Sigma rule: Delete All Scheduled Tasks

A detection rule from the SigmaHQ repository, shown as its author published it. Dataset version ref-2b69a53edf5c, updated 2022-09-09T00:00:00.000Z.

Rule

Title
Delete All Scheduled Tasks
Status
test
Level
high
Author
Nasreddine Bencherchali (Nextron Systems)
Date
2022-09-09
File
rules/windows/process_creation/proc_creation_win_schtasks_delete_all.yml
Commit
ccbb0369507f796db0b0ae6854c8a2be471b9d84

Detects the usage of schtasks with the delete flag and the asterisk symbol to delete all tasks from the schedule of the local computer, including tasks scheduled by other users.

Log source

product
windows
category
process_creation

Detection

selection:
    Image|endswith: '\schtasks.exe'
    CommandLine|contains|all:
        - ' /delete '
        - '/tn \*'
        - ' /f'
condition: selection

False positives (as the rule lists them)

  • Unlikely

Tags

  • attack.impact
  • attack.t1489

MITRE ATT&CK ids this rule names

References

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/process_creation/proc_creation_win_schtasks_delete_all.yml

Sources and licences

  • SigmaHQ

    "Delete All Scheduled Tasks" by Nasreddine Bencherchali (Nextron Systems) (SigmaHQ). Rule: https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules/windows/process_creation/proc_creation_win_schtasks_delete_all.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: Delete All Scheduled Tasks",
entity page, dataset version ref-2b69a53edf5c, updated 2022-09-09T00:00:00.000Z,
https://ransomware-tracker.com/detections/sigma/220457c1-1c9f-4c2e-afe6-9598926222c1 (accessed 2026-11-03).
Underlying source: SigmaHQ rule 220457c1-1c9f-4c2e-afe6-9598926222c1, 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.