Execution of Possible Remote SquiblyTwo Technique (via process_creation)

This rule detects potential execution of the SquiblyTwo method that abuses Windows Management Instrumentation (WMI) to execute hostile code remotely. This method bypasses application whitelisting by using wmic.exe to process malicious XSL (eXtensible Stylesheet Language) scripts that can contain embedded JScript or VBScript. The attack usually works by fetching XSL content from a remote source (using HTTP/HTTPS) and running it with full trust privileges directly in memory, avoiding disk-based detection mechanisms. This is a common LOLBin (Living Off The Land Binary) method used for defense evasion and code execution.

SigmahighWindowsv1
Full detection rule

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Known false positives

  • Unknown

Detection content is published as a reviewed draft. Tune thresholds and exclusions against your own telemetry before enabling this rule for alerting.