from Securelist - Information about Viruses, Hackers and Spam
A family of ransomware Trojans emerged in late 2014/early 2015, and quickly established itself among the top three most widespread encryptors. This threat has been assigned the verdict Trojan-Ransom.Win32.Shade according to Kaspersky Lab's classification. The original name given to the encryptor by its creator is not known.