MalwareHunterTeam has found two new in-development ransomware programs for both Minecraft and Counter-Strike: Global Offensive. Neither of these programs actually encrypt any files on the computer. Instead they just display a Window that waits for a particular game related program to launch. The first one is MC Ransomware, which we expect will force a user to play Minecraft in order to decrypt their files if encryption functionality is ever added. The second variant is called CSGO and it waits for an executable that contains the string “csgo”” to be executed.”
Source: https://www.bleepingcomputer.com/news/security/minecraft-and-cs-go-ransomware-strive-for-media-attention/