Sigma Rule Library

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

Hunts for known SVR-specific scheduled task names

View on GitHubOpen raw file

Detection logic

selection

EventID:
  - 129
  - 140
  - 141
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

Raw YAML

title: Scheduled Tasks Names Used By SVR For GraphicalProton Backdoor - Task Scheduler
id: 2bfc1373-0220-4fbd-8b10-33ddafd2a142
related:
    - id: 8fa65166-f463-4fd2-ad4f-1436133c52e1 # Security-Audting Eventlog
      type: similar
status: test
description: Hunts for known SVR-specific scheduled task names
author: CISA
references:
    - https://www.cisa.gov/news-events/cybersecurity-advisories/aa23-347a
date: 2023-12-18
tags:
    - attack.persistence
    - detection.emerging-threats
logsource:
    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
falsepositives:
    - Unknown
level: high

False positives

  • Unknown

References

Related rules