According to Michael Gillespie ransomware hunter, we have a big problem, namely the decryptor. Recently, the decryptor has become very popular, which is used as a solution for STOP Djvu infusion, unfortunately instead it exposes victims to further ransomware attacks. It turns out that the software is exceptionally ubiquitous and infects a large group of people every day.

https://www.itproportal.com/news/fake-ransomware-decryptor-installs-additional-ransomware/