{"id":"9ac94dc8-9042-493c-ba45-3b5e7c86b980","title":"Disable Important Scheduled Task","description":"Detects when adversaries stop services or processes by disabling their respective scheduled tasks in order to conduct data destructive activities","author":"frack113, Nasreddine Bencherchali (Nextron Systems), X__Junior","status":"test","level":"high","date":"2021-12-26","modified":"2026-03-11","tags":["attack.impact","attack.t1489"],"technique_ids":["T1489"],"logsource":{"category":"process_creation","product":"windows"},"falsepositives":["Unknown"],"references":["https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1490/T1490.md#atomic-test-8---windows---disable-the-sr-scheduled-task","https://twitter.com/MichalKoczwara/status/1553634816016498688","https://thedfirreport.com/2021/10/18/icedid-to-xinglocker-ransomware-in-24-hours/"],"source_path":"rules/windows/process_creation/proc_creation_win_schtasks_disable.yml","source_sha256":"573d648f6be795572841abd091d620913e4f449f262fe3a1da348a86283c19aa","source_url":"https://github.com/anpa1200/sigma/blob/b249e9683190cffdcaf188ccbfb90bf4759844e1/rules/windows/process_creation/proc_creation_win_schtasks_disable.yml","license":"Detection Rule License 1.1","license_url":"https://github.com/SigmaHQ/Detection-Rule-License/blob/main/LICENSE.Detection.Rules.md","yaml":"title: Disable Important Scheduled Task\nid: 9ac94dc8-9042-493c-ba45-3b5e7c86b980\nrelated:\n    - id: 7595ba94-cf3b-4471-aa03-4f6baa9e5fad # Security-Audting Eventlog\n      type: similar\n    - id: 9e3cb244-bdb8-4632-8c90-6079c8f4f16d # TaskScheduler EventLog\n      type: similar\nstatus: test\ndescription: Detects when adversaries stop services or processes by disabling their respective scheduled tasks in order to conduct data destructive activities\nreferences:\n    - https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1490/T1490.md#atomic-test-8---windows---disable-the-sr-scheduled-task\n    - https://twitter.com/MichalKoczwara/status/1553634816016498688\n    - https://thedfirreport.com/2021/10/18/icedid-to-xinglocker-ransomware-in-24-hours/\nauthor: frack113, Nasreddine Bencherchali (Nextron Systems), X__Junior\ndate: 2021-12-26\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_disable:\n        CommandLine|contains|windash: '/disable'\n    selection_cli_task:\n        CommandLine|contains:\n            # Add more important tasks\n            - '\\Windows\\BitLocker'\n            - '\\Windows\\ExploitGuard'\n            - '\\Windows\\ExploitGuard\\ExploitGuard MDM policy Refresh'\n            - '\\Windows\\SystemRestore\\SR'\n            - '\\Windows\\UpdateOrchestrator\\'\n            - '\\Windows\\Windows Defender\\'\n            - '\\Windows\\WindowsBackup\\'\n            - '\\Windows\\WindowsUpdate\\'\n    condition: all of selection_*\nfalsepositives:\n    - Unknown\nlevel: high\nregression_tests_path: regression_data/rules/windows/process_creation/proc_creation_win_schtasks_disable/info.yml\nsimulation:\n    - type: atomic-red-team\n      name: Windows - Disable the SR scheduled task\n      technique: T1490\n      atomic_guid: 1c68c68d-83a4-4981-974e-8993055fa034\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/9ac94dc8-9042-493c-ba45-3b5e7c86b980.json","kind":"sigma"}