{"id":"dbc1f800-0fe0-4bc0-9c66-292c2abe3f78","title":"Delete Important Scheduled Task","description":"Detects when adversaries stop services or processes by deleting their respective scheduled tasks in order to conduct data destructive activities","author":"Nasreddine Bencherchali (Nextron Systems)","status":"test","level":"high","date":"2022-09-09","modified":"2026-03-11","tags":["attack.impact","attack.t1489"],"technique_ids":["T1489"],"logsource":{"category":"process_creation","product":"windows"},"falsepositives":["Unlikely"],"references":["Internal Research"],"source_path":"rules/windows/process_creation/proc_creation_win_schtasks_delete.yml","source_sha256":"a9ebbf10ef925f0549a56d2ba58ef54376a7e4deb72397b214fb6a233ea4a722","source_url":"https://github.com/anpa1200/sigma/blob/b249e9683190cffdcaf188ccbfb90bf4759844e1/rules/windows/process_creation/proc_creation_win_schtasks_delete.yml","license":"Detection Rule License 1.1","license_url":"https://github.com/SigmaHQ/Detection-Rule-License/blob/main/LICENSE.Detection.Rules.md","yaml":"title: Delete Important Scheduled Task\nid: dbc1f800-0fe0-4bc0-9c66-292c2abe3f78\nrelated:\n    - id: 9e3cb244-bdb8-4632-8c90-6079c8f4f16d # TaskScheduler EventLog\n      type: similar\n    - id: 7595ba94-cf3b-4471-aa03-4f6baa9e5fad # Security-Audting Eventlog\n      type: similar\nstatus: test\ndescription: Detects when adversaries stop services or processes by deleting their respective scheduled tasks in order to conduct data destructive activities\nreferences:\n    - Internal Research\nauthor: Nasreddine Bencherchali (Nextron Systems)\ndate: 2022-09-09\nmodified: 2026-03-11\ntags:\n    - attack.impact\n    - attack.t1489\nlogsource:\n    category: process_creation\n    product: windows\ndetection:\n    selection_img:\n        - Image|endswith: '\\schtasks.exe'\n        - OriginalFileName: 'schtasks.exe'\n    selection_cli_delete:\n        CommandLine|contains|windash: '/delete'\n    selection_cli_task:\n        CommandLine|contains:\n            # Add more important tasks\n            - '\\Windows\\BitLocker'\n            - '\\Windows\\ExploitGuard'\n            - '\\Windows\\SystemRestore\\SR'\n            - '\\Windows\\UpdateOrchestrator\\'\n            - '\\Windows\\Windows Defender\\'\n            - '\\Windows\\WindowsBackup\\'\n            - '\\Windows\\WindowsUpdate\\'\n    condition: all of selection_*\nfalsepositives:\n    - Unlikely\nlevel: high\nregression_tests_path: regression_data/rules/windows/process_creation/proc_creation_win_schtasks_delete/info.yml\n","validation":"yaml_parsed_not_backend_compiled_or_live_validated","techniques":[{"key":"enterprise/T1489","id":"T1489","name":"Service Stop","page":"techniques/enterprise/T1489/"}],"data_path":"data/detection-rules/dbc1f800-0fe0-4bc0-9c66-292c2abe3f78.json","kind":"sigma"}