The wishmaster thing was added as an april fools day prank, it is literally there to trick people. It was added on April 1st and specifically made a jab at people on F95 being into ntr and hating the loli content of the game (despite both of being togglable) in the patch note that added it. I am not aware of it causes any real harm as far as I know it is just meant to spook people but I also hadn't heard of anyone falling for it before you so I can't say for sure.I gotta say, not long after downloading this and clicking the wishmaster9000 .exe someone from Japan (possible VPN user I suppose but def not me) definitely had my password and tried to force their way into my email address but was thankfully stopped by microsoft, which then alerted me and had me change my password. I also recently downloaded The Sims 3 from fitgirlrepacks but accidentally clicked a clone site and downloaded a torrent from there, and that is the only other source of this virus(?) that I can think of.
Hopefully we can get to the bottom of this soon because I love this game and am now too paranoid to play it.
I have to admit those comments seem like they are just semi-innocently trying to troll f95'ers but I figured I should give everyone fair warning that my password was indeed stolen and as far as I can tell there are only two culprits.
Edit: ALSO Wishmaster appeared to do nothing for me except pull up a command prompt window and proceed to vanish before I could see anything. I didn't see any of the intended effects ingame as far as I could tell.
I think in terms of the source of the virus, you using a shady torrent is a far more likely candidate but regardless you should probably do an in depth scan of your PC using your anti virus if you haven't already. If the downloads were shady you may have more virus that got onto your PC without your notice.