The Avaddon ransomware gang has shut down operation and released decryption keys for victims. BleepingComputer received an anonymous tip pretending to be from the FBI that contained a password and a link to a password-protected ZIP file. Emsisoft has released a free decryptor that all victims can use to recover their files for free. Avaddon launched its operation in June 2020 through a phishing campaign that included a winking smiley. It is not clear why Avaddon shut down, but it was likely caused by increased pressure and scrutiny by law enforcement and governments worldwide.
Source: https://www.bleepingcomputer.com/news/security/avaddon-ransomware-shuts-down-and-releases-decryption-keys/