Decryption keys for Egregor, Sekhmet and Maze shared by someone claiming to be the developer of all three malware.
The keys were published in BleepingComputer forum. As stated in the forum post, this was a planned leak and is not related to the recent law enforcement against attackers. Again, according to the post, none of their team members will ever return to ransomware attacks and the source code of the malware has been destroyed.
The post was containing a link to download a 7zip file with four archives containing the Maze, Egregor and Sekhmet decryption keys, as well as the source code for the M0yv malware used by the operators. However, because of being malicious, the link removed from post. It may be possible to contact to get them again.
Meanwhile, some experts corrected the decryption keys’ performance.