A new ransomware was discovered this week by MalwareHunterTeam called Zenis Ransomware. It is currently unknown how Zenis is being distributed, but multiple victims have already been infected. The latest version of Zenis uses AES encryption to encrypt the files. It does this by scanning the drives on the computer for files with certain extensions. If it finds a file that matches one of the following extensions, it will encrypt it using a different encryption key for each file. It will then begin to get the ransom note ready by filling in some information such as emails and encrypted data.
Source: https://www.bleepingcomputer.com/news/security/zenis-ransomware-encrypts-your-data-and-deletes-your-backups/