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.

Cloud

10/10/2019
12:05 PM
Connect Directly
Twitter
LinkedIn
Google+
RSS
E-Mail
50%
50%

Magecart Attack on Volusion Highlights Supply Chain Dangers

Attackers compromised Volusion's Google Cloud environment to load malicious skimmer code onto more than 6,500 customer sites.

Magecart attackers have infiltrated cloud-based e-commerce provider Volusion to successfully infect at least 6,500 customer websites with malicious code designed to lift payment card information. To do this, they had to first break into Volusion's Google Cloud environment.

Volusion is the latest target of Magecart, a threat that was first spotted a decade ago but has been ramping up over the past couple of years as attackers explore new vectors for compromise and it becomes easier to rent a skimmer kit, track malicious activity, and automate attacks at scale. Skimmers have been detected on more than two million sites, RiskIQ reports.

"During our investigations of Magecart, we have found that the attackers seem more experienced and thoughtful than many other skimmer groups," Trend Micro researchers say in an interview with Dark Reading. "There are multiple Magecart actor groups who continually shift their tactics to improve their infection rates and revenue opportunities."

An attacker could launch a Magecart operation by purchasing an exploit and injecting malicious JavaScript onto a vulnerable e-commerce website. In the case of Volusion, attackers targeted the infrastructure of one company to compromise thousands of online stores' checkout pages. 

Volusion has issued a statement confirming it was alerted to a security incident and resolved the problem "within a few hours of notification." It has taken steps to help secure accounts and is working with authorities on the matter.

"A limited portion of customer information was compromised from a subset of our merchants," a spokesperson says. "This included credit card information, but not other associated personally identifying details. We are not aware of any fraudulent activity connected to this matter."

Marcel Afrahim, a security researcher with Check Point, first spotted a red flag on his virtual shopping trip to the Sesame Street Live Store. The store is built with Volusion's All-in-One E-commerce Website Builder; Volusion also provides the store's name servers. During checkout, he noticed a JavaScript file being loaded from storage.googleapis.com with the bucket name "volusionapi." It was the only external JavaScript being loaded from a random storage site.

As Afrahim explains, storage.googleapis.com is a Google Cloud Storage domain name for a file storage web service. Anyone can register, pick a bucket name, and serve their own content.

A closer look at this code revealed a script that was posting credit card information from the checkout page to another domain name and calling it "JavaScript Cookie." The code was masked as a simple API for handling cookies, but analysis revealed additional code with two sections. One reads the values entered in Credit Card fields; after a series of checks, it's encoded in Base64 and stored in "sessionStorage," which is cleared when a page session ends.

The second part of the script reads the stored data and posts it to the attackers' primary server: hxxps://volusion-cdn.com/analytics/beacon. As Afrahim points out, even an analyst may look past a domain name like this, designed to blend in with Volusion. A GET request to Volusion-Cdn[.]com redirects to a legitimate Volusion CDN. However, he discovered the domain was only registered on September 7 and has nothing in common with Volusion infrastructure or name servers.

"While it is not overly sophisticated, the actors behind this operation went through some lengthy steps to make the traffic look normal," Afrahim writes in a blog post on his findings. Further analysis revealed the Sesame Street Store is not the only one affected by the malicious JavaScript. Most likely, Afrahim says, any e-commerce website hosted on Volusion is running malicious code and sharing credit card input with the external attacker-controlled domain.

The Volusion incident can most likely be attributed to Magecart Group 6, also known for last year's attack on British Airways, says Jerome Segura, head of threat intelligence at Malwarebytes. "They target sites that generate a lot of transactions, which helps them maximize their attack in a short time frame," he explains.

Group 6 was recently identified as the FIN6 APT. Part of their tactics, techniques, and procedures involves creating exfiltration domains that mimic their victim, which aligns with their efforts to blend in and evade detection.

