{"id":"5b16df71-8615-4f7f-ac9b-6c43c0509e61","title":"Hide Schedule Task Via Index Value Tamper","description":"Detects when the \"index\" value of a scheduled task is modified from the registry\nWhich effectively hides it from any tooling such as \"schtasks /query\" (Read the referenced link for more information about the effects of this technique)\n","author":"Nasreddine Bencherchali (Nextron Systems)","status":"test","level":"high","date":"2022-08-26","modified":"2023-08-17","tags":["attack.defense-impairment","attack.t1685"],"technique_ids":["T1685"],"logsource":{"category":"registry_set","product":"windows"},"falsepositives":["Unlikely"],"references":["https://blog.qualys.com/vulnerabilities-threat-research/2022/06/20/defending-against-scheduled-task-attacks-in-windows-environments"],"source_path":"rules/windows/registry/registry_set/registry_set_hide_scheduled_task_via_index_tamper.yml","source_sha256":"5cdd07e59ded29ee8e2c017e615915c4575c236ad3b08621b52dcf0d05529e27","source_url":"https://github.com/anpa1200/sigma/blob/b249e9683190cffdcaf188ccbfb90bf4759844e1/rules/windows/registry/registry_set/registry_set_hide_scheduled_task_via_index_tamper.yml","license":"Detection Rule License 1.1","license_url":"https://github.com/SigmaHQ/Detection-Rule-License/blob/main/LICENSE.Detection.Rules.md","yaml":"title: Hide Schedule Task Via Index Value Tamper\nid: 5b16df71-8615-4f7f-ac9b-6c43c0509e61\nrelated:\n    - id: acd74772-5f88-45c7-956b-6a7b36c294d2\n      type: similar\n    - id: 526cc8bc-1cdc-48ad-8b26-f19bff969cec\n      type: similar\nstatus: test\ndescription: |\n  Detects when the \"index\" value of a scheduled task is modified from the registry\n  Which effectively hides it from any tooling such as \"schtasks /query\" (Read the referenced link for more information about the effects of this technique)\nreferences:\n    - https://blog.qualys.com/vulnerabilities-threat-research/2022/06/20/defending-against-scheduled-task-attacks-in-windows-environments\nauthor: Nasreddine Bencherchali (Nextron Systems)\ndate: 2022-08-26\nmodified: 2023-08-17\ntags:\n    - attack.defense-impairment\n    - attack.t1685\nlogsource:\n    category: registry_set\n    product: windows\ndetection:\n    selection:\n        TargetObject|contains|all:\n            - '\\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\Schedule\\TaskCache\\Tree\\'\n            - 'Index'\n        Details: DWORD (0x00000000)\n    condition: selection\nfalsepositives:\n    - Unlikely\nlevel: high\n","validation":"yaml_parsed_not_backend_compiled_or_live_validated","techniques":[{"key":"enterprise/T1685","id":"T1685","name":"Disable or Modify Tools","page":"techniques/enterprise/T1685/"}],"data_path":"data/detection-rules/5b16df71-8615-4f7f-ac9b-6c43c0509e61.json","kind":"sigma"}