After submitting the file to Virustotal and analyzing the results, I can quite confidently say that this poses no security risks.
Also, for anyone having resolution issues with this game, I found a way to fix it! First, you need to download a software application called 'Borderless Gaming', which allows you to force any game into borderless windowed mode. Then open Veashelletz, and in the Options menu turn off fullscreen. Finally, use Borderless Gaming to make the application borderless. It automatically makes the game go fullscreen with much better scaling and without actually changing your screen resolution!