722823 - Malicious "Divx" add-on

Status: RESOLVED FIXED

(Toolkit :: Blocklist Policy Requests, defect)

Description

[MarkH]

Attachment: 20120131 divx.zip

User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_7_2) AppleWebKit/535.7 (KHTML, like Gecko) Chrome/16.0.912.77 Safari/535.7

Steps to reproduce:

Installed an add-on from http://108.163.161.66/~install/usa/divx.xpi


Actual results:

The update URL embedded in the Firefox version points to http://brownizze.info/test/update.rdf

The add-on injects youtube.js from the add-on into every page's DOM

That injects http://108.163.161/[.]66/~install/usa/script.js

... which injects http://choosingright/[.]info/extrapost.js

... which injects http://choosingright/[.]info/function.js

Function.js picks at random from an array of blog URLs

blogs[0] = 'http://jsoiwwwenernw633.blogspot.com/?';
//blogs[0] = 'http://apps.facebook.com/wdegwbsaweins/?';
//blogs[1] = 'http://apps.facebook.com/evwiousnasa/?';
//blogs[2] = 'http://apps.facebook.com/sdweonasn/?';

It then grabs all of your friends via http://www.facebook.com/ajax/typeahead/first_degree.php

It then posts a like of the URL chosen earlier with a comment of "REDICULOUS HAVE Y0U LOOKED AT THIS? @<friend_name> @<friend_name2>…", which will send a notification to each friend that they were mentioned in a comment and encourage them to click on the URL.


Expected results:

It should not steal your Facebook cookies and send likes to Facebook without your consent.

Comment 1

[Jorge Villalobos [:jorgev] (he/him)]

<em:id>[e-mail]</em:id>

<em:creator>YOU</em:creator>
Funny.

Comment 2

[Jorge Villalobos [:jorgev] (he/him)]

https://addons.mozilla.org/en-US/firefox/blocked/i57