This ransomware encrypts the victim's files with AES-256 and replaces the extension with ".zerofucks". For example, "Chrysanthemum.jpg" would become "Chrysanthemum.zerofucks".
The ransomware screen contains the following text:
All your important files have been encrypted.
If you want your files back, you need to pay €400 in Bitcoins.
After the payment is received, we will give you access to unlock your files.
Click on the Payment button to get more info.
If you don't pay within 48 hours, the price will be doubled.
After another 24 hours, the price will be doubled again.
If you don't pay within 96 hours your files will be destroyed.