The legitimate vsut64.exe is usually located in a subfolder within C:\Program Files\ViewSonic\ or C:\Program Files (x86)\ . If you find it in C:\Windows\System32 or your Temp folder, it is likely a Trojan.
While it is most commonly linked to ViewSonic, similar naming conventions are occasionally used by other hardware peripheral drivers. In its legitimate form, it ensures your hardware stays compatible with the latest version of Windows. Why is it "Updated" Recently? vsut64exe updated
This often happens after a Windows update or an incomplete software uninstallation. The legitimate vsut64