The Clop Ransomware continues to evolve with a new and integrated process killer that targets some interesting processes belonging to Windows 10 apps, text editors, programming IDEs and languages, and office applications. The ransom note had also changed to indicate that the attackers were targeting an entire network rather than individual PCs. In late December 2019 a new Clop variant was discovered by MalwareHunterTeam and reverse engineered by Vitali Kremez that add improves their process termination feature; Clop now terminates 663 Windows processes before encrypting files.
Source: https://www.bleepingcomputer.com/news/security/clop-ransomware-now-kills-windows-10-apps-and-3rd-party-tools/