Potential Defense Evasion via Hidden Files
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About the rule
Rule Type
Standard
Rule Description
Detects the events where the attrib.exe tool is used to hide files on the system.
Severity
Critical
Rule Requirement
Criteria
Action1: actionname = "Process started" AND ((PROCESSNAME endswith "attrib.exe" OR ORIGINALFILENAME contains "attrib") AND (COMMANDLINE notcontains "+R" AND COMMANDLINE notcontains "-R" AND COMMANDLINE notcontains "+S" AND COMMANDLINE notcontains "-S" AND COMMANDLINE notcontains "+A" AND COMMANDLINE notcontains "-A" AND COMMANDLINE notcontains ".cui" AND COMMANDLINE notcontains ".ini") AND (COMMANDLINE contains "+h" OR COMMANDLINE contains "-h")) select Action1.HOSTNAME,Action1.MESSAGE,Action1.COMMANDLINE,Action1.FILE_NAME,Action1.PROCESSNAME,Action1.USERNAME,Action1.PARENTPROCESSNAME
Detection
Execution Mode
realtime
Log Sources
Windows
