PowerShell Download and Execution Cradles
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About the rule
Rule Type
Standard
Rule Description
Detects PowerShell download and execution cradles.
Severity
Trouble
Rule Requirement
Criteria
Action1: actionname = "Process started" AND COMMANDLINE contains ".DownloadString(,.DownloadFile(,Invoke-WebRequest ,iwr ,Invoke-RestMethod ,irm " AND COMMANDLINE contains ";iex $,| IEX,|IEX ,I`E`X,I`EX,IE`X,iex ,IEX (,IEX(,Invoke-Expression" select Action1.HOSTNAME,Action1.MESSAGE,Action1.COMMANDLINE,Action1.FILE_NAME,Action1.PROCESSNAME,Action1.USERNAME,Action1.PARENTPROCESSNAME
Detection
Execution Mode
realtime
Log Sources
Windows
Author
Florian Roth (Nextron Systems)
