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

11/24/2015
12:15 PM
Connect Directly
Twitter
RSS
E-Mail
50%
50%

Stealthy ModPOS Is 'Most Sophisticated PoS Malware' Ever

More than just a point-of-sale card scraper, it's modular malware, and every module is a rootkit.

Just in time for the holidays, researchers at iSIGHT Partners are warning retailers about ModPOS -- malware in their point-of-sale systems that is nearly impossible to detect, can do a whole lot more than just scrape customers' credit card data, and has already successfully breached U.S. retailers.

"This is by far the most sophisticated PoS malware I've ever seen," says Maria Noboa, senior threat analyst at iSight.

BlackPOS was behind the monster breach at Target, BackOff hit UPS and over a thousand others, and now new PoS malware like CherryPicker and AbaddonPOS have hit the scene. Yet, none of them have the same level of complexity and committment to stealth that ModPOS does.

"It took us two to three weeks just to determine it was malicious," says Noboa. It then took researchers several more weeks to pick ModPOS apart and figure out how it works. In comparison, it only took them about 20 minutes to reverse engineer CherryPicker, says Noboa.

[PoS malware proves that Cyber Monday isn't the only thing retailers and shoppers have to worry about over the holidays. Read "Black Friday Security: Brick-and-Mortar Retailers Have Cyber Threats Too."]

ModPOS is modular. In addition to the PoS card scraper module, it also has a keylogger, an uploader/downloader (with which it could add other pieces), and plug-ins for scraping credentials, and gathering local system and network information.

So, explains Noboa, if it compromises the point-of-sale system and finds that the retailer has wisely encrypted all of the cardholder data or stored it elsewhere, ModPOS can still find ways to make its attack fruitful for them and damaging to the target.

The code was written by someone with exceptional skill, says Noboa. "The shell code they use," she says, "are effectively full programs." They found one piece of shell code contained over 600 functions.

The malware is able to stay persistent and obfuscated because every one of those modules operates in kernel mode, so, "each one is a rootkit," says Noboa.

It's also difficult to detect because all hashes are unique to the victim system. So the researchers can't just hand out a list of hashes along with indicators of compromise, because it wouldn't do anybody any good.

The researchers have not found any evidence of anyone selling ModPOS or even discussing it on underground forums. 

"All of this points to [the malware] being a profit center for someone," says Noboa. They're making their money from use of the malware, not sale of it, and they're not interested in sharing.

All of this has helped ModPOS be quietly lucrative. iSight researchers believe the ModPOS attacks began as early as 2013, and have since stolen millions of credit and debit cards from unnamed U.S. retailers.

They don't know yet how it's being distributed right now or have a fix on the threat actor. They do say there are indications that point to Eastern Europe.

Sara Peters is Senior Editor at Dark Reading and formerly the editor-in-chief of Enterprise Efficiency. Prior that she was senior editor for the Computer Security Institute, writing and speaking about virtualization, identity management, cybersecurity law, and a myriad ... 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 7/6/2020
Ripple20 Threatens Increasingly Connected Medical Devices
Kelly Sheridan, Staff Editor, Dark Reading,  6/30/2020
DDoS Attacks Jump 542% from Q4 2019 to Q1 2020
Dark Reading Staff 6/30/2020
Register for Dark Reading Newsletters
White Papers
Video
Cartoon
Current Issue
How Cybersecurity Incident Response Programs Work (and Why Some Don't)
This Tech Digest takes a look at the vital role cybersecurity incident response (IR) plays in managing cyber-risk within organizations. Download the Tech Digest today to find out how well-planned IR programs can detect intrusions, contain breaches, and help an organization restore normal operations.
Flash Poll
The Threat from the Internetand What Your Organization Can Do About It
The Threat from the Internetand What Your Organization Can Do About It
This report describes some of the latest attacks and threats emanating from the Internet, as well as advice and tips on how your organization can mitigate those threats before they affect your business. Download it today!
Twitter Feed
Dark Reading - Bug Report
Bug Report
Enterprise Vulnerabilities
From DHS/US-CERT's National Vulnerability Database
CVE-2020-5595
PUBLISHED: 2020-07-07
TCP/IP function included in the firmware of Mitsubishi Electric GOT2000 series (CoreOS with version -Y and earlier installed in GT27 Model, GT25 Model, and GT23 Model) contains a buffer overflow vulnerability, which may allow a remote attacker to stop the network functions of the products or execute...
CVE-2020-5596
PUBLISHED: 2020-07-07
TCP/IP function included in the firmware of Mitsubishi Electric GOT2000 series (CoreOS with version -Y and earlier installed in GT27 Model, GT25 Model, and GT23 Model) does not properly manage sessions, which may allow a remote attacker to stop the network functions of the products or execute a mali...
CVE-2020-5597
PUBLISHED: 2020-07-07
TCP/IP function included in the firmware of Mitsubishi Electric GOT2000 series (CoreOS with version -Y and earlier installed in GT27 Model, GT25 Model, and GT23 Model) contains a null pointer dereference vulnerability, which may allow a remote attacker to stop the network functions of the products o...
CVE-2020-5598
PUBLISHED: 2020-07-07
TCP/IP function included in the firmware of Mitsubishi Electric GOT2000 series (CoreOS with version -Y and earlier installed in GT27 Model, GT25 Model, and GT23 Model) contains an improper access control vulnerability, which may which may allow a remote attacker tobypass access restriction and stop ...
CVE-2020-5599
PUBLISHED: 2020-07-07
TCP/IP function included in the firmware of Mitsubishi Electric GOT2000 series (CoreOS with version -Y and earlier installed in GT27 Model, GT25 Model, and GT23 Model) contains an improper neutralization of argument delimiters in a command ('Argument Injection') vulnerability, which may allow a remo...