So you know the usual infection vector. https://www.tomsguide.com/us/bad-rabbit-ransomware-what-to-do,news-26038.html covers a little more.
There are folk that worry endlessly and they can't be helped. Since this is a PC, YOU MUST DECIDE to not install those fake players. If you decide to install malware, that is your choice as not all antivirus apps will stop you.
Does anyone know how to tell me how Bad Rabbit manifests itself in AVG and has already manifested itself?