You're referring to a rather old and somewhat notorious tool in the tech community. The Microsoft Toolkit, specifically version 2.5 Beta 5, was widely known for its capabilities in activating various Microsoft products, including Windows 8.1 and Office, without the need for legitimate licenses.
Description: Microsoft Toolkit 2.5 Beta 5 is an official activator tool designed to activate Windows 8.1 and Microsoft Office products. This tool provides a simple and efficient way to activate your Windows 8.1 and Office installations, ensuring you have access to all the features and updates. You're referring to a rather old and somewhat
You do not need to risk your cybersecurity or break the law to use Windows and Microsoft Office. There are several safe, affordable, and legal ways to get fully functional software. Free and Low-Cost Options for Microsoft Office Download & Extract: Obtain the archive
System Tools: Includes functions for backing up activation licenses and restoring them after a system re-installation. Run as Administrator. Without admin rights
Legal Implications of Using Activator Tools for Windows - YTU
.exe that is not named Microsoft Toolkit.exe, delete it immediately. The real binary is typically 40-50MB.