Searching for "Kaspersky keys" on GitHub typically reveals three types of results: official API integration tools, security research regarding leaked credentials, and unofficial "crack" repositories.
You download a reset_trial.bat script from GitHub and run it as Administrator (because the instructions told you to). You are now executing arbitrary code from a stranger on the internet with full system privileges. That script could: kaspersky keys github
Scripts designed to wipe registry entries and local data, tricking the software into allowing a new 30-day trial period. Searching for "Kaspersky keys" on GitHub typically reveals