MinifilterHook
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silence file system monitoring components by hooking their minifilters
MinifilterHook
Silence file system monitoring components by hooking their minifilters
Tested on Windows 10 1903, 21H2 and 22H2 against WdFilter
POC can be easily modified to target other filter drivers -> simply change TARGET_FILTER_NAME and TARGET_FILTER_DRIVER
Usage:
Install .inf file -> right click + install or use SetupApi to install programtically
Load WdfltHook.sys -> via an unsigned driver loader like : https://github.com/0mWindyBug/KDP-compatible-driver-loader/tree/main
How it works
See "HowItWorks.pdf" (English) or https://www.digitalwhisper.co.il/files/Zines/0x9C/DW156-2-FilteringMinifilters.pdf (Hebrew)
Demo
Before loading our driver:
After loading our driver:
Notes
- Thanks to @GetRektBoy724 for his contribution
- We restore everything during unload so be aware
- Similar implementation using only a r/w primitive from UM (no driver) has been published & integrated to https://github.com/wavestone-cdt/EDRSandblast