This is a false positive from the Anti Virus (which can happen with Windows own defence system too) due to it being an 'unrecognised' file, which means it's a file that either hasn't been run X amount of times on your PC or one that isn't registered in the Anti Virus' "global catalogue" as safe, the latter of which would cost me a sum of money and isn't something I will approach until the game is in a stage to be released.
Right now, unfortunately the best I can do is can assure you that if you download the game here on Itch or on my Patreon, that the file is 100% virus free and that Gamemaker 2 (the engine I use to compile both the exe and zip folder) is safe in that regard.
Hope this helps! ♥