Now I have to go pee with all this Peetool talk.
The homepage appears to have a Zbot which pops up a Windows Defender "don't turn off your computer" fake warning. I have seen this on a friends machine. It will try to get you to call a number where the operator will try to get you to let them get rid of the Zeus trojan by getting you to give them access to your computer. The person who answers will pretend to be Microsoft and if they can get you to give them access, they will infect you then charge you to fix it while all the time looking for your banking and password information.
I am surprised this trojan is still there as it is not new. End result is to just leave the site until they fix this. As long as you don't call the number and give them access you should be fine. As far as the integrity of the Pitool software itself, Pimax should comment, but it seems unlikely that the ransomware would be in the Pitool software.
A VM or a recent c: backup would be wise. My friend was freaking and on the phone with the scammers when I arrived. It didn't take long to realize this guy was feeding BS and all I did was hang up on him and restore the computer from a backup I had done on the computer when I built it for my friend. Needless to say he was quite glad I had done this as they had locked him out. I had him restored in 15 minutes.
@PimaxVR @PM_Sean @Pimax-Support @xunshu