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.