From 2-spyware.com
CovidWorldCry ransomware, otherwise known as BigLock or CoronaLock, is a data locking virus that was first spotted by security researcher GrujaRS[1] in late May 2020 and has not been attributed to any previously-known malware family. It uses ChaCha + AES encryption algorithms to lock all pictures, music, videos, documents, databases, and other personal files on the infected machine and its networks. It then demands a ransom in Bitcoin for the data release, which is only possible with a ransomware decryption tool in hackers’ possession.