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What’s oscdimg_amd64.exe (Microsoft CD/DVD Premastering Utility)? Is it safe or a virus?

The `oscdimg_amd64.exe` tool by Microsoft Corporation, described as the "Microsoft CD/DVD Premastering Utility," is a command-line utility used to create ISO image files. It is typically employed by system administrators and IT professionals to generate ISO images with precise control over file placement, boot sectors, and file systems such as UDF, Joliet, or ISO 9660. This tool is commonly used for creating bootable media, such as installation disks for operating systems or software packages. Its flexibility allows customization, making it valuable for tasks like deploying Windows installations or distributing standardized software environments.

Researched by Carl @ SpyShelter Labs

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A Trojan is a harmful software that pretends to be a legitimate program or file to deceive users into downloading it. It can steal personal information, damage files, or give hackers control over the infected device.

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More about oscdimg_amd64.exe on WINDOWS

Who makes oscdimg_amd64.exe (Microsoft CD/DVD Premastering Utility)?

We’ve found Microsoft Corporation should be the publisher of oscdimg_amd64.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: October 7, 2025

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Why should you trust us?

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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