Posts Tagged: Crossrider

May 12

Adware Stages Comeback Via Browser Extensions

The Wikimedia Foundation last week warned that readers who are seeing ads on Wikipedia articles are likely using a Web browser that has been infected with malware. The warning points to an apparent resurgence in adware and spyware that is being delivered via cleverly disguised browser extensions designed to run across multiple Web browsers and operating systems.

An ad served by IWantThis! browser extension. Source: Wikimedia

In a posting on its blog, Wikimedia noted that although the nonprofit organization is funded by more than a million donors and does not run ads, some users were complaining of seeing ads on Wikipedia entries. “If you’re seeing advertisements for a for-profit industry (see screenshot below for an example) or anything but our fundraiser, then your web browser has likely been infected with malware,” reads a blog post co-written by Philippe Beaudette, director of community advocacy at the Wikimedia Foundation.

The blog post named one example of a browser extension called “IWantThis!,” which is essentially spyware masquerading as adware. The description at the IWantThis! Web site makes it sound like a harmless plugin that occasionally overlays ads on third-party Web sites and helps users share product or online shopping wish lists with others. As I was researching this extension, I came across this helpful description of it at the DeleteMalware Blog, which points to the broad privacy policy that ships with this extension:

Examples of the information we may collect and analyze when you use our website include the IP address used to connect your computer to the Internet; login; e-mail address; password; computer and connection information such as browser type, version, and time zone setting, browser plug-in types and versions, operating system, and platform; the full Uniform Resource Locator (URL) clickstream to, through, and from the Site, including date and time; cookie; web pages you viewed or searched for; and the phone number you used to call us. Continue reading →

May 12

Facebook Takes Aim at Cross-Browser ‘LilyJade’ Worm

Facebook is attempting to nip in the bud a new social networking worm that spreads via an application built to run seamlessly as a plugin across multiple browsers and operating systems. In an odd twist, the author of the program is doing little to hide his identity, and claims that his “users” actually gain a security benefit from installing the software.

At issue is a program that the author calls “LilyJade,” a browser plugin that uses Crossrider, an emerging programming framework designed to simplify the process of writing plugins that will run on Google ChromeInternet Explorer, and Mozilla Firefox.  The plugin spreads by posting a link to a video on a user’s Facebook wall, and friends who follow the link are told they need to accept the installation of the plugin in order to view the video. Users who install LilyJade will have their accounts modified to periodically post links that help pimp the program.

The goal of LilyJade is to substitute code that specifies who should get paid when users click on ads that run on top Internet properties, such as,,,, and In short, the plugin allows customers to swap in their own ads on virtually any site that users visit.

I first read about LilyJade in an analysis published earlier this month by Russian security firm Kaspersky Labs, and quickly recognized the background from the screenshot included in that writeup as belonging to user from This is a relatively open online hacking community that is often derided by more elite and established underground forums because it has more than its share of adolescent, novice hackers (a.k.a. “script kiddies”) who are eager to break onto the scene, impress peers, and make money.

It turns out that the Hackforums user who is selling this plugin is doing so openly using his real name. Phoenix, Ariz. based hacker Dru Mundorff sells the LilyJade plugin for $1,000 to fellow Hackforums members. Mundorff, 29, says he isn’t worried about the legalities of his offering; he’s even had his attorney sign off on the terms of service that each user is required to agree to before installing it.

“We’re not forcing any users to be bypassed, exploited or anything like that,” Mundorff said in a phone interview.  “At that point, if they do agree, it will allow us to make posts on their wall through our system.”

Mundorff claims his software is actually a benefit to Facebook and the Internet community at large because it is designed to also remove infections from some of the more popular bot and Trojan programs currently for sale on Hackforums, including Darkcomet, Cybergate, Blackshades and Andromeda (the latter being a competitor to the password-stealing ZeuS Trojan that hides behind Facebook comments). Mundorff maintains that his plugin will result in a positive experience for the average Facebook user, although he acknowledges that customers who purchase LilyJade can modify at will the link that “users” are forced to spread, and may at any time swap in links to malware or exploit sites. Continue reading →