Have heard that kind of hacking software before, which encrypted all files on my computer, and when my brother have been using the computer (or course carelessly), it is hacked and they demand a 1.2BTC ransom... These are just one more bad news of BTC, and even make my family members have even worse image on bitcoin... And we decided not to pay the coins to the hacker as all important files have been backed up.
Whay do you think?
Dont pay for it i already experience that all my files are lock by ransomeware trojan.. i tried two tools which can resolve your issue.
Try this free tools from kaspersky
https://noransom.kaspersky.com/After scan my computer by that tools all my files are back but the notes for every folder which is saying before you can recover your files you should need to pay to get a private key or password.. Dont pay for it..
also try to update the antivirus do you using or install kaspersky total security and scan the whole computer..