Renamed Schtasks Execution

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About the rule

Rule Type

Standard

Rule Description

Detects the execution of renamed schtasks.exe binary, which is a legitimate Windows utility used for scheduling tasks.

Severity

Attention

Rule Requirement

Criteria

Action1: actionname = "Process started" AND (COMMANDLINE contains " /create , /delete , /query , /change , /run , /end " AND COMMANDLINE contains " /tn , /tr , /sc , /st , /ru , /fo " AND COMMANDLINE notcontains "schtasks") OR (ORIGINALFILENAME = "schtasks.exe" AND PROCESSNAME notendswith "\schtasks.exe") select Action1.HOSTNAME,Action1.MESSAGE,Action1.COMMANDLINE,Action1.FILE_NAME,Action1.PROCESSNAME,Action1.USERNAME,Action1.PARENTPROCESSNAME,Action1.DOMAIN,Action1.ORIGINALFILENAME,Action1.PARENTPROCESSID,Action1.PROCESSID,Action1.PRODUCT_NAME,Action1.SECURITYID

Detection

Execution Mode

realtime

Log Sources

Windows

Author

@Swachchhanda Shrawan Poudel (Nextron Systems)