: Steam keys are cryptographically secure strings generated by Valve. There is no algorithm that a local .exe can use to "guess" or "create" valid keys.
If you have already executed this file, you should immediately: Steamkeygenchecker.exe
: Use a reputable tool like the Microsoft Defender Offline scan or Malwarebytes from a clean USB drive. : Steam keys are cryptographically secure strings generated
If you'd like, I can help you or explain how to properly secure your Steam account using two-factor authentication. change your passwords for Steam
: Once the system is clean, change your passwords for Steam, email, and banking from a different device.