InstallFix SysWOW64 PowerShell Encoded Command
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About the rule
Rule Type
Standard
Rule Description
Detects 32-bit SysWOW64 PowerShell with encoded command from cmd.exe - InstallFix AMSI bypass loader.
Severity
Critical
Rule Requirement
Criteria
Action1:
actionname = "Process started" AND ( PROCESSNAME contains "SysWOW64\WindowsPowerShell" AND ( COMMANDLINE contains " -E " OR COMMANDLINE contains " -e " OR COMMANDLINE contains "-EncodedCommand" ) AND PARENTPROCESSNAME endswith "\cmd.exe" )
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
