Spam Tripled In A Week Thanks To Szirbi Botnet

The most common campaign Srizbi is using at present is a ‘stupid’ theme that tries to hook users by including the first part of their email address in the subject line along with the suggestion that they look stupid in a video. Users are often quick to investigate the potentially embarrassing footage before they consider the true malicious nature of the message.

Another recent campaign from Srizbi is based on the social networking phenomenon of connecting to old acquaintances online. It targets the Classmate.com service by using its name in malicious spam with subject lines such as “You have one new message. Classmates” and “Friends waiting for you Tomorrow! Classmates”. Once the recipient clicks on the link, they are taken to a fake page that resembles the actual Classmates.com website where they are directed to run a supposed Flash video player. When users click on the link, they are prompted to download an executable file that infects their computer.