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.

Threat Intelligence

DanaBot Malware Adds Spam to its Menu

A new generation of modular malware increases its value to criminals.

Malware authors adding to the capabilities of their malicious software is nothing new. But a recently discovered addition of spam-generation to a banking Trojan package demonstrates how criminals are adding email capabilities to increase ways to both distribute and monetize it.

DanaBot, the malware at the center of the new discovery by ESET and Proofpoint, was first described by Proofpoint researchers in May of this year. It was, at the time, a relatively simple banking Trojan spread by an actor known for purchasing malware from other authors.

But a new campaign has DanaBot distributing a malicious payload related to GootKit, an advanced banking Trojan. It's an example of a criminal actor bringing together modular malware from two criminal organizations that have, in the past, been known for working independently.

"This follows along with a trend that we're seeing it with the actors who, instead of distributing just a straight banking Trojan or ransomware, are distributing full-featured malware," says Christopher Dawson, threat intelligence lead at Proofpoint. "We're seeing lots more Remote Access Trojans being distributed. And you know a RAT being submitted by a financially motivated actor is kind of a big deal."

Dawson says that the financial motivation means that the authors of malware like DanaBot are going to try to maximize the return on their development investment, so they're likely to continue adding features.

DanaBot's new capabilities include harvesting email addresses from a victim's computer and using those addresses for spam messages that seek to spread the malware to systems both on the victim's network and to other, unrelated networks.

The growing trend to use modular design in malware makes it easier for threat actors to add capabilities to existing software for new campaigns. Describing the new DanaBot activity, ESET researchers wrote that "part of DanaBot's configuration has a structure we have previously seen in other malware families, for example Tinba or Zeus. This allows its developers to use similar webinject scripts or even reuse third-party scripts."

What to Do

So what does this shift mean for enterprise security teams? "It's really reinforcing that old message; layered security, robust backups, robust patching regimens. This is the same message over and over," Dawson says. 

While it's hard to maintain multiple systems, endpoint security, edge security, app security and everything else, he says, "it's just it is the nature of the beast that you've got to be able to catch malware at every step."

Dawson says the question of whether it's the work of a criminal organization or a nation-state actor ultimately makes little difference. "While nation-state actors get the bulk of the mass media press, the nature of the threat means that ultimately the victim has something that the attacker wants," he says. "But most of what we see is crimeware. These are are financially motivated actors and they are just doing their best to monetize their efforts."

Related Content:

Curtis Franklin Jr. is Senior Analyst at Omdia, focusing on enterprise security management. Curtis has been writing about technologies and products in computing and networking since the early 1980s. He has been on staff and contributed to technology-industry publications ... View Full Bio
 

Recommended Reading:

Comment  | 
Print  | 
More Insights
Comments
Newest First  |  Oldest First  |  Threaded View
Commentary
Cyberattacks Are Tailored to Employees ... Why Isn't Security Training?
Tim Sadler, CEO and co-founder of Tessian,  6/17/2021
Edge-DRsplash-10-edge-articles
7 Powerful Cybersecurity Skills the Energy Sector Needs Most
Pam Baker, Contributing Writer,  6/22/2021
News
Microsoft Disrupts Large-Scale BEC Campaign Across Web Services
Kelly Sheridan, Staff Editor, Dark Reading,  6/15/2021
Register for Dark Reading Newsletters
White Papers
Video
Cartoon
Current Issue
The State of Cybersecurity Incident Response
In this report learn how enterprises are building their incident response teams and processes, how they research potential compromises, how they respond to new breaches, and what tools and processes they use to remediate problems and improve their cyber defenses for the future.
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-2021-2322
PUBLISHED: 2021-06-23
Vulnerability in OpenGrok (component: Web App). Versions that are affected are 1.6.7 and prior. Easily exploitable vulnerability allows low privileged attacker with network access via HTTPS to compromise OpenGrok. Successful attacks of this vulnerability can result in takeover of OpenGrok. CVSS 3.1 ...
CVE-2021-20019
PUBLISHED: 2021-06-23
A vulnerability in SonicOS where the HTTP server response leaks partial memory by sending a crafted HTTP request, this can potentially lead to an internal sensitive data disclosure vulnerability.
CVE-2021-21809
PUBLISHED: 2021-06-23
A command execution vulnerability exists in the default legacy spellchecker plugin in Moodle 3.10. A specially crafted series of HTTP requests can lead to command execution. An attacker must have administrator privileges to exploit this vulnerabilities.
CVE-2021-34067
PUBLISHED: 2021-06-23
Heap based buffer overflow in tsMuxer 2.6.16 allows attackers to cause a Denial of Service (DoS) by running the application with a crafted file.
CVE-2021-34068
PUBLISHED: 2021-06-23
Heap based buffer overflow in tsMuxer 2.6.16 allows attackers to cause a Denial of Service (DoS) by running the application with a crafted file.