Service Providers Are Hot Targets
This isn't the first time that attackers have taken advantage of legitimate service providers to spread malicious code. Back in May, attackers injected obfuscated JavaScript into three marketing services to scrape information, including login data and credit card details, from thousands of websites. Anyone who visited a website that used the three tools was affected in the attack.

A September Magecart attack targeted the booking websites of chain-brand hotels, marking the second time Trend Micro saw attackers hitting e-commerce service providers instead of individual shops. In May, another skimming campaign hit the online stores of college campuses.

Adversaries are after the most accessible entry point. Many have targeted misconfigured AWS accounts because they're the most obvious opening that will likely be unnoticed, but ultimately they'll go after the vector that will give them the highest payout with the fewest resources.

Related Content:

Check out The Edge, Dark Reading's new section for features, threat data, and in-depth perspectives. Today's top story: "Can the Girl Scouts Save the Moon from Cyberattack?"

Kelly Sheridan is the Staff Editor at Dark Reading, where she focuses on cybersecurity news and analysis. She is a business technology journalist who previously reported for InformationWeek, where she covered Microsoft, and Insurance & Technology, where she covered financial ... View Full Bio
 

Recommended Reading:

Comment  | 
Print  | 
More Insights
Comments
Newest First  |  Oldest First  |  Threaded View
COVID-19: Latest Security News & Commentary
Dark Reading Staff 10/1/2020
Attacker Dwell Time: Ransomware's Most Important Metric
Ricardo Villadiego, Founder and CEO of Lumu,  9/30/2020
9 Tips to Prepare for the Future of Cloud & Network Security
Kelly Sheridan, Staff Editor, Dark Reading,  9/28/2020
Register for Dark Reading Newsletters
White Papers
Video
Cartoon
Current Issue
Special Report: Computing's New Normal
This special report examines how IT security organizations have adapted to the "new normal" of computing and what the long-term effects will be. Read it and get a unique set of perspectives on issues ranging from new threats & vulnerabilities as a result of remote working to how enterprise security strategy will be affected long term.
Flash Poll
How IT Security Organizations are Attacking the Cybersecurity Problem
How IT Security Organizations are Attacking the Cybersecurity Problem
The COVID-19 pandemic turned the world -- and enterprise computing -- on end. Here's a look at how cybersecurity teams are retrenching their defense strategies, rebuilding their teams, and selecting new technologies to stop the oncoming rise of online attacks.
Twitter Feed
Dark Reading - Bug Report
Bug Report
Enterprise Vulnerabilities
From DHS/US-CERT's National Vulnerability Database
CVE-2020-8109
PUBLISHED: 2020-10-01
A vulnerability has been discovered in the ace.xmd parser that results from a lack of proper validation of user-supplied data, which can result in a write past the end of an allocated buffer. This can result in denial-of-service. This issue affects: Bitdefender Engines version 7.84892 and prior vers...
CVE-2019-20902
PUBLISHED: 2020-10-01
Upgrading Crowd via XML Data Transfer can reactivate a disabled user from OpenLDAP. The affected versions are from before version 3.4.6 and from 3.5.0 before 3.5.1.
CVE-2019-20903
PUBLISHED: 2020-10-01
The hyperlinks functionality in atlaskit/editor-core in before version 113.1.5 allows remote attackers to inject arbitrary HTML or JavaScript via a Cross-Site Scripting (XSS) vulnerability in link targets.
CVE-2020-25288
PUBLISHED: 2020-09-30
An issue was discovered in MantisBT before 2.24.3. When editing an Issue in a Project where a Custom Field with a crafted Regular Expression property is used, improper escaping of the corresponding form input's pattern attribute allows HTML injection and, if CSP settings permit, execution of arbitra...
CVE-2020-25781
PUBLISHED: 2020-09-30
An issue was discovered in file_download.php in MantisBT before 2.24.3. Users without access to view private issue notes are able to download the (supposedly private) attachments linked to these notes by accessing the corresponding file download URL directly.