Sigma rule: Suspicious Scheduled Task Write to System32 Tasks

A detection rule from the SigmaHQ repository, shown as its author published it. Dataset version ref-6369b9bb8af5, updated 2022-01-12T00:00:00.000Z.

Rule

Title
Suspicious Scheduled Task Write to System32 Tasks
Status
test
Level
high
Author
Florian Roth (Nextron Systems)
Date
2021-11-16
Modified
2022-01-12
File
rules/windows/file/file_event/file_event_win_susp_task_write.yml
Commit
ccbb0369507f796db0b0ae6854c8a2be471b9d84

Detects the creation of tasks from processes executed from suspicious locations

Log source

product
windows
category
file_event

Detection

selection:
    TargetFilename|contains: '\Windows\System32\Tasks'
    Image|contains:
        - '\AppData\'
        - 'C:\PerfLogs'
        - '\Windows\System32\config\systemprofile'
condition: selection

False positives (as the rule lists them)

  • Unknown

Tags

  • attack.privilege-escalation
  • attack.persistence
  • attack.execution
  • attack.t1053

MITRE ATT&CK ids this rule names

References

  • Internal Research

Read on 2026-11-03T00:58:21.399Z under licence sigma-drl-1.1@d5f4c36a from https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules/windows/file/file_event/file_event_win_susp_task_write.yml

Sources and licences

  • SigmaHQ

    "Suspicious Scheduled Task Write to System32 Tasks" by Florian Roth (Nextron Systems) (SigmaHQ). Rule: https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules/windows/file/file_event/file_event_win_susp_task_write.yml.
    Licensed under the Detection Rule License (DRL) 1.1: https://github.com/SigmaHQ/Detection-Rule-License

    Detection Rule License (DRL) 1.1

Cite this page

Dragons Eye Ransomware Tracker, "Sigma rule: Suspicious Scheduled Task Write to System32 Tasks",
entity page, dataset version ref-6369b9bb8af5, updated 2022-01-12T00:00:00.000Z,
https://ransomware-tracker.com/detections/sigma/80e1f67a-4596-4351-98f5-a9c3efabac95 (accessed 2026-11-03).
Underlying source: SigmaHQ rule 80e1f67a-4596-4351-98f5-a9c3efabac95, commit ccbb0369507f796db0b0ae6854c8a2be471b9d84.

Pages change. The dataset version identifies the data, but no archive of old versions is kept, so this citation cannot be replayed later.