Suspicious IIS Module Registration
Last updated on:
In this page
About the rule
Rule Type
Standard
Rule Description
Detects a suspicious IIS module registration as described in Microsoft threat report on IIS backdoors
Severity
Trouble
Rule Requirement
Criteria
Action1:
actionname = "Process started" AND PARENTPROCESSNAME endswith "\w3wp.exe" AND (COMMANDLINE contains "appcmd.exe add module" OR (COMMANDLINE contains " system.enterpriseservices.internal.publish" AND PROCESSNAME endswith "\powershell.exe") OR (COMMANDLINE contains "gacutil" AND COMMANDLINE contains " /I"))
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), Microsoft (idea)
