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msbuild.exe

msbuild.exe is Microsoft's build engine for .NET and Visual Studio projects. It processes XML project files to coordinate the building of applications. Attackers can abuse msbuild.exe to execute malicious code by creating specially crafted XML project files that contain inline C# or other .NET code.

windows cli MOTW UAC

Fix Windows Media Player

Try Example
MOTW

Your Windows Media Player components need to be repaired. Follow these steps to fix playback issues:

  1. Press Win-R on your keyboard

  2. Type msbuild and press Enter

  3. Press Ctrl-V to paste the repair configuration

  4. Press Enter to execute

References:

Mitigations:

  • Restrict msbuild.exe execution through application control

  • Monitor for suspicious msbuild.exe command lines

  • Never run commands from untrusted sources

  • Be suspicious of requests to fix media components via command line

Contributor: Michael Haag (2025-09-09)

Update .NET Framework

Try Example
UAC

Your .NET Framework needs critical updates. Apply this fix to ensure proper application functionality:

  1. Press Win on your keyboard

  2. Type msbuild and press Ctrl+Shift+Enter

  3. Click Yes when prompted

  4. Press Ctrl-V to paste the update configuration

  5. Press Enter to execute

References:

Mitigations:

  • Restrict msbuild.exe execution through application control

  • Monitor for suspicious msbuild.exe command lines

  • Never run commands from untrusted sources

  • Always update .NET Framework through Windows Update or official Microsoft installers

Contributor: Michael Haag (2025-09-09)