PandaLabs has reported a sophisticated ?chain? attack, perpetrated through the SpamNet.A Trojan, discovered on a web page hosted on a server in the USA, with a domain registered from an address in Moscow. The attack is highly complex, using a tree structure to infect with up to 19 species of malware. Its principal goal is to send out junk mail, and, by using this complex structure, has so far compiled more than 3 million email addresses worldwide. Panda Software has contacted the companies that host the files and web pages that are the main part of this organized attack.



The infection chain begins when a user visits the web page mentioned above. This web page uses the Iframe tag to try to open two new pages. This initiates two parallel processes, each one associated to one of the two pages