Registry Modification to Hidden File Extension
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About the rule
Rule Type
Standard
Rule Description
Hides the file extension through modification of the registry
Severity
Trouble
Rule Requirement
Criteria
Action1: actionname = "Registry value modified" AND ((OBJECTNAME endswith "\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\HideFileExt" OR (OBJECTNAME endswith "\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced" AND OBJECTVALUENAME = "HideFileExt")) AND (INFORMATION = "DWORD (0x00000001)" OR (CHANGES = 1 AND NEWTYPE = "REG_DWORD"))) OR ((OBJECTNAME endswith "\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\Hidden" OR (OBJECTNAME endswith "\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced" AND OBJECTVALUENAME = "Hidden")) AND (INFORMATION = "DWORD (0x00000002)" OR (CHANGES = 2 AND NEWTYPE = "REG_DWORD"))) select Action1.HOSTNAME,Action1.MESSAGE,Action1.OBJECTNAME,Action1.PROCESSNAME,Action1.PREVVAL,Action1.CHANGES
Detection
Execution Mode
realtime
Log Sources
Windows
Author
frack113
