It is not a virus, malware, or bloatware. It is usually installed automatically by your graphics card manufacturer (NVIDIA, AMD, or Intel) when you update your display drivers.
Because the Vulkan runtime is bundled with your GPU drivers, the safest way to "download" version 1.0.65.1 or newer is to visit your hardware manufacturer's official site and install the latest driver package: Vulkan Run Time Libraries - Download vulkan run time libraries 1.0 65.1 download
Vulkan is a modern (Application Programming Interface) created by the Khronos Group. Similar to DirectX or OpenGL, Vulkan allows video games and heavy graphical applications to communicate directly with your graphics card (GPU). It is not a virus, malware, or bloatware
Then manually check the file version via Properties. It is not a virus