Patch early, patch often, but don't blindly trust every 'patch'

Posted by   Martijn Grooten on   Apr 16, 2018

Patching is important, but not everything that presents itself as a security patch is safe to install.

Malwarebytes researcher Jérôme Segura has written a detailed analysis of the 'FakeUpdates' campaign, where thousands of websites with an out-of-date content management system have been compromised to spread malware. Rather than exploiting vulnerabilities in browsers or browser plug-ins, as is common in exploit kits, this campaign uses social engineering to trick a user into installing malware.

A visitor to such a site would be presented with a dialog urging them to update their browser or their Flash Player plug-in, but the update is, in fact, a script, hosted on Dropbox, that downloads the final payload. Jérôme mentions having seen both the Chthonic banking trojan and the NetSupport RAT being delivered; both have been used in exploit kits in the past.

fakeupdates.pngA compromised site running Joomla serving a Dropbox-hosted .js file masquerading as a Flash Player update. (Thanks to Adrian Luca for the screenshot.)


Though technically not very advanced, this threat might not be picked up by many automatic analysis systems since it requires user interaction. Moreover, to further frustrate researchers, the dialog is shown only once per IP address.

One of the leading researchers in web-based malware, Jérôme will speak at VB2018 on another recent trend in web-based malware: drive-by cryptocurrency miners. VB2018 takes place in Montreal, Canada 3-5 October this autumn. The programme was published last week; registration will open soon.

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

 

Latest posts:

VB2019 paper: APT cases exploiting vulnerabilities in region-specific software

At VB2019, JPCERT/CC's Shusei Tomonaga and Tomoaki Tani presented a paper on attacks that exploit vulnerabilities in software used only in Japan, using malware that is unique to Japan. Today we publish both their paper and the recording of their…

New paper: Detection of vulnerabilities in web applications by validating parameter integrity and data flow graphs

In a follow-up to a paper presented at VB2019, Prismo Systems researchers Abhishek Singh and Ramesh Mani detail algorithms that can be used to detect SQL injection in stored procedures, persistent cross-site scripting (XSS), and server‑side request…

VB2020 programme announced

VB is pleased to reveal the details of an interesting and diverse programme for VB2020, the 30th Virus Bulletin International Conference.

VB2019 paper: Cyber espionage in the Middle East: unravelling OSX.WindTail

At VB2019 in London, Jamf's Patrick Wardle analysed the WindTail macOS malware used by the WindShift APT group, active in the Middle East. Today we publish both Patrick's paper and the recording of his presentation.

VB2019 paper: 2,000 reactions to a malware attack – accidental study

At VB2019 cybercrime journalist and researcher Adam Haertlé presented an analysis of almost 2000 unsolicited responses sent by victims of a malicious email campaign. Today we publish both his paper and the recording of his presentation.

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.