Trojan program based on ZeuS targets 150 banks, can hijack webcams

The new Chthonic Trojan borrows features from ZeuS and several of its spinoffs, researchers from Kaspersky Lab said

A new computer Trojan based on the infamous ZeuS banking malware is targeting users of over 150 banks and payment systems from around the world, security researchers warn.

The new threat, dubbed Chthonic, is based on ZeusVM, a Trojan program discovered in February that is itself a modification of the much older ZeuS Trojan.

"The Trojan is apparently an evolution of ZeusVM, although it has undergone a number of significant changes," security researchers from antivirus vendor Kaspersky Lab said in a blog post. "Chthonic uses the same encryptor as Andromeda bots, the same encryption scheme as Zeus AES and Zeus V2 Trojans, and a virtual machine similar to that used in ZeusVM and KINS malware."

Like ZeuS, Chthonic's main feature is the ability to surreptitiously modify banking websites when opened by victims on their computers. This technique, commonly known as Web injection, is used to add rogue Web forms on banking websites that ask victims for sensitive information, like credit card details or second-factor authorization codes.

However, Chthonic has a modular architecture that allows cybercriminals to extend the Trojan's functionality. The Kaspersky Lab researchers found Chthonic modules designed to collect system information, steal locally stored passwords, log keystrokes, allow remote connections to the computer through VNC, use the infected computer as a proxy server and record video and sound through the computer's webcam and microphone.

According to Kaspersky Lab, there are several Chthonic-based botnets with different configurations, suggesting the malware is being used by different groups.

"Overall, the botnets we are aware of target online banking systems of over 150 different banks and 20 payment systems in 15 countries," the company's researchers said. "The cybercriminals seem most interested in banks in the UK, Spain, the US, Russia, Japan and Italy."

The new Trojan is primarily distributed in two ways: downloaded by another malware program called Andromeda or through rogue emails that contain specially crafted RTF documents which exploit a Microsoft Word vulnerability patched in March.

Chthonic is the next stage in the evolution of ZeuS, which has become a development framework for malware creators, the Kaspersky researchers said.

Launched in 2007, ZeuS quickly became one of the most popular tools used by cybercriminals, primarily because its was being sold on underground forums. Over the years it was used by many gangs to steal online banking credentials from consumers and businesses that were then used to empty their accounts.

In 2011 the ZeuS source code was leaked online some time after its main developer stopped working on it and gave the code to others. This allowed other malware developers to easily modify ZeuS and create custom threats based on it, including Trojan programs like Citadel, Ice IX, ZeusVM and Gameover Zeus.

Join the CSO newsletter!

Error: Please check your email address.

Tags securityDesktop securityspywaremalwarekaspersky labfraud

More about CitadelKasperskyMicrosoft

Show Comments

Featured Whitepapers

Editor's Recommendations

Solution Centres

Stories by Lucian Constantin

Latest Videos

  • 150x50

    CSO Webinar: The Human Factor - Your people are your biggest security weakness

    ​Speakers: David Lacey, Researcher and former CISO Royal Mail David Turner - Global Risk Management Expert Mark Guntrip - Group Manager, Email Protection, Proofpoint

    Play Video

  • 150x50

    CSO Webinar: Current ransomware defences are failing – but machine learning can drive a more proactive solution

    Speakers • Ty Miller, Director, Threat Intelligence • Mark Gregory, Leader, Network Engineering Research Group, RMIT • Jeff Lanza, Retired FBI Agent (USA) • Andy Solterbeck, VP Asia Pacific, Cylance • David Braue, CSO MC/Moderator What to expect: ​Hear from industry experts on the local and global ransomware threat landscape. Explore a new approach to dealing with ransomware using machine-learning techniques and by thinking about the problem in a fundamentally different way. Apply techniques for gathering insight into ransomware behaviour and find out what elements must go into a truly effective ransomware defence. Get a first-hand look at how ransomware actually works in practice, and how machine-learning techniques can pick up on its activities long before your employees do.

    Play Video

  • 150x50

    CSO Webinar: Get real about metadata to avoid a false sense of security

    Speakers: • Anthony Caruana – CSO MC and moderator • Ian Farquhar, Worldwide Virtual Security Team Lead, Gigamon • John Lindsay, Former CTO, iiNet • Skeeve Stevens, Futurist, Future Sumo • David Vaile - Vice chair of APF, Co-Convenor of the Cyberspace Law And Policy Community, UNSW Law Faculty This webinar covers: - A 101 on metadata - what it is and how to use it - Insight into a typical attack, what happens and what we would find when looking into the metadata - How to collect metadata, use this to detect attacks and get greater insight into how you can use this to protect your organisation - Learn how much raw data and metadata to retain and how long for - Get a reality check on how you're using your metadata and if this is enough to secure your organisation

    Play Video

  • 150x50

    CSO Webinar: How banking trojans work and how you can stop them

    CSO Webinar: How banking trojans work and how you can stop them Featuring: • John Baird, Director of Global Technology Production, Deutsche Bank • Samantha Macleod, GM Cyber Security, ME Bank • Sherrod DeGrippo, Director of Emerging Threats, Proofpoint (USA)

    Play Video

  • 150x50

    IDG Live Webinar:The right collaboration strategy will help your business take flight

    Speakers - Mike Harris, Engineering Services Manager, Jetstar - Christopher Johnson, IT Director APAC, 20th Century Fox - Brent Maxwell, Director of Information Systems, THE ICONIC - IDG MC/Moderator Anthony Caruana

    Play Video

More videos

Blog Posts