Potential DLL File Download Via PowerShell Invoke-WebRequest
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About the rule
Rule Type
Standard
Rule Description
Detects potential DLL files being downloaded using the PowerShell Invoke-WebRequest or Invoke-RestMethod cmdlets.
Severity
Trouble
Rule Requirement
Criteria
Action1:
actionname = "Process started" AND COMMANDLINE contains "Invoke-RestMethod ,Invoke-WebRequest ,IRM ,IWR " AND (COMMANDLINE contains "http" AND COMMANDLINE contains "OutFile" AND COMMANDLINE contains ".dll")
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
Florian Roth (Nextron Systems), Hieu Tran
