Avaddon ransomware, which translates to Abaddon, meaning doom or destruction. It encrypts user data using AES-256 + RSA-2048, and then requires a ransom of $150 to $350 or more in BTC in order to return the files. Avaddon which translates to Abaddon, Angel of the Abyss, commanding the legions of locusts. "Avaddon" in Hebrew means "place of death" or "depth of hell." Mentioned in various literary works.
It spread via malspam the theme for these messages is very simple. All contain various subject lines that attempt to entice the recipient to open a "photo" along with a wink emoji in the body of the email.