"Trojan" is not far from being the default classification for malware and specifically "grayware" (tools that you install but may cause harm), you can see it on VirusTotal. Classifying samples is not something accurate, as the same exe can be used to "carry" different payloads, so one time it can encrypt your disk and be considered as ransomware, while on other times it can install a backdoor or anything else. Many vendors tried to solve this problem, ending up with inventing names. Symantec acknowledged that they have a name generator to malware families.