Sigma rule: Scheduled Tasks Names Used By SVR For GraphicalProton Backdoor - Task Scheduler

A detection rule from the SigmaHQ repository, shown as its author published it. Dataset version ref-a21f47c9205f, updated 2023-12-18T00:00:00.000Z.

Rule

Title
Scheduled Tasks Names Used By SVR For GraphicalProton Backdoor - Task Scheduler
Status
test
Level
high
Author
CISA
Date
2023-12-18
File
rules-emerging-threats/2023/TA/Cozy-Bear/win_taskscheduler_apt_cozy_bear_graphical_proton_task_names.yml
Commit
ccbb0369507f796db0b0ae6854c8a2be471b9d84

Hunts for known SVR-specific scheduled task names

Log source

product
windows
service
taskscheduler
definition
Requirements: The "Microsoft-Windows-TaskScheduler/Operational" is disabled by default and needs to be enabled in order for this detection to trigger

Detection

selection:
    EventID:
        - 129 # Task Created
        - 140 # Task Updated
        - 141 # Task Deleted
    TaskName:
        - '\defender'
        - '\Microsoft\DefenderService'
        - '\Microsoft\Windows\Application Experience\StartupAppTaskCheck'
        - '\Microsoft\Windows\Application Experience\StartupAppTaskCkeck'
        - '\Microsoft\Windows\ATPUpd'
        - '\Microsoft\Windows\Data Integrity Scan\Data Integrity Update'
        - '\Microsoft\Windows\DefenderUPDService'
        - '\Microsoft\Windows\IISUpdateService'
        - '\Microsoft\Windows\Speech\SpeechModelInstallTask'
        - '\Microsoft\Windows\WiMSDFS'
        - '\Microsoft\Windows\Windows Defender\Defender Update Service'
        - '\Microsoft\Windows\Windows Defender\Service Update'
        - '\Microsoft\Windows\Windows Error Reporting\CheckReporting'
        - '\Microsoft\Windows\Windows Error Reporting\SubmitReporting'
        - '\Microsoft\Windows\Windows Filtering Platform\BfeOnServiceStart'
        - '\Microsoft\Windows\WindowsDefenderService'
        - '\Microsoft\Windows\WindowsDefenderService2'
        - '\Microsoft\Windows\WindowsUpdate\Scheduled AutoCheck'
        - '\Microsoft\Windows\WindowsUpdate\Scheduled Check'
        - '\WindowUpdate'
condition: selection

False positives (as the rule lists them)

  • Unknown

Tags

  • attack.persistence
  • detection.emerging-threats

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/2023/TA/Cozy-Bear/win_taskscheduler_apt_cozy_bear_graphical_proton_task_names.yml

Sources and licences

  • SigmaHQ

    "Scheduled Tasks Names Used By SVR For GraphicalProton Backdoor - Task Scheduler" by CISA (SigmaHQ). Rule: https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules-emerging-threats/2023/TA/Cozy-Bear/win_taskscheduler_apt_cozy_bear_graphical_proton_task_names.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: Scheduled Tasks Names Used By SVR For GraphicalProton Backdoor - Task Scheduler",
entity page, dataset version ref-a21f47c9205f, updated 2023-12-18T00:00:00.000Z,
https://ransomware-tracker.com/detections/sigma/2bfc1373-0220-4fbd-8b10-33ddafd2a142 (accessed 2026-11-03).
Underlying source: SigmaHQ rule 2bfc1373-0220-4fbd-8b10-33ddafd2a142, 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.