Possible DLL Sideloading Of Non-Existent DLLs From System Folders (via image_load)

This rule detects loading of specific system DLL files that are usually not present on the system (or at least not in system directories) but may be loaded by legitimate processes, potentially suggesting phantom DLL hijacking attempts. Phantom DLL hijacking involves placing hostile DLLs with names of non-existent system binaries in locations where legitimate applications may search for them, leading to execution of the hostile DLLs.

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.