Elastic medium stable eql

Windows Script Execution from Archive

Identifies attempts to execute Jscript/Vbscript files from an archive file. The use of archives is a common delivery method of malicious scripts.

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Detection Logic

process where host.os.type == "windows" and event.type == "start" and process.name : "wscript.exe" and
 process.parent.name : ("explorer.exe", "winrar.exe", "7zFM.exe") and
 process.args :
        ("?:\\Users\\*\\AppData\\Local\\Temp\\7z*\\*",
         "?:\\Users\\*\\AppData\\Local\\Temp\\*.zip.*\\*",
         "?:\\Users\\*\\AppData\\Local\\Temp\\Rar$*\\*",
         "?:\\Users\\*\\AppData\\Local\\Temp\\Temp?_*\\*",
         "?:\\Users\\*\\AppData\\Local\\Temp\\BNZ.*")

Field Validations

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