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.

Attacks/Breaches

2/19/2014
01:34 PM
50%
50%

New Zeus Variant Targets Salesforce.com

New attack shows the adaptability of Zeus and the challenges of policing an ever-expanding network perimeter

As the saying goes, the one constant in life is change. In the world of cybersecurity, few pieces of malware symbolize this more than Zeus.

Best known as a banking Trojan, a recently discovered attack shows that Zeus has turned a new page. Instead of going after banking credentials, this new version is focused on software-as-a-service (SaaS) applications. According to SaaS security vendor Adallom, the malware was targeting user credentials for Salesforce.com in what appears to be a targeted attack that began on a computer in an employee's home.

The situation was uncovered a few weeks ago when an alert was triggered for an Adallom customer's Salesforce.com instance after a single user performed hundreds of view operations in a short period of time. The subsequent investigation revealed that the behavior was traced to a home computer running Windows XP and an old version of Internet Explorer. The employee had been using the computer to catch up on work during off-hours.

A malware scan uncovered a Zeus variant configured to detect Salesforce.com authenticated sessions instead of banking sites. The variant was designed to crawl the site and create a real-time copy of the user's Salesforce.com instance. A copy of the temporary folder that was created contained all the information from the company account.

"This looks like a targeted attack against the company, cleverly targeting the employee home instead of the enterprise – thus bypassing the company controls," says Ami Luttwak, co-founder and CTO of Adallom. "This was probably just the first step, using the Zeus Web inject capabilities they could have used the same tactics as in the banking sites attacks and ask the user to enter more information regarding his company credentials or send out messages in his name."

"This version of Zeus seems hardcoded for this specific attack; we didn't yet see configuration pack circling around for Salesforce in general," he says. "However, the configuration itself is trivial --- the adaptability of Zeus and frankly any other Zeus variant to these scenarios is frightening, all existing Zeus bots can be turned against SaaS apps in a simple matter of a configuration change. In fact, the security of banking sites is years ahead of SaaS applications so makes them much easier prey."

So far, it is not known how the computer was initially infected. But the fact that the computer was not a corporate device underscores the challenges organizations are facing in the age of bring-your-own-device and an extended perimeter.

"I can only come to the conclusion that companies are either ignorant of, or oblivious to, the fact that along with SaaS adoption comes BYOD," says Luttwak. "The SaaS applications are themselves safe, but the implications of using them from unmanaged devices are either disregarded or unaddressed, at least pragmatically so. I think we can agree that asking employees to connect to Salesforce.com over a corporate VPN is unpragmatic. The core problem is that security teams do not feel accountable for the security of SaaS applications."

"The SaaS/cloud shared responsibility model means that the provider is responsible for securing the infrastructure while the company is responsible for securing account activities," he adds.

Have a comment on this story? Please click "Add Your Comment" below. If you'd like to contact Dark Reading's editors directly, send us a message. Brian Prince is a freelance writer for a number of IT security-focused publications. Prior to becoming a freelance reporter, he worked at eWEEK for five years covering not only security, but also a variety of other subjects in the tech industry. Before that, he worked as a ... View Full Bio

Comment  | 
Print  | 
More Insights
Comments
Newest First  |  Oldest First  |  Threaded View
Edge-DRsplash-10-edge-articles
7 Old IT Things Every New InfoSec Pro Should Know
Joan Goodchild, Staff Editor,  4/20/2021
News
Cloud-Native Businesses Struggle With Security
Robert Lemos, Contributing Writer,  5/6/2021
Commentary
Defending Against Web Scraping Attacks
Rob Simon, Principal Security Consultant at TrustedSec,  5/7/2021
Register for Dark Reading Newsletters
White Papers
Video
Cartoon
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-2020-16632
PUBLISHED: 2021-05-15
A XSS Vulnerability in /uploads/dede/action_search.php in DedeCMS V5.7 SP2 allows an authenticated user to execute remote arbitrary code via the keyword parameter.
CVE-2021-32073
PUBLISHED: 2021-05-15
DedeCMS V5.7 SP2 contains a CSRF vulnerability that allows a remote attacker to send a malicious request to to the web manager allowing remote code execution.
CVE-2021-33033
PUBLISHED: 2021-05-14
The Linux kernel before 5.11.14 has a use-after-free in cipso_v4_genopt in net/ipv4/cipso_ipv4.c because the CIPSO and CALIPSO refcounting for the DOI definitions is mishandled, aka CID-ad5d07f4a9cd. This leads to writing an arbitrary value.
CVE-2021-33034
PUBLISHED: 2021-05-14
In the Linux kernel before 5.12.4, net/bluetooth/hci_event.c has a use-after-free when destroying an hci_chan, aka CID-5c4c8c954409. This leads to writing an arbitrary value.
CVE-2019-25044
PUBLISHED: 2021-05-14
The block subsystem in the Linux kernel before 5.2 has a use-after-free that can lead to arbitrary code execution in the kernel context and privilege escalation, aka CID-c3e2219216c9. This is related to blk_mq_free_rqs and blk_cleanup_queue.