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.

Vulnerabilities / Threats

8/13/2020
01:25 PM
50%
50%

NSA & FBI Disclose New Russian Cyberespionage Malware

APT 28, aka Fancy Bear, is deploying the Drovorub malware designed for Linux systems as part of cyber-espionage operations.

The National Security Agency (NSA) and Federal Bureau of Investigation (FBI) today released a new security advisory detailing previously unknown Russian malware. APT28, otherwise known as Fancy Bear or Sofacy, is using the so-called Drovorub malware in cyber-espionage operations.

Their advisory notes these group names are private-sector terms for Russia's GRU 85th Main Special Service Center military unit 26165, which is now deploying the Linux malware against victims. Officials warn this represents a threat because Linux systems are "used pervasively" in national security systems, the Department of Defense, and the Defense Industrial Base.

Drovorub is a toolset containing an implant coupled with a kernel module rootkit, a file transfer and port forwarding tool, and a command-and-control server. When deployed on a victim machine, the malware enables direct communication with the attacker-controlled C2 server, file download and upload capabilities, execution of arbitrary commands, port forwarding of network traffic to other hosts on the network, and techniques to evade detection.

Officials provide detection techniques to spot Drovorub malware; however, they note the Drovorub-kernel module is a challenge for large-scale detection on the host because it hides Drovorub artifacts from tools used for live response at scale. Companies can use packet inspection at network boundaries to detect the malware on networks, they say. Host-based methods include probing, security tools, live response, memory analysis, and media analysis.

Admins are encouraged to update to Linux Kernel 3.7 or later to prevent a system from being susceptible to Drovorub's hiding and persistence. System owners are advised to configure systems to only load modules with a valid digital signature so it's harder for actors to break in.

Read more details in the release and full security advisory.

 

Dark Reading's Quick Hits delivers a brief synopsis and summary of the significance of breaking news events. For more information from the original source of the news item, please follow the link provided in this article. View Full Bio
 

Recommended Reading:

Comment  | 
Print  | 
More Insights
Comments
Newest First  |  Oldest First  |  Threaded View
News
FluBot Malware's Rapid Spread May Soon Hit US Phones
Kelly Sheridan, Staff Editor, Dark Reading,  4/28/2021
Slideshows
7 Modern-Day Cybersecurity Realities
Steve Zurier, Contributing Writer,  4/30/2021
Commentary
How to Secure Employees' Home Wi-Fi Networks
Bert Kashyap, CEO and Co-Founder at SecureW2,  4/28/2021
Register for Dark Reading Newsletters
White Papers
Video
Cartoon Contest
Current Issue
2021 Top Enterprise IT Trends
We've identified the key trends that are poised to impact the IT landscape in 2021. Find out why they're important and how they will affect you today!
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-2021-31755
PUBLISHED: 2021-05-07
An issue was discovered on Tenda AC11 devices with firmware through 02.03.01.104_CN. A stack buffer overflow vulnerability in /goform/setmac allows attackers to execute arbitrary code on the system via a crafted post request.
CVE-2021-31756
PUBLISHED: 2021-05-07
An issue was discovered on Tenda AC11 devices with firmware through 02.03.01.104_CN. A stack buffer overflow vulnerability in /gofrom/setwanType allows attackers to execute arbitrary code on the system via a crafted post request. This occurs when input vector controlled by malicious attack get copie...
CVE-2021-31757
PUBLISHED: 2021-05-07
An issue was discovered on Tenda AC11 devices with firmware through 02.03.01.104_CN. A stack buffer overflow vulnerability in /goform/setVLAN allows attackers to execute arbitrary code on the system via a crafted post request.
CVE-2021-31758
PUBLISHED: 2021-05-07
An issue was discovered on Tenda AC11 devices with firmware through 02.03.01.104_CN. A stack buffer overflow vulnerability in /goform/setportList allows attackers to execute arbitrary code on the system via a crafted post request.
CVE-2021-31458
PUBLISHED: 2021-05-07
This vulnerability allows remote attackers to execute arbitrary code on affected installations of Foxit Reader 10.1.1.37576. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the handlin...