Almost 80% of the malware affecting computer systems in the healthcare industry are trojans, Malwarebytes says. Trojans are the most prevalent category of threats affecting healthcare computer systems. Emotet malware started out as a banking trojan and extended its functionality over the years to distribution services for spam emails or other malware, like TrickBot and QakBot. The typical infection chain begins with a legitimate-looking email that tries to persuade the victim to launch a malicious file. WannaCry malware is in the top five ransomware threats affecting the private and public sector.
Source: https://www.bleepingcomputer.com/news/security/emotet-trojan-is-the-most-prevalent-threat-in-healthcare-systems/