An analysis of botnet activity in the first six months of 2018 shows that multifunctional malware tools are becoming increasingly popular among attackers. Multi-purpose malware allows bot owners to quickly adapt their network for different purposes: from delivering spam, for instance, to distributing banking Trojans and ransomware. One factor driving the trend is the relatively high costs of operating a botnet, says Alexander Eremin, security expert at Kaspersky Lab. The emergence of multi-purpose tools means that users need powerful protection as criminals try to steal users credentials, money, sensitive data, using the same malware sample.”]
Source: https://www.darkreading.com/attacks-breaches/botnets-serving-up-more-multipurpose-malware