Posts Tagged: Carbanak


13
Aug 16

Visa Alert and Update on the Oracle Breach

Credit card industry giant Visa on Friday issued a security alert warning companies using point-of-sale devices made by Oracle‘s MICROS retail unit to double-check the machines for malicious software or unusual network activity, and to change passwords on the devices. Visa also published a list of Internet addresses that may have been involved in the Oracle breach and are thought to be closely tied to an Eastern European organized cybercrime gang.

VSA-oracle

The Visa alert is the first substantive document that tries to help explain what malware and which malefactors might have hit Oracle — and by extension many of Oracle’s customers — since KrebsOnSecurity broke news of the breach on Aug. 8. That story cited sources close to the investigation saying hackers had broken into hundreds of servers at Oracle’s retail division, and had completely compromised Oracle’s main online support portal for MICROS customers.

MICROS is among the top three point-of-sale vendors globally. Oracle’s MICROS division sells point-of-sale systems used at more than 330,000 cash registers worldwide. When Oracle bought MICROS in 2014, the company said MICROS’s systems were deployed at some 200,000+ food and beverage outlets, 100,000+ retail sites, and more than 30,000 hotels.

In short, tens of millions of credit cards are swiped at MICROS terminals monthly, and a breach involving the theft of credentials that might have granted remote access to even just a small percentage of those systems is potentially a big and costly problem for all involved.

So far, however, most MICROS customers are left scratching their heads for answers. A frequently asked questions bulletin (PDF) Oracle also released last Monday held little useful information. Oracle issued the same cryptic response to everyone who asked for particulars about how far the breach extended. “Oracle has detected and addressed malicious code in certain legacy MICROS systems.”

Oracle also urged MICROS customers to change their passwords, and said “we also recommend that you change the password for any account that was used by a MICROS representative to access your on-premises systems.”

One of two documents Oracle sent to MICROS customers and the sum total of information the company has released so far about the breach.

One of two documents Oracle sent to MICROS customers and the sum total of information the company has released so far about the breach.

Some technology and fraud experts, including Gartner Analyst Avivah Litan, read that statement highlighted in yellow above as an acknowledgement by Oracle that hackers may have abused credentials gained in the MICROS portal breach to plant malicious code on the point-of-sale devices run by an unknown number of MICROS customers.

“This [incident] could explain a lot about the source of some of these retail and merchant point-of-sale hacks that nobody has been able to definitively tie to any one point-of-sale services provider,” Litan told me last week. “I’d say there’s a big chance that the hackers in this case found a way to get remote access” to MICROS customers’ on-premises point-of-sale devices.”

Clearly, Visa is concerned about this possibility as well.

INDICATORS OF COMPROMISE

In my original story about the breach, I wasn’t able to reveal all the data I’d gathered about the apparent source of the attacks and attackers. A key source in that story asked that I temporarily delay publishing certain details of the investigation, specifically those known as indicators of compromise (IOCs). Basically, IOCs are list of suspect Internet addresses, domain names, filenames and other curious digital clues that are thought to connect the victim with its attacker.

I’ve been inundated all week with calls and emails from security experts asking for that very data, but sharing it wasn’t my call. That is, until yesterday (8/12/16), when Visa published a “merchant communication alert” to some customers. In that alert (PDF), Visa published IOCs that may be connected with the intrusion. These IOCs could be extremely useful to MICROS customers because the presence of Internet traffic to and from these online destinations would strongly suggest the organization’s point-of-sale systems may be similarly compromised.

Some of the addresses on this list from Visa are known to be associated with the Carbanak Gang, a group of Eastern European hackers that Russian security firm Kaspersky Lab estimates has stolen more than $1 billion from banks and retailers. Here’s the IOCs list from the alert Visa pushed out Friday:

VISA warned merchants to check their systems for any communications to and from these Internet addresses and domain names associated with a Russian organized cybercrime gang called "Carbanak."

Visa warned merchants to check their systems for any communications to and from these Internet addresses and domain names associated with a Russian organized cybercrime gang called “Carbanak.”

Thankfully, since at least one of the addresses listed above (192.169.82.86) matched what’s on my source’s list, the source agreed to let me publish the entire thing. Here it is. I checked my source’s list and found at least five Internet addresses that were seen in both the Oracle attack and in a Sept. 2015 writeup about Carbanak by ESET Security, a Slovakian antivirus and security company. [NB: If you are unskilled at safely visiting malicious Web sites and/or handling malware, it’s probably best not to visit the addresses in the above-linked list.]

