Malicious ads served on java.com

Posted by   Virus Bulletin on   Aug 28, 2014

If you do need to run plug-ins, make sure you enable click-to-play.

Last week, we published a blog previewing the VB2014 paper 'Optimized mal-ops. Hack the ad network like a boss' by Bromium researchers Vadim Kotov and Rahul Kashyap. In the paper, they show how purchasing ad space from legitimate ad servers, and using it to serve malicious ads, gives malware authors a lot more opportunities to spread their malicious creations than exploit kits ever did.

As if the paper didn't make this point strongly enough already, Fox-IT researcher Yonathan Klijnsma has discovered a campaign that served malicious ads on a number of prominent websites, including tmz.com, ibtimes.com and java.com — in all cases, vulnerable users were infected without having to click on the ads.

There is some irony in the malware being served on java.com, as exploits targeting the Java browser plug-in are commonly used to serve malware. Although these days exploit kits tend to focus mostly on Flash and Silverlight exploits, few people actually need the Java plug-in, and uninstalling is much easier than always making sure you have the latest version running. If you do need to run the Java plug-in, at the very least you should take advantage of click-to-play.

As Yonathan points out, there is no silver bullet to protect yourself from malvertising, and he too highlights the importance of click-to-play, as well as uninstalling unnecessary plug-ins and keeping those that are needed up to date.

Posted on 28 August 2014 by Martijn Grooten

twitter.png
fb.png
linkedin.png
hackernews.png
reddit.png

 

Latest posts:

VB2021 localhost videos available on YouTube

VB has made all VB2021 localhost presentations available on the VB YouTube channel, so you can now watch - and share - any part of the conference freely and without registration.

VB2021 localhost is over, but the content is still available to view!

VB2021 localhost - VB's second virtual conference - took place last week, but you can still watch all the presentations.

VB2021 localhost call for last-minute papers

The call for last-minute papers for VB2021 localhost is now open. Submit before 20 August to have your paper considered for one of the slots reserved for 'hot' research!

New article: Run your malicious VBA macros anywhere!

Kurt Natvig explains how he recompiled malicious VBA macro code to valid harmless Python 3.x code.

New article: Dissecting the design and vulnerabilities in AZORult C&C panels

In a new article, Aditya K Sood looks at the command-and-control (C&C) design of the AZORult malware, discussing his team's findings related to the C&C design and some security issues they identified.

We have placed cookies on your device in order to improve the functionality of this site, as outlined in our cookies policy. However, you may delete and block all cookies from this site and your use of the site will be unaffected. By continuing to browse this site, you are agreeing to Virus Bulletin's use of data as outlined in our privacy policy.