If you do get infected with BanLian ransomware Avast may have a quicker answer for you, rather than using your ransomware resilient back-up – a free decryptor:
Beating BanLian ransomware with decryption • The Register
Obviously the are caveats, you have to be infected with the exact strain of ransomware and it will not work on other ransomware versions, but, if you are lucky, it may save you some time. It will not solve the ransomware issue of the threat actors posting stolen information into the public domain or Dark Web.
But you also need good planning and preparation.
Clive Catton MSc (Cyber Security) – by-line and other articles