Script Interpreter Execution From Suspicious Folder
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About the rule
Rule Type
Standard
Rule Description
Detects a suspicious script execution in temporary folders or folders accessible by environment variables
Severity
Trouble
Rule Requirement
Criteria
Action1:
actionname = "Process started" AND (PROCESSNAME endswith "\cscript.exe,\mshta.exe,\wscript.exe" OR COMMANDLINE contains " -ep bypass , -ExecutionPolicy bypass , -w hidden ,/e:javascript ,/e:Jscript ,/e:vbscript " OR ORIGINALFILENAME = "cscript.exe,mshta.exe,wscript.exe") AND (COMMANDLINE contains ":\Perflogs\,:\Users\Public\,\AppData\Local\Temp,\AppData\Roaming\Temp,\Temporary Internet,\Windows\Temp" OR ((COMMANDLINE contains ":\Users" AND COMMANDLINE contains "\Favorites") OR (COMMANDLINE contains ":\Users" AND COMMANDLINE contains "\Favourites") OR (COMMANDLINE contains ":\Users" AND COMMANDLINE contains "\Contacts")))
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
Author
Florian Roth (Nextron Systems), Nasreddine Bencherchali (Nextron Systems)
