Cutwail botnet is found is 2007 which sends spam e-mails. Trojan component called Pushdo which helps to install the bot on the infected machine. The target of this malware is Microsoft windows. As per record, it is calculated that cutwail botnet was the one which affected large number of computers by June 2009. Cutwail Botnet is also known as “0bulk Psyche Evolution” in the underground market.
It is calculated that Pushdo variant has affected about 11,000 computers all over the world in 24 hours according to Bitdefender. Pushdo Trojan helps in distributing malware and it is found that the latest pushdo adds encryption and it is also found the public and private keys are changed in the communication between Command Control and the bot communication. Domain-generation algorithm is used with the change in communication methods, results to the cyber criminals on taking advantage to overcome blacklisting domain names. it is calculated that 11,000 unique IPs to connect from different countries all over the world in which Vietnam, India and much more listed by Bitdefender blog.
What do you think about this attack on 11000 computers in 24 hours?