: Copy the downloaded file to your portable drive.
Steps to that the scanner misses
Malwarebytes Portable is a powerful, no-install version of the popular Malwarebytes security software designed to scan and clean infected computers directly from a USB drive or external storage. While Malwarebytes does not offer a traditional consumer-facing portable app, it provides a specialized tool known as the Malwarebytes Support Tool and a professional-grade version called Malwarebytes Techbench for this specific purpose. malwarebyte portable
While Malwarebytes does not offer a traditional "Portable Edition" in the way many software utilities do (where you download a single .exe and run it from a thumb drive), they provide a specific tool called and the Malwarebytes Support Tool that serve the same purpose. Why a "Portable" Version Matters : Copy the downloaded file to your portable drive