Facebook Worm Strikes Again!
http://www.PCdebugged.info
(WXYZ) - Hey, Facebook fanatics--listen up! A worm that hit the popular social Web site last December has resurfaced, and is now hijacking user accounts -- not only for that social networking service, but also for MySpace, Friendster, LiveJournal and others.
A research project manager with Trend Micro Inc. says the Koobface worm is again making the rounds on Facebook, but this is an improved version with some interesting functions.
Apparently the newest Koobface tries to dupe users into clicking on a link that's included in a message from a friend. Clicking on the link displays a fake error message claiming that Adobe System Inc.'s Flash is out of date, and prompts the user to download an update.
The update is nothing of the sort, but is instead an executable file that installs the Koobface worm.
"Koobface.az," as Trend pegged the worm, rifles through a compromised PC, sniffs out browser cookies associated with 10 different social networking sites, uses the usernames and passwords within those cookies to log on to each service, searches for the infected user's friends, and then sends those people messages that include a link to the worm.
It looks for cookies connected to bebo.com, Facebook, Friendster, fubar.com, hi5.com, LiveJournal, MySpace, myYearbook, Netlog and Tagged.
Trend Micro has identified more than 300 Internet protocol (IP) addresses hosting the worm, and although some have been blocked, others are still online. Those addresses are located in Asia.