AVG uncovers new data-stealing Mumba botnet

The botnet uses the latest version of the advanced Zeus malware

Researchers at AVG have uncovered a botnet that has been harvesting personal information and uses the latest version of the Zeus code, underscoring the widespread use of the sophisticated malware.

Dubbed the Mumba botnet, the campaign infected more than 35,000 computers when it started at the end of April, according to a white paper released by AVG.

The botnet has now collected at least 60GB of information from some 55,000 computers, half of which are in the U.K. and Germany, according to an analysis of a server used to collect the data, which included credit card numbers, e-mail, login and password information for social-networking sites and bank account details.

Mumba uses at least four variants of Zeus to spy on computers. Zeus is a well-known piece of malware can send spam, steal financial or other data or conduct a distributed denial-of-service attack against other computers.

Its creators have developed a toolkit that they can sell to lesser technically skilled cybercriminals that makes it easier to use and manage infected computers. The latest Zeus version, 2.0.4.2, supports the Windows 7 operating system and can also steal HTTP traffic data from the Firefox browser, AVG said.

The Mumba botnet is believed to be controlled by the Avalanche Group, which specializes in phishing sites as well as malware, AVG said.

To hide how they control the botnet, Mumba's operators are using a technique called fast flux, which allows an administrator to quickly point a domain name to a new IP address. It is a redundancy mechanism that is designed to allow high-traffic Web sites to manage traffic, but it is also being abused by cybercriminals to make their command-and-control system much harder to shut down.

"The 'Mumba' botnet is probably one of the first to use the Avalanche operation in order to host its stolen goods as well as the malware infection," the white paper said. "This seems to be yet another step in the never ending arms race between the security industry and cybercriminals."

Send news tips and comments to jeremy_kirk@idg.com

Join the newsletter!

Or

Sign up to gain exclusive access to email subscriptions, event invitations, competitions, giveaways, and much more.

Membership is free, and your security and privacy remain protected. View our privacy policy before signing up.

Error: Please check your email address.

Tags securityAVGmalwaredata protectiondata breachExploits / vulnerabilities

Keep up with the latest tech news, reviews and previews by subscribing to the Good Gear Guide newsletter.

Jeremy Kirk

IDG News Service
Show Comments

Brand Post

Most Popular Reviews

Latest Articles

Resources

PCW Evaluation Team

Luke Hill

MSI GT75 TITAN

I need power and lots of it. As a Front End Web developer anything less just won’t cut it which is why the MSI GT75 is an outstanding laptop for me. It’s a sleek and futuristic looking, high quality, beast that has a touch of sci-fi flare about it.

Emily Tyson

MSI GE63 Raider

If you’re looking to invest in your next work horse laptop for work or home use, you can’t go wrong with the MSI GE63.

Laura Johnston

MSI GS65 Stealth Thin

If you can afford the price tag, it is well worth the money. It out performs any other laptop I have tried for gaming, and the transportable design and incredible display also make it ideal for work.

Andrew Teoh

Brother MFC-L9570CDW Multifunction Printer

Touch screen visibility and operation was great and easy to navigate. Each menu and sub-menu was in an understandable order and category

Louise Coady

Brother MFC-L9570CDW Multifunction Printer

The printer was convenient, produced clear and vibrant images and was very easy to use

Edwina Hargreaves

WD My Cloud Home

I would recommend this device for families and small businesses who want one safe place to store all their important digital content and a way to easily share it with friends, family, business partners, or customers.

Featured Content

Product Launch Showcase

Latest Jobs

Don’t have an account? Sign up here

Don't have an account? Sign up now

Forgot password?