The first new group to appear this month was Haron, and the second is BlackMatter. Both have a taste for deep-pocketed targets and DarkSide-esque virtue-signaling. The first sample of the Haron malware was submitted to VirusTotal on July 19. The South Korean security firm S2W Lab reported on the group in a post that laid out similarities between Haron and Avaddon. Avaddon is yet another prolific ransomware-as-a-service provider that evaporated in June rather than face legal heat.
Source: https://threatpost.com/ransomware-gangs-haron-blackmatter/168212/