Wannacry (WannaCrypt,WanaCrypt0r 2,Wanna Decryptor), A Computer Malware family called Ransomware that actually target the Microsoft Windows Operating systems SMB exploit leaked by the Shadow Broker that encrypting data and demanding ransom payments in the cryptocurrency bitcoin. Russia, Ukraine, India, and Taiwan are the countries which Faced Major Hit by Wanncry. The attack started on 12 May 2017 and Infected more than 3,00,000 computers in over 150 countries.”]
Source: https://gbhackers.com/a-complete-lookback-of-historical-wannacry-ransomware-cyber-attack/