Hacked Routers exploited to serve the Dyre banking trojan

Researchers at the Fujitsu Security Operations Center spotted a strain of Dyre being served exploiting hundreds of compromised home routers.

According to the popular security expert Brian Krebs, criminals are exploiting a new technique to spread the Dyre banking malware, they are leveraging hacked wireless routers.

Dyre is usually downloaded by the malicious trojan Upatre, it is a powerful malware capable to perform man-in-the-middle attacks through browser injections and harvest the victim’s credential.

Recently, security researchers at the Fujitsu Security Operations Center in Warrington (UK) spotted a strain of Upatre being served from hundreds of compromised home routers. The experts noticed that the cyber criminal mainly exploited MikroTik and Ubiquiti’s AirOS routers.

“We have seen literally hundreds of wireless access points, and routers connected in relation to this botnet, usually AirOS,” said Bryan Campbell, lead threat intelligence analyst at Fujitsu. “The consistency in which the botnet is communicating with compromised routers in relation to both distribution and communication leads us to believe known vulnerabilities are being exploited in the firmware which allows this to occur.”


Experts speculate that attackers have compromised so many routers by exploiting devices with default credentials (e.g., “ubnt” for both username and password on most Ubiquiti AirOS routers). The experts noticed that many devices used to spread the Dyre malware had the Telnet port wide open.

Brian Krebs highlighted that it isn’t the first time that botnet of routers were used by hackers for illegal activities, according to the investigator the popular hacking crew LizardSquad used a number of compromised home routers to run DDoS attacks that brought down the Microsoft’s Xbox and Sony Playstation’s networks.

It is important to change factory settings for any device to avoid that bad actors exploit default administrative credentials for routers and other network devices to control them.

Websites like routerpasswords.com provide default administrative credentials for several different models of routers produced by various manufacturers.

Pierluigi Paganini

FAIR USE NOTICE: Under the "fair use" act, another author may make limited use of the original author's work without asking permission. Pursuant to 17 U.S. Code § 107, certain uses of copyrighted material "for purposes such as criticism, comment, news reporting, teaching (including multiple copies for classroom use), scholarship, or research, is not an infringement of copyright." As a matter of policy, fair use is based on the belief that the public is entitled to freely use portions of copyrighted materials for purposes of commentary and criticism. The fair use privilege is perhaps the most significant limitation on a copyright owner's exclusive rights. Cyber Defense Media Group is a news reporting company, reporting cyber news, events, information and much more at no charge at our website Cyber Defense Magazine. All images and reporting are done exclusively under the Fair Use of the US copyright act.

Global InfoSec Awards 2022

We are in our 10th year, and these awards are incredibly well received – helping build buzz, customer awareness, sales and marketing growth opportunities, investment opportunities and so much more.


10th Anniversary Exclusive Top 100 CISO Conference & Innovators Showcase