As the threat of ransomware becomes more pervasive, bad guys are more than willing to rustle up more of these file-encrypting malware, some in a bid to make a cash cow out of more victims, and others possibly for cybercriminal fame (notoriety).

https://www.trendmicro.com/vinfo/us/security/news/cybercrime-and-digital-threats/ransomware-recap-still-in-development-found-in-the-wild