What’s llvm-lib.exe? Is it safe or a virus?

llvm-lib.exe from Intel Corporation is a compiler/toolchain helper executable tied to LLVM-based development tools that Intel includes in its oneAPI / C++ developer toolkits. It implements the llvm-lib command, which is compatible with the Microsoft lib.exe library-creation tool but works in the LLVM ecosystem to produce or manipulate static libraries and symbol tables during compile/link workflows. LLVM is the underlying compiler framework used for building and optimizing code in modern toolchains.

You might have it because Intel’s developer tools (such as the Intel C++ Compiler or oneAPI toolkits) were installed on your PC, and these include LLVM-based components for compiling and linking code as part of software development.

Below are 4 simple steps you can take to see if the llvm-lib.exe process is safe or malware.

Researched by Carl @ SpyShelter Labs

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More about llvm-lib.exe on WINDOWS

Who makes llvm-lib.exe?

We’ve found Intel Corporation should be the publisher of llvm-lib.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.

What does it mean if someone is the publisher of a PC .exe (executable or process)?

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.

Last updated: January 6, 2026

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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.

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