This one's named HDDCryptor (or Mamba), and has been around since January 2016, according to a Bleeping Computer forum topic where users reported their infections.
Technically, HDDCryptor was around before the overhyped Petya, and later Satana ransomware families, which got a lot more media attention, and behaved in the same way, by rewriting the MBR and preventing the PC from booting.
"New wave of HDDCryptor infections"
Based on available reports, it appears that a recent malware distribution campaign has been delivering a new version of HDDCryptor to users around the world.
http://news.softpedia.com/news/hddcryptor-ransomware-locks-hard-drive-boot-records-508427.shtml
