How the Emotet botnet flooded inboxes across Japan
Emotet has evolved into a monetized botnet-as-a-service platform over time, designed to deploy other malware or run campaigns via pay-per-install (PPI) offers, where cybercriminals pay other cybercriminals with a botnet network of infected devices to spread their malware to the already infected devices. Therefore, Emotet's authors strive for the largest possible Emotet botnet.
Republic Of Japan Computer Emergency Response Team Coordination Center Windows Services Manager Mail Shield Japan Emotet Simple Mail Transfer Protocol
Source: securityboulevard.com