There is a new ransomware for Macs that has been discovered. It is "poorly coded" in Swift programming language. It encrypts the user's files and demands payment to get your files back. In the end, regardless if you pay or not, your files will not be decrypted.
The ransomware is found in Bit Torrent sites with the name Patcher. It poses as a crack for removing copy protection and licensing systems that are used with popular software like Adobe Premiere Pro and Microsoft Office 2016. It is possible that it is circulating under different names.