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MySpace worm uses QuickTime for exploit
- — 05 December, 2006 08:44
The social networking site MySpace.com is under what one computer security analyst calls an "amazingly virulent" attack caused by a worm that steals log-in credentials and spreads spam that promotes adware sites.
The worm is infecting MySpace profiles with such efficiency that an informal scan of 150 found that close to a third were infected, said Christopher Boyd, security research manager at FaceTime Communications Inc.
MySpace, owned by News Corp., is estimated to have at least 73 million registered users.
The worm works by using a cross-scripting weakness found around two weeks ago in MySpace and a feature within Apple Computer Inc.'s QuickTime multimedia player.
If an option in the bogus menu is clicked, the user is directed to a fake log-in page hosted on another server where the person's log-in details are captured.
Websense has posted a screenshot of the fake log-in page.
MySpace's "seemingly random tendency" to expire user sessions or log out users makes it less noticeable to victims that an attack is under way, according to a Nov. 16 advisory by the Computer Academic Underground.
Additionally, the worm places an embedded QuickTime movie on the user's profile, which will then repeat the infection process for anyone who visits the profile.
The worm has another malicious function. Once a profile is infected, the worm sends spam to other people in the user's contact list.
Those spam messages contain a file that appears to be a movie but instead is a link to a pornographic site that also hosts adware from Zango Inc., Boyd said. Zango, formerly 180 Solutions Inc., settled last month with the U.S. Federal Trade Commission for US$3 million over complaints it didn't properly ask the consent of users before its adware was installed.
While some of the Web sites hosting the malicious QuickTime movie have been taken down, others have appeared, Boyd said.
The Firefox 2.0 browser was flagging some of the bogus log-in sites as phishing sites, Boyd said. However, phishing sites can be active for several hours before they are flagged, he said.
MySpace officials couldn't immediately comment.