It is not malware, nor is it a "sketchy" program. However, because it is a "hacker-style" utility (containing password removal tools and anti-forensics software), it is often flagged incorrectly by antivirus software.
A lightweight Windows environment that runs in RAM, allowing you to browse files and run portable apps even if the main OS is broken. download medicat iso
If you do not want to build the ISO yourself or need a smaller footprint, the developer offers . This is often distributed as a direct download (via a file host like GoFile) because it is smaller than 4GB. It is not malware, nor is it a "sketchy" program