Sigma rule: Defrag Deactivation - Security

A detection rule from the SigmaHQ repository, shown as its author published it. Dataset version ref-125f094b09aa, updated 2022-11-27T00:00:00.000Z.

Rule

Title
Defrag Deactivation - Security
Status
test
Level
medium
Author
Florian Roth (Nextron Systems), Bartlomiej Czyz (@bczyz1)
Date
2019-03-04
Modified
2022-11-27
File
rules-emerging-threats/2018/TA/Slingshot/win_security_apt_slingshot.yml
Commit
ccbb0369507f796db0b0ae6854c8a2be471b9d84

Detects the deactivation and disabling of the Scheduled defragmentation task as seen by Slingshot APT group

Log source

product
windows
service
security
definition
Requirements: Audit Policy : Audit Other Object Access Events > Success

Detection

selection:
    EventID: 4701
    TaskName: '\Microsoft\Windows\Defrag\ScheduledDefrag'
condition: selection

False positives (as the rule lists them)

  • Unknown

Tags

  • attack.privilege-escalation
  • attack.execution
  • attack.persistence
  • attack.t1053
  • attack.s0111
  • detection.emerging-threats

MITRE ATT&CK ids this rule names

Related rules

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-emerging-threats/2018/TA/Slingshot/win_security_apt_slingshot.yml

Sources and licences

  • SigmaHQ

    "Defrag Deactivation - Security" by Florian Roth (Nextron Systems), Bartlomiej Czyz (@bczyz1) (SigmaHQ). Rule: https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules-emerging-threats/2018/TA/Slingshot/win_security_apt_slingshot.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: Defrag Deactivation - Security",
entity page, dataset version ref-125f094b09aa, updated 2022-11-27T00:00:00.000Z,
https://ransomware-tracker.com/detections/sigma/c5a178bf-9cfb-4340-b584-e4df39b6a3e7 (accessed 2026-11-03).
Underlying source: SigmaHQ rule c5a178bf-9cfb-4340-b584-e4df39b6a3e7, 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.