Injected Browser Process Spawning Rundll32 - GuLoader Activity
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About the rule
Rule Type
Standard
Rule Description
Detects the execution of installed GuLoader malware on the host. GuLoader is initiating network connections via the rundll32.exe process that is spawned via a browser parent(injected) process.
Severity
Trouble
Rule Requirement
Criteria
Action1: actionname = "Process started" AND PARENTPROCESSNAME endswith "\chrome.exe,\firefox.exe,\msedge.exe" AND PROCESSNAME endswith "\rundll32.exe" AND COMMANDLINE endswith "\rundll32.exe" select Action1.HOSTNAME,Action1.MESSAGE,Action1.COMMANDLINE,Action1.FILE_NAME,Action1.PROCESSNAME,Action1.USERNAME,Action1.PARENTPROCESSNAME
Detection
Execution Mode
realtime
Log Sources
Windows
Author
@kostastsale
