Creation of WerFault.exe/Wer.dll in Unusual Folder
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About the rule
Rule Type
Standard
Rule Description
Detects the creation of a file named "WerFault.exe" or "wer.dll" in an uncommon folder, which could be a sign of WerFault DLL hijacking.
Severity
Trouble
Rule Requirement
Criteria
Action1: actionname = "File Created or Modified" AND (FILENAME endswith "\WerFault.exe,\wer.dll" OR OBJECTNAME endswith "\WerFault.exe,\wer.dll") AND (FILENAME notstartswith "C:\Windows\SoftwareDistribution\,C:\Windows\System32\,C:\Windows\SysWOW64\,C:\Windows\WinSxS" AND OBJECTNAME notstartswith "C:\Windows\SoftwareDistribution\,C:\Windows\System32\,C:\Windows\SysWOW64\,C:\Windows\WinSxS") select Action1.HOSTNAME,Action1.MESSAGE,Action1.USERNAME,Action1.DOMAIN,Action1.OBJECTNAME,Action1.FILENAME,Action1.PROCESSNAME
Detection
Execution Mode
realtime
Log Sources
Windows
Author
frack113
