Endpoint
10/30/2012
01:08 PM
Connect Directly
Google+
Twitter
RSS
E-Mail
50%
50%

ZeroAccess Botnet Surges

2.2 million infected with fraudulent ad-click botnet's malware, new report finds

A peer-to-peer botnet known for ad-click fraud and estimated at making $100,000 per day for its operator now has infected some 2.2 million users worldwide.

New data released today from the third quarter 2012 malware report by Kindsight, an Alcatel-Lucent company, says ZeroAccess is the most active botnet and is growing through its new "super-node" model where an infected host is connected directly to the Internet without a home router or network address translation device.

"The ZeroAccess botnet has grown significantly to become the most active botnet we've measured this year," said Kevin McNamee, security architect and director of Kindsight Security Labs. "Cybercriminals are primarily using it to take over victim computers and conduct ad-click fraud. With ZeroAccess, they can mimic the human behavior of clicking online ads, resulting in millions of dollars of fraud."

Kindsight says 13 percent of home networks in North America are infected with malware, 6.5 percent of which are tainted with bot malware, rootkits, and banking Trojans. And mobile malware continues to rise, with an infection rate of more than 3 percent among mobile devices, 90 percent of which is mobile adware.

The ZeroAccess botnet has been on the radar screen of botnet investigators for some time. It can cost legitimate advertisers some $900,000 per day in click fraud, according to Kindsight's report. It produces some 140 million fraudulent ad clicks per day and 260 terabytes of network traffic, the report says.

There are two versions of the botnet: one that performs Bitcoin mining and uses an encrypted peer-to-peer protocol for communications, and another that uses the super-node approach for command and control.

Researchers at SophosLabs last month said they had discovered how the botnet's operators monitor it. "We have also reverse-engineered the mechanisms by which the ZeroAccess owners keep tabs on the botnet, and discovered an array of techniques used that are designed to bury the call-home network communications in legitimate-seeming traffic," Website said James Wyke, senior threat researcher with SophosLabs UK.

Meanwhile, Kindsight found that .8 percent of North America households were infected with ZeroAccess each day during the third quarter of this year.

The TDL-4 botnet was the second most active botnet in Q3. The rootkit-based bot is relatively stealthy, hiding within the master boot record of the infected machine and eluding antivirus applications. TDL-4 is known for deleted competing malware from the machines it infects, and its newest iteration has infected nearly 10 percent of the Fortune 500.

The full report from Kindsight is available here for download.

Have a comment on this story? Please click "Add Your Comment" below. If you'd like to contact Dark Reading's editors directly, send us a message.

Kelly Jackson Higgins is Senior Editor at DarkReading.com. 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 Magazine, ... View Full Bio

Comment  | 
Print  | 
More Insights
Register for Dark Reading Newsletters
White Papers
Flash Poll
Current Issue
Cartoon
Video
Slideshows
Twitter Feed
Dark Reading - Bug Report
Bug Report
Enterprise Vulnerabilities
From DHS/US-CERT's National Vulnerability Database
CVE-2013-6117
Published: 2014-07-11
Dahua DVR 2.608.0000.0 and 2.608.GV00.0 allows remote attackers to bypass authentication and obtain sensitive information including user credentials, change user passwords, clear log files, and perform other actions via a request to TCP port 37777.

CVE-2014-0174
Published: 2014-07-11
Cumin (aka MRG Management Console), as used in Red Hat Enterprise MRG 2.5, does not include the HTTPOnly flag in a Set-Cookie header for the session cookie, which makes it easier for remote attackers to obtain potentially sensitive information via script access to this cookie.

CVE-2014-3485
Published: 2014-07-11
The REST API in the ovirt-engine in oVirt, as used in Red Hat Enterprise Virtualization (rhevm) 3.4, allows remote authenticated users to read arbitrary files and have other unspecified impact via unknown vectors, related to an XML External Entity (XXE) issue.

CVE-2014-3499
Published: 2014-07-11
Docker 1.0.0 uses world-readable and world-writable permissions on the management socket, which allows local users to gain privileges via unspecified vectors.

CVE-2014-3503
Published: 2014-07-11
Apache Syncope 1.1.x before 1.1.8 uses weak random values to generate passwords, which makes it easier for remote attackers to guess the password via a brute force attack.

Best of the Web
Dark Reading Radio
Archived Dark Reading Radio
Marilyn Cohodas and her guests look at the evolving nature of the relationship between CIO and CSO.