MySpace worm uses QuickTime for exploit

MySpace.com is under attack by an extremely effective worm that steals log-in credentials and spreads spam promoting adware sites.

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.

The exploit starts with a user who visits a MySpace profile infected with an embedded QuickTime movie. The movie loads JavaScript code that overlays a row of menu options on a MySpace profile with a bogus menu.

A QuickTime function, called the HREF track, can direct the player to use JavaScript commands to load Web pages into a browser frame or window.

The JavaScript feature in QuickTime has legitimate uses, "but there are a lot of legitimate uses for technology that can be misused," said Ross Paul, senior product manager with Websense Inc.

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.

Boyd said he's heard anecdotal stories of users removing the worm's JavaScript manually from their profile, but the worm reappears after some time if one of their friend's profiles is infected. Several variants of the worm have also appeared, he said.

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.

Join the PC World newsletter!

Error: Please check your email address.

Our Back to Business guide highlights the best products for you to boost your productivity at home, on the road, at the office, or in the classroom.

Keep up with the latest tech news, reviews and previews by subscribing to the Good Gear Guide newsletter.

Jeremy Kirk

IDG News Service
Show Comments

Essentials

Lexar® JumpDrive® S57 USB 3.0 flash drive

Learn more >

Microsoft L5V-00027 Sculpt Ergonomic Keyboard Desktop

Learn more >

Mobile

Lexar® JumpDrive® S45 USB 3.0 flash drive 

Learn more >

Exec

Lexar® JumpDrive® C20c USB Type-C flash drive 

Learn more >

Audio-Technica ATH-ANC70 Noise Cancelling Headphones

Learn more >

Lexar® Professional 1800x microSDHC™/microSDXC™ UHS-II cards 

Learn more >

HD Pan/Tilt Wi-Fi Camera with Night Vision NC450

Learn more >

Budget

Back To Business Guide

Click for more ›

Most Popular Reviews

Latest News Articles

Resources

PCW Evaluation Team

Azadeh Williams

HP OfficeJet Pro 8730

A smarter way to print for busy small business owners, combining speedy printing with scanning and copying, making it easier to produce high quality documents and images at a touch of a button.

Andrew Grant

HP OfficeJet Pro 8730

I've had a multifunction printer in the office going on 10 years now. It was a neat bit of kit back in the day -- print, copy, scan, fax -- when printing over WiFi felt a bit like magic. It’s seen better days though and an upgrade’s well overdue. This HP OfficeJet Pro 8730 looks like it ticks all the same boxes: print, copy, scan, and fax. (Really? Does anyone fax anything any more? I guess it's good to know the facility’s there, just in case.) Printing over WiFi is more-or- less standard these days.

Ed Dawson

HP OfficeJet Pro 8730

As a freelance writer who is always on the go, I like my technology to be both efficient and effective so I can do my job well. The HP OfficeJet Pro 8730 Inkjet Printer ticks all the boxes in terms of form factor, performance and user interface.

Michael Hargreaves

Windows 10 for Business / Dell XPS 13

I’d happily recommend this touchscreen laptop and Windows 10 as a great way to get serious work done at a desk or on the road.

Aysha Strobbe

Windows 10 / HP Spectre x360

Ultimately, I think the Windows 10 environment is excellent for me as it caters for so many different uses. The inclusion of the Xbox app is also great for when you need some downtime too!

Mark Escubio

Windows 10 / Lenovo Yoga 910

For me, the Xbox Play Anywhere is a great new feature as it allows you to play your current Xbox games with higher resolutions and better graphics without forking out extra cash for another copy. Although available titles are still scarce, but I’m sure it will grow in time.

Featured Content

Latest Jobs

Don’t have an account? Sign up here

Don't have an account? Sign up now

Forgot password?