Yes. It also starts a 100 hour countdown clock at the same time. If the infected user hasn't paid up by the time the clock elapses, the key is thrown away and the files are essentially lost forever.
If the infected user hasn't paid up by the time the clock elapses, the key is thrown away and the files are essentially lost forever.
If the user doesn't have backups, then his files are eventually going to be lost forever, for any one of a number of reasons, most of which are far more likely than being bit by a ransom virus.