While KMSAuto Net is technically functional for its intended (and illegal) purpose, the specific file you mentioned is due to its age and naming convention. Using tools like this is the #1 way personal computers become part of a botnet or fall victim to credential theft. Are you trying to resolve a specific activation error, or

The " - Copy" in the filename suggests this is a duplicated file from a secondary source, rather than an original release. This increases the likelihood that someone has modified the contents to include malicious scripts.

Files like this are frequently used as "Trojan horses." Because users expect their antivirus to flag it as a "hacktool" or "riskware," they often disable their protection to run it. This gives real malware (like ransomware or info-stealers) a free pass into your system.

This means it doesn't require a formal installation; it runs directly from the .exe file within the .rar archive.