.ge/241015-l98snsyeje/behavioral2"],"source_path":"rules/windows/process_creation/proc_creation_win_schtasks_system_process.yml","source_sha256":"529f825e8437a58db909955b3537f467c5d0fddea17cd88a7b07f20e279d8033","source_url":"https://github.com/anpa1200/sigma/blob/b249e9683190cffdcaf188ccbfb90bf4759844e1/rules/windows/process_creation/proc_creation_win_schtasks_system_process.yml","license":"Detection Rule License 1.1","license_url":"https://github.com/SigmaHQ/Detection-Rule-License/blob/main/LICENSE.Detection.Rules.md","yaml":"title: Scheduled Task Creation Masquerading as System Processes\nid: 9f8573c9-22b4-40e3-89c1-72bc2b8d49ab\nstatus: experimental\ndescription: Detects the creation of scheduled tasks that involve system processes, which may indicate malicious actors masquerading as or abusing these processes to execute payloads or maintain persistence.\nreferences:\n    - https://tria.ge/241015-l98snsyeje/behavioral2\nauthor: Swachchhanda Shrawan Poudel (Nextron Systems)\ndate: 2025-02-05\ntags:\n    - attack.privilege-escalation\n    - attack.execution\n    - attack.persistence\n    - attack.stealth\n    - attack.t1053.005\n    - attack.t1036.004\n    - attack.t1036.005\nlogsource:\n    category: process_creation\n    product: windows\ndetection:\n    selection_img:\n        - Image|endswith: '\\schtasks.exe'\n        - OriginalFileName: 'schtasks.exe'\n    selection_cli:\n        CommandLine|contains|windash: ' /create '\n        CommandLine|contains:\n            - ' audiodg'\n            - ' conhost'\n            - ' dwm.exe'\n            - ' explorer'\n            - ' lsass'\n            - ' lsm'\n            - ' mmc'\n            - ' msiexec'\n            - ' regsvr32'\n            - ' rundll32'\n            - ' services'\n            - ' spoolsv'\n            - ' svchost'\n            - ' taskeng'\n            - ' taskhost'\n            - ' wininit'\n            - ' winlogon'\n    condition: all of selection_*\nfalsepositives:\n    - Legitimate system administration tasks scheduling trusted system processes.\nlevel: high\n","validation":"yaml_parsed_not_backend_compiled_or_live_validated","techniques":[{"key":"enterprise/T1036.004","id":"T1036.004","name":"Masquerade Task or Service","page":"techniques/enterprise/T1036.004/"},{"key":"enterprise/T1036.005","id":"T1036.005","name":"Match Legitimate Resource Name or Location","page":"techniques/enterprise/T1036.005/"},{"key":"enterprise/T1053.005","id":"T1053.005","name":"Scheduled Task","page":"techniques/enterprise/T1053.005/"}],"data_path":"data/detection-rules/9f8573c9-22b4-40e3-89c1-72bc2b8d49ab.json","kind":"sigma"}