Romanian university website compromised to serve Neutrino exploit kit

Posted by   Martijn Grooten on   Jul 28, 2016

This blog post was written by Martijn Grooten and Adrian Luca.

Like every summer, millions of prospective students around the world have been taking entry exams for the university courses they want to attend. Imagine how horrible it would be if those students, after visiting the website of their university of choice, suddenly found all of their personal files encrypted by ransomware.

This is exactly what may have happened in Romania, as the website of the Carol Davila University of Medicine and Pharmacy (which, perhaps tellingly, has been created using Joomla) has been compromised as part of the 'pseudo-Darkleech' campaign.

umfro.png


In this campaign, an iframe is inserted into the HTML code of the targeted website (hidden using CSS), into which malicious code is loaded. Following the disappearance of the Angler exploit kit last month, pseudo-Darkleech now usually serves the Neutrino exploit kit. Indeed, this is what we observed in this case.

While we did not catch the payload, it is usually the CryptXXX ransomware that is served. CryptXXX is one of the most prevalent kinds of ransomware in circulation today, and one of those which has implemented its crypto correctly – hence no decryption tools are available. 

At the time of writing, hidden iframes are still being injected into the affected university's website. We have contacted the university.

umfropseudodarkleech_small.png


If you are interested in keeping track of this and related campaigns, Brad Duncan's malware-traffic-analysis.net is an excellent source. Meanwhile, the VBWeb tests measure the ability of security products to block web-based attacks, in particular exploit kits.

Several talks at VB2016 deal with ransomware and exploit kits, while there is also a Small Talk that addresses  the question of how the industry can work together to stay ahead of exploit kits. (Registration for VB2016 is now open.)

Update: We have been contacted by Malwarebytes researcher Jérôme Segura, one of the leading experts when it comes to exploit kits, who told us that the payload in this case is in fact CrypMIC, which mimics CryptXXX. At VB2016, Jérôme and his colleague Chris Boyd will present a paper on malvertising, one of the most common ways for exploit kits to spread.

twitter.png
fb.png
linkedin.png
googleplus.png
reddit.png

 

Latest posts:

Necurs pump-and-dump spam campaign pushes obscure cryptocurrency

A Necurs pump-and-dump spam campaign pushing the lesser known Swisscoin botnet is mostly background noise for the Internet.

Alleged author of creepy FruitFly macOS malware arrested

A 28-year old man from Ohio has been arrested on suspicion of having created the mysterious FruitFly malware that targeted macOS and used it to spy on its victims.

The threat and security product landscape in 2017

At the start of the new year, Virus Bulletin looks back at the threats seen in the 2017 and at the security products that are available to help mitigate them.

Spamhaus report shows many botnet controllers look a lot like legitimate servers

Spamhaus's annual report on botnet activity shows that botherders tend to use popular, legitimate hosting providers, domain registrars and top-level domains when setting up command-and-control servers.

Tips on researching tech support scams

As tech support scammers continue to target the computer illiterate through cold calling, VB's Martijn Grooten uses his own experience to share some advice on how to investigate such scams.