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Gacutil.exe is a command-line tool developed by Microsoft Corporation that is used to install and uninstall assemblies into and from the Global Assembly Cache (GAC) on a Windows computer.
The Global Assembly Cache is a machine-wide repository for sharing assemblies across applications. Using gacutil.exe, developers can easily register and unregister their assemblies in the GAC, making them accessible to all .NET applications running on the machine. This tool is especially useful for managing shared libraries and components that need to be accessed by multiple applications without copying them into each application's directory.
(Researched by Carl @ SpyShelter Labs)
We’ve found Microsoft Corporation should be the publisher of gacutil.exe.
How do we know? Our SpyShelter cybersecurity labs focuses on monitoring different types of Windows PC executables and their behaviors for our popular SpyShelter Antispyware software. Learn more about us, and how our cybersecurity team studies Windows PC executables/processes.
The publisher of an executable is the entity responsible for its distribution and authenticity. Most processes/executables on your PC should be signed. The signature on the executable should have been verified through a third party whose job it is to make sure the entity is who it says it is. Find an unsigned executable? You should consider scanning any completely unsigned .exe on your PC.
Below are 4 simple steps you can take to see if the gacutil.exe process is safe or malware.
Our team at SpyShelter has been studying Windows PC executables for over 15 years, to help fight against spyware, malware, and other threats. SpyShelter has been featured in publications like The Register, PC Magazine, and many others. Now we’re working to share free, actionable, and easy to understand information about Windows executables (processes) with the world, to help as many people as possible keep their devices safe. Learn more about us on our "About SpyShelter” page.