Bofra worm sets trap for unwary
A new family of worms which uses an unpatched vulnerability in Internet Explorer is spreading widely across the net.
Bofra-A poses as photos from an adult webcam in an attempt to fool users into clicking on a link. Clicking on the link causes the targeted PC to run malicious script hosted on a previously infected computer. This exploits the discovered IFRAME vulnerability in IE in an attempt to infect the target computer, as explained here. Once a new system is infected, the worm sets up an embedded web server listening on a port between 1600/TCP and 1700/TCP. Infected PCs establish an IRC session on port 6667/TCP with a variety of public IRC servers, allowing hackers to control compromised machines. The worm also harvests to further its propagation. Unlike standard bulk-mailing worms, Bofra does not send copies of itself within infected email but a HTTP link that points to the host that sent the infected email.
