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Unit 42's Blinder Tunnel write-up reads like a LOL checklist.

Fake Dubai Airports dev job, a "coding challenge" Visual Studio project, and MSBuild runs the payload in the background while the target is still reading the README.

Already tracked:
MSBuild running .csproj tasks, on LOLBAS: https://lolbas-project.github.io/lolbas/Binaries/Msbuild/
Chisel for the tunnel (wrapped in-memory as "Blackwood"), on LOTTunnels: https://lottunnels.github.io/lottunnels/Binaries/chisel/

LOLBASMsbuild on LOLBASMsbuild.exe is a living-of-the-land file containing unexpected functionality that can be abused by attackers; this page lists all its use cases.
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Oct 19, 2026 · 18:56 UTC

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Not tracked: Microsoft's signed vshost.exe / vshost32.exe, renamed RuntimeBroker.exe, plus a .exe.config AppDomainManager hijack (with ETW turned off) to load RuntimeBroker.dll and Blackwood.dll. It is .config-based, not search order, so maybe not a HijackLibs fit, but it is worth tracking somewhere.

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