never ever pay to the parasites who spread ransomware!
there is 99.9% chance you will not hear from them after you have sent them money
they do not care about the integrity of your files,all they care for is to get your money
I read stories of people who paid them and didn't get the unlocker or the "code" or whatever to unlock the files,I have yet to hear a single one where you pay and you get your files decrypted
people that work behind that virus must be loyal to users, otherwise their clients (which are the victims) don't pay them because of the fear to lose the money for nothing.
hell, i doubt the devs are anywhere near these guys. It came out, was most likely sold a few times and used many times by the devs and after a few sales, it hit the darkweb and other markets. Once the virus hit the media, I am sure the devs never touched it again. And that is if they ever used it for profit, some of these guys are just trying for proof of concept.