HelloKitty ransomware which became headlines for mounting attack on video game developer CD Projekt Red. It is primarily known for targeting Windows systems, but it is now targeting VMware ESXi servers.
A new variant of eCh0raix ransomware is found to be encrypting not only QNAP but Synology network-attached storage (NAS) too.
BlackMatter Ransomware Linux variant that is caught targeting VMware ESXi servers. VMware ESXi is the most used virtual machine platform. Almost all major companies use it.
REvil Ransomware has now a new tentacle for Linux machines. It is caught encrypting Vmware ESXi virtual machine. Linux variant has almost same functionality as of its Windows counterpart.
AgeLocker use AGE (Actually Good Encryption) algorithm for encrypting victims files on QNAP servers, hence the name AgeLocker. It uses X25519, ChaChar20-Poly1305, and HMAC-SHA256 algorithms which makes it a very secure method to encrypt files.