VB2019 papers: Emotet and Ryuk

Posted by   Martijn Grooten on   Oct 23, 2019

Targeted ransomware has become one of the biggest and most damaging cybercrime trends in recent years. 'Targeted' is a bit of a misnomer though: the operators of the ransomware rarely choose the victim organisations. Instead, they have the organisations 'chosen' through an infection with another piece of malware that is then used as a foothold for the ransomware.

Quite often, this malware is Emotet, which made a spectacular comeback in September. The ransomware is deployed often through a second malware family like Trickbot. Various ransomware families are making use of this scheme to be installed on high-value networks, with Ryuk being one of the most prominent.

f1_detected_samples.pngDetected Emotet samples on a daily basis in 2019.

A good understanding of Emotet and an ability to defend against it will allow one to fend off many sophisticated targeted attackers, while an understanding of Ryuk and similar ransomware families will aid an overall understanding of how such malware then spreads through an internal network.

Ryuk-Figure5.pngRyuk ransom note.


Today we publish two relevant papers presented at VB2019, the 29th Virus Bulletin Conference. Sophos researcher Luca Nagy presented a paper on Emotet, while Deloitte researchers Gabriela Nicolao and Luciano Martins presented one on Ryuk. In addition to the respective papers, we have also uploaded the videos of the presentations to our YouTube channel.

VB2019-conference-paper.jpg
Exploring Emotet, an elaborate everyday enigma

Read the paper (HTML)

Download the paper (PDF)

 

VB2019-conference-paper.jpg
Shinigami’s revenge: the long tail of the Ryuk malware

Read the paper (HTML)

Download the paper (PDF)

 

 

 

 

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

 

Latest posts:

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.

VB2021 localhost call for papers: a great opportunity

VB2021 localhost presents an exciting opportunity to share your research with an even wider cross section of the IT security community around the world than usual, without having to take time out of your work schedule (or budget) to travel.

New article: Excel Formula/Macro in .xlsb?

In a follow-up to an article published last week, Kurt Natvig takes us through the analysis of a new malicious sample using the .xlsb file format.

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.