Recorded Future’s Insikt Group analyzed over 3.9 million posts on underground hacker and malware forums. Ransomware was the most discussed malware category, followed by Crypters, and Trojans. GandCrab was the only ransomware family to make it into the top 10 discussed malware. The report notes that attackers are still using malware and attack methods that have been around for years and that should be easily blocked. These tools and methods, though, continue to be discussed as they are still generating victims for the attackers.
Source: https://www.bleepingcomputer.com/news/security/ransomware-most-popular-malware-in-underground-forums/