There was an interesting talk on the BBC yesterday on the recent internet ransom attacks. I didn't hear the talk myself but a friend told me about it. One of the interviewees was from Europol's European Cybercrime Centre and he recommended their website
https://www.nomoreransom.org/about-the-project.html
which has decryption tools for a number of recent viruses.
Could be useful.
John
John Weller 01380 723235 07976 393631