Trojans are one of the few types of malware that don’t spread on their own. The most popular family of trojans today are the so-called Banker trojan. Sophos has seen so many variants that it’s gone through the alphabet three times with Banker Trojan. Security experts say the bigger issue is their increasing sophistication in stealing data. Attackers are taking advantage of zero-day attacks like the latest Microsoft Patch-day exploits like the VML bug.”]
Source: https://www.darkreading.com/analytics/most-popular-trojans