https://www.technadu.com/crooks-are-sending-ransomware-disguised-as-coronavirus-test-results/222020/Hackers seem be thriving on the fact that Coronavirus is a very real threat right now.
The threat actors are using a new version of the “Hentai OniChan” ransomware, known as the “King Engine.” Once the user downloads the attachment, the ransomware can extract data from the compromised system.
No freely available tool can decrypt the file for now. Just make sure you check thoroughly before downloading mails from unknown addresses.