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.

Application Security

Researchers Build Framework for Browser-Based Botnets

HTML5 used to build persistent malware on victims' computers.

Researchers have created a new framework dubbed MarioNet that allows an attacker to control a victim's browser and all of its resources.

Modern browsers have become more than simple windows into HTML documents; instead, they are "sophisticated browsing software that essentially behaves as an integrated operating system for web applications," according to new research presented today at Network and Distributed Systems Security (NDSS) Symposium 2019.

The researchers - Panagiotis Papadopoulos, Panagiotis Ilia, Michalis Polychronakis, Evangelos P. Markatos, Sotiris Ioannidis, and Giorgos Vasiliadis - devised a framework for building persistent malicious networks on a browser-based foundation, which they detailed in their paper "Master of Web Puppets: Abusing Web Browsers for Persistent and Stealthy Computation."

The power of malware that uses HTML5 and other browser-based software as an attack component stems from the fact that, by default, Web applications are understood to be trusted and can run client-side JavaScript code with no natural limitations.

MarioNet is a three-step system involving components the researchers call the distributor, servant, and puppeteer. And it is these three components and the persistence they enable that make MarioNet something new.

The distributor is the infection piece, placing the rest of the package on the victim's browser from a single visit to an infected website. The servant is the piece that becomes embedded in the victim's browser, executing the malicious payload as directed by the puppeteer. 

The puppeteer remains on the victim's system, communicating with a C2 server, directing the execution of malicious code, and controlling the code's use of computer resources in order to remain as elusive and evasive as possible.

"The immediate interest is persistence. The paper mentions that these infected sites, however they're infected, they can have the infection piece removed [and] the attack persists," says Mike Bittner, associate director of digital security and operations at The Media Trust. "That attack can take many forms, including DDoS traffic engines and cryptominers, credential skimmers, and banking remote-access Trojans."

Usman Rahim, digital threat analyst at The Media Trust, says this new threat is critical because malicious hackers have been figuring out how to weaponize HTML5's features.

"They've been using obfuscation/deobfuscation JavaScript to disguise malicious code. Now they can use service workers — scripts that offer rich online experiences, push notifications, and background syncs — to gain control of users' browsers long after users have left the compromised site and to help attacks persist despite browser reboots," Rahim says.

MarioNet is an evolution of the threat possible through HTML5. While there has been a growing trend of malware built on HTML5, Bittner says, "It's a trend to make the browser an attack surface. The ability to communicate with a third party over the browser, though, is something you don't see very often."

The research raises another issue: academic computer researchers presenting details of an attack mechanism that had not previously been seen in the wild.  "It's a double-edged sword. It's good because people like me have something to look out for and defend against, but it may be something that people didn't know about before and can now take advantage of."

"From a security professional aspect it's something I wish we could share just among ourselves, but I think the good outweighs the bad," he says.

Related Content:

 

 

 

Join Dark Reading LIVE for two cybersecurity summits at Interop 2019. Learn from the industry's most knowledgeable IT security experts. Check out the Interop agenda here.

Curtis Franklin Jr. is Senior Editor at Dark Reading. In this role he focuses on product and technology coverage for the publication. In addition he works on audio and video programming for Dark Reading and contributes to activities at Interop ITX, Black Hat, INsecurity, and ... View Full Bio
 

Recommended Reading:

Comment  | 
Print  | 
More Insights
Comments
Newest First  |  Oldest First  |  Threaded View
Manchester United Suffers Cyberattack
Dark Reading Staff 11/23/2020
As 'Anywhere Work' Evolves, Security Will Be Key Challenge
Robert Lemos, Contributing Writer,  11/23/2020
Cloud Security Startup Lightspin Emerges From Stealth
Kelly Sheridan, Staff Editor, Dark Reading,  11/24/2020
Register for Dark Reading Newsletters
White Papers
Video
Cartoon Contest
Write a Caption, Win an Amazon Gift Card! Click Here
Latest Comment: This comment is waiting for review by our moderators.
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
Twitter Feed
Dark Reading - Bug Report
Bug Report
Enterprise Vulnerabilities
From DHS/US-CERT's National Vulnerability Database
CVE-2020-29378
PUBLISHED: 2020-11-29
An issue was discovered on V-SOL V1600D V2.03.69 and V2.03.57, V1600D4L V1.01.49, V1600D-MINI V1.01.48, V1600G1 V2.0.7 and V1.9.7, and V1600G2 V1.1.4 OLT devices. It is possible to elevate the privilege of a CLI user (to full administrative access) by using the password [email protected]#y$z%x6x7q8c9z) for the e...
CVE-2020-29379
PUBLISHED: 2020-11-29
An issue was discovered on V-SOL V1600D4L V1.01.49 and V1600D-MINI V1.01.48 OLT devices. During the process of updating the firmware, the update script starts a telnetd -l /bin/sh process that does not require authentication for TELNET access.
CVE-2020-29380
PUBLISHED: 2020-11-29
An issue was discovered on V-SOL V1600D V2.03.69 and V2.03.57, V1600D4L V1.01.49, V1600D-MINI V1.01.48, V1600G1 V2.0.7 and V1.9.7, and V1600G2 V1.1.4 OLT devices. TELNET is offered by default but SSH is not always available. An attacker can intercept passwords sent in cleartext and conduct a man-in-...
CVE-2020-29381
PUBLISHED: 2020-11-29
An issue was discovered on V-SOL V1600D V2.03.69 and V2.03.57, V1600D4L V1.01.49, V1600D-MINI V1.01.48, V1600G1 V2.0.7 and V1.9.7, and V1600G2 V1.1.4 OLT devices. Command injection can occur in "upload tftp syslog" and "upload tftp configuration" in the CLI via a crafted filename...
CVE-2020-29382
PUBLISHED: 2020-11-29
An issue was discovered on V-SOL V1600D V2.03.69 and V2.03.57, V1600G1 V2.0.7 and V1.9.7, and V1600G2 V1.1.4 OLT devices. A hardcoded RSA private key (specific to V1600D, V1600G1, and V1600G2) is contained in the firmware images.