Delete Important Scheduled Task
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About the rule
Rule Type
Standard
Rule Description
Detects when adversaries stop services or processes by deleting their respective scheduled tasks in order to conduct data destructive activities
Severity
Trouble
Rule Requirement
Criteria
Action1: actionname = "Process started" AND PROCESSNAME endswith "\schtasks.exe" AND (COMMANDLINE contains "/delete" AND COMMANDLINE contains "/tn") AND COMMANDLINE contains "\Windows\BitLocker,\Windows\ExploitGuard,\Windows\SystemRestore\SR,\Windows\UpdateOrchestrator\,\Windows\Windows Defender\,\Windows\WindowsBackup\,\Windows\WindowsUpdate" select Action1.HOSTNAME,Action1.MESSAGE,Action1.COMMANDLINE,Action1.FILE_NAME,Action1.PROCESSNAME,Action1.USERNAME,Action1.PARENTPROCESSNAME
Detection
Execution Mode
realtime
Log Sources
Windows
Author
Nasreddine Bencherchali (Nextron Systems)
