Scheduled Task Creation with Curl and PowerShell Execution Combo
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About the rule
Rule Type
Standard
Rule Description
Detects the creation of a scheduled task using schtasks.exe, potentially in combination with curl for downloading payloads and PowerShell for executing them.
Severity
Attention
Rule Requirement
Criteria
Action1:
actionname = "Process started" AND (( PROCESSNAME endswith "\schtasks.exe" OR ORIGINALFILENAME = "schtasks.exe" ) AND ( COMMANDLINE contains " /create " )) AND ( COMMANDLINE contains "curl " AND COMMANDLINE contains "http" AND COMMANDLINE contains "-o" )
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)
