Dark Reading is part of the Informa Tech Division of Informa PLC

This site is operated by a business or businesses owned by Informa PLC and all copyright resides with them.Informa PLC's registered office is 5 Howick Place, London SW1P 1WG. Registered in England and Wales. Number 8860726.

Endpoint

9/16/2009
01:59 PM
Connect Directly
Twitter
RSS
E-Mail
50%
50%

Antivirus Rarely Catches Zbot Zeus Trojan

New research reveals the No. 1 financial Trojan is difficult to detect

The most pervasive banking Trojan evades detection by antivirus software most of the time, according to new research.

Zeus, the Trojan that steals financial credentials and data and is spread via the Zbot botnet, is detected only 23 percent of the time by up-to-date antivirus applications, researchers at Trusteer discovered. Trusteer sampled 10,000 machines that were infected by Zbot, and of these Zeus-infected machines, 55 percent were running-up-to date AV software.

The massive Zbot botnet -- made up of 3.6 million PCs in the U.S., or 1 percent of all PCs in the country, according to Damballa data -- spreads Zeus, which is the No. 1 financial Trojan, representing 44 percent of all financial malware infections today, according to Trusteer. The malware steals users' online financial credentials and moves them to a remote server, where it can inject HTML onto pages rendered by the victim's browser to display its own content mimicking, for instance, a bank's Web page.

"Zeus' infection rate is higher than that of any other financial Trojan. We are seeing actual fraud linked to Zeus -- accounts being compromised, [and] money transferred from accounts of customers infected with Zeus," says Mickey Boodaei, founder and CEO of Trusteer, which sells online banking security tools. "When we investigate some of our banking customers' [machines infected by it], we find evidence of abuse on the computer, so we know this crime ring is very active and dangerous."

It's unclear exactly why Zeus is so wily, but Boodaei says there are multiple variants of the malware, which could make it more difficult to pinpoint.

"One thing we didn't do is check the same thing for other Trojans. It could be that the infection rates are like this for all Trojans," Boodaei says. "But we know Zeus is very effective at hiding in the operating system, and it's hard to remove it."

Of the Zeus-infected bots, 31 percent weren't running any AV program, while 14 percent were running AV that wasn't up-to-date. The rest were running up-to-date AV.

Trusteer estimates that among all Windows users, 71 percent run up-to-date AV, 6 percent run AV that's out of date, and about 23 percent don't run AV at all.

Have a comment on this story? Please click "Discuss" below. If you'd like to contact Dark Reading's editors directly, send us a message. Kelly Jackson Higgins is the Executive Editor of Dark Reading. She is an award-winning veteran technology and business journalist with more than two decades of experience in reporting and editing for various publications, including Network Computing, Secure Enterprise ... View Full Bio

Comment  | 
Print  | 
More Insights
Comments
Newest First  |  Oldest First  |  Threaded View
Edge-DRsplash-10-edge-articles
7 Old IT Things Every New InfoSec Pro Should Know
Joan Goodchild, Staff Editor,  4/20/2021
News
Cloud-Native Businesses Struggle With Security
Robert Lemos, Contributing Writer,  5/6/2021
Commentary
Defending Against Web Scraping Attacks
Rob Simon, Principal Security Consultant at TrustedSec,  5/7/2021
Register for Dark Reading Newsletters
White Papers
Video
Cartoon
Current Issue
2021 Top Enterprise IT Trends
We've identified the key trends that are poised to impact the IT landscape in 2021. Find out why they're important and how they will affect you today!
Flash Poll
How Enterprises are Developing Secure Applications
How Enterprises are Developing Secure Applications
Recent breaches of third-party apps are driving many organizations to think harder about the security of their off-the-shelf software as they continue to move left in secure software development practices.
Twitter Feed
Dark Reading - Bug Report
Bug Report
Enterprise Vulnerabilities
From DHS/US-CERT's National Vulnerability Database
CVE-2021-23134
PUBLISHED: 2021-05-12
Use After Free vulnerability in nfc sockets in the Linux Kernel before 5.12.2 allows local attackers to elevate their privileges. In typical configurations, the issue can only be triggered by a privileged local user with the CAP_NET_RAW capability.
CVE-2021-23135
PUBLISHED: 2021-05-12
Exposure of System Data to an Unauthorized Control Sphere vulnerability in web UI of Argo CD allows attacker to cause leaked secret data into web UI error messages and logs. This issue affects Argo CD 1.8 versions prior to 1.8.7; 1.7 versions prior to 1.7.14.
CVE-2020-28722
PUBLISHED: 2021-05-12
Deskpro Cloud Platform and on-premise 2020.2.3.48207 from 2020-07-30 contains a cross-site scripting (XSS) vulnerability that can lead to an account takeover via custom email templates.
CVE-2020-18165
PUBLISHED: 2021-05-12
Cross Site Scripting (XSS) in LAOBANCMS v2.0 allows remote attackers to execute arbitrary code by injecting commands into the "Website SEO Keywords" field on the page "admin/info.php?shuyu".
CVE-2020-19275
PUBLISHED: 2021-05-12
An Information Disclosure vulnerability exists in dhcms 2017-09-18 when entering invalid characters after the normal interface, which causes an error that will leak the physical path.