Risk Your PC's Health for a Song?
A reader initially alerted PC World to an ad-laden Windows Media Audio file, titled "Alicia Keys Fallin' Songs In A Minor 4.wma." We then found two other WMA files and two Windows Media Video files that had been similarly modified.
Using a packet analysis tool called Etherpeek, we determined that each media file loaded a page served by a company called Overpeer (owned by Loudeye). That page set off a chain of events that led to the creation of several Internet Explorer windows, each containing a different ad or adware.
Morgenstern characterized Overpeer's actions as just deserts for people who illegally trade copyrighted works for free. "Remember, the people who receive something like (the ad-laden media files), in some cases, were on P-to-P, and they were trying to get illicit files," he says.
When we played the modified files, the License Acquisition dialog box showed a page containing ads and quickly spawned more IE windows, each containing a different ad.
Not only did we get bombarded with unwanted ads, but one of the ad windows in a video file tried to install adware onto our test PC surreptitiously, while another added items to our browser's Favorites list and attempted to change our home page. And a window from the original music file asked to download a file called lyrics.zip, which contained the installer for 180search Assistant, commonly categorized as an adware program.