Malware in this family is distributed by criminals with the help of the Pushdo Trojan downloader. Criminals use malware in the Trojan.Win32.Cutwail family to create botnets (networks of infected computers that are controlled by a “master”) and send spam from these computers.
Geographical distribution of attacks by the Trojan.Win32.Cutwail family
Geographical distribution of detections during the period from 24 July 2014 to 27 July 2015
Top 10 countries with most attacked users (% of total attacks)
* Percentage of all unique Kaspersky users attacked by this malware