Bash malware targets embedded devices running BusyBox

Attackers use malware dubbed Bashlite to scan for and install backdoors on routers and other systems running BusyBox

Attacks that exploit the Shellshock vulnerabilities recently patched in the Bash Unix deliver a malware program that tries to compromise systems running BusyBox, a collection of Unix utilities typically used on embedded devices like routers.

The backdoor-type malware is dubbed Bashlite by security researchers from Trend Micro and it infects Linux-based systems through Shellshock attack vectors.

In September, security researchers found several related vulnerabilities in the Bash shell that can allow remote code execution attacks. These vulnerabilities, collectively known as Shellshock, can be exploited through CGI scripts running on Web servers, the CUPS printing system for Unix-like operating systems, the Secure Shell (SSH), OpenVPN, SMTP servers and other services.

After it infects a system, Bashlite malware scans the network for systems that accept Telnet connections and attempts to log in using common usernames and passwords combinations: root, admin, support, 12345, 123456, pass, password and toor. It then issues a series of commands to determine if the system runs BusyBox and uses it to download two remote scripts called bin.sh and bin2.sh, the Trend Micro researchers said in a blog post.

"Devices running on BusyBox can be possibly affected by Bashlite," the researchers said. "As such, a remote attacker can issue commands or download other files on the devices thus compromising their security."

In addition to scanning for and compromising systems running BusyBox, Bashlite malware is designed to launch distributed denial-of-service attacks.

Join the Good Gear Guide newsletter!

Error: Please check your email address.

Tags trend microsecurityExploits / vulnerabilitiesmalware

Our Back to Business guide highlights the best products for you to boost your productivity at home, on the road, at the office, or in the classroom.

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

Lucian Constantin

IDG News Service
Show Comments

Essentials

Microsoft L5V-00027 Sculpt Ergonomic Keyboard Desktop

Learn more >

Lexar® JumpDrive® S57 USB 3.0 flash drive

Learn more >

Mobile

Lexar® JumpDrive® S45 USB 3.0 flash drive 

Learn more >

Exec

Lexar® Professional 1800x microSDHC™/microSDXC™ UHS-II cards 

Learn more >

HD Pan/Tilt Wi-Fi Camera with Night Vision NC450

Learn more >

Lexar® JumpDrive® C20c USB Type-C flash drive 

Learn more >

Audio-Technica ATH-ANC70 Noise Cancelling Headphones

Learn more >

Budget

Back To Business Guide

Click for more ›

Most Popular Reviews

Latest News Articles

Resources

GGG Evaluation Team

Michael Hargreaves

Dell XPS 13

I’d happily recommend this touchscreen laptop and Windows 10 as a great way to get serious work done at a desk or on the road.

Kathy Cassidy

STYLISTIC Q702

First impression on unpacking the Q702 test unit was the solid feel and clean, minimalist styling.

Anthony Grifoni

STYLISTIC Q572

For work use, Microsoft Word and Excel programs pre-installed on the device are adequate for preparing short documents.

Steph Mundell

LIFEBOOK UH574

The Fujitsu LifeBook UH574 allowed for great mobility without being obnoxiously heavy or clunky. Its twelve hours of battery life did not disappoint.

Andrew Mitsi

STYLISTIC Q702

The screen was particularly good. It is bright and visible from most angles, however heat is an issue, particularly around the Windows button on the front, and on the back where the battery housing is located.

Featured Content

Latest Jobs

Don’t have an account? Sign up here

Don't have an account? Sign up now

Forgot password?