Visa also mentioned a specific POS-malware threat in its alert called “MalumPOS.” According to researchers at Trend Micro, MalumPOS is malware designed to target point-of-sale systems in hotels and related industries. In fact, Trend found that MalumPOS is set up to collect data specifically from point-of-sale systems running on Oracle’s MICROS platform.

It should come as no surprise then that many of Oracle’s biggest customers in the hospitality industry are starting to make noise, accusing Oracle of holding back key information that could help MICROS-based companies stop and clean up breaches involving malware and stolen customer credit card data.

“Oracle’s silence has been deafening,” said Michael Blake, chief executive officer at HTNG, a trade association for hotels and technology. “They are still grappling and trying to answer questions on the extent of the breach. Oracle has been invited to the last three [industry] calls this week and they are still going about trying to reach each customer individually and in the process of doing so they have done nothing but given the lame advice of changing passwords.”

The hospitality industry has been particularly hard hit by point-of-sale compromises over the past two years. Last month, KrebsOnSecurity broke the news of a breach at Kimpton Hotels (Kimpton appears to run MICROS products, but the company declined to answer questions for this story).

Kimpton joins a long list of hotel brands that have acknowledged card breaches over the last year, including Trump Hotels (twice), Hilton, Mandarin Oriental, and White Lodging (twice), Starwood Hotels and Hyatt. In many of those incidents, thieves had planted malicious software on the point-of-sale devices at restaurants and bars inside of the hotel chains. And, no doubt, many of those cash registers were run on MICROS systems.

If Oracle doesn’t exactly know which — if any — of its MICROS customers had malware on their point-of-sale systems as a result of the breach, it may be because the network intruders didn’t have any reason to interact with Oracle’s customers via the MICROS portal after stealing usernames and passwords that would allow them to remotely access customer on-premises systems. In theory, at that point the fraudsters could have bypassed Oracle altogether from then on. Continue reading →


18
Jul 16

Carbanak Gang Tied to Russian Security Firm?

Among the more plunderous cybercrime gangs is a group known as “Carbanak,” Eastern European hackers blamed for stealing more than a billion dollars from banks. Today we’ll examine some compelling clues that point to a connection between the Carbanak gang’s staging grounds and a Russian security firm that claims to work with some of the world’s largest brands in cybersecurity.

The Carbanak gang derives its name from the banking malware used in countless high-dollar cyberheists. The gang is perhaps best known for hacking directly into bank networks using poisoned Microsoft Office files, and then using that access to force bank ATMs into dispensing cash. Russian security firm Kaspersky Lab estimates that the Carbanak Gang has likely stolen upwards of USD $1 billion — but mostly from Russian banks.

Image: Kaspersky

Image: Kaspersky

I recently heard from security researcher Ron Guilmette, an anti-spam crusader whose sleuthing has been featured on several occasions on this site and in the blog I wrote for The Washington Post. Guilmette said he’d found some interesting commonalities in the original Web site registration records for a slew of sites that all have been previously responsible for pushing malware known to be used by the Carbanak gang.

For example, the domains “weekend-service[dot]com” “coral-trevel[dot]com” and “freemsk-dns[dot]com” all were documented by multiple security firms as distribution hubs for Carbanak crimeware. Historic registration or “WHOIS” records maintained by Domaintools.com for all three domains contain the same phone and fax numbers for what appears to be a Xicheng Co. in China — 1066569215 and 1066549216, each preceded by either a +86 (China’s country code) or +01 (USA). Each domain record also includes the same contact address: “williamdanielsen@yahoo.com“.

According to data gathered by ThreatConnect, a threat intelligence provider [full disclosure: ThreatConnect is an advertiser on this blog], at least 484 domains were registered to the williamdanielsen@yahoo.com address or to one of 26 other email addresses that listed the same phone numbers and Chinese company.  “At least 304 of these domains have been associated with a malware plugin [that] has previously been attributed to Carbanak activity,” ThreatConnect told KrebsOnSecurity.

Going back to those two phone numbers, 1066569215 and 1066549216; at first glance they appear to be sequential, but closer inspection reveals they differ slightly in the middle. Among the very few domains registered to those Chinese phone numbers that haven’t been seen launching malware is a Web site called “cubehost[dot]biz,” which according to records was registered in Sept. 2013 to a 28-year-old Artem Tveritinov of Perm, Russia.

Cubehost[dot]biz is a dormant site, but it appears to be the sister property to a Russian security firm called Infocube (also spelled “Infokube”). The InfoKube web site — infokube.ru — is also registered to Mr. Tveritinov of Perm, Russia; there are dozens of records in the WHOIS history for infokube.ru, but only the oldest, original record from 2011 contains the email address atveritinov@gmail.com. 

That same email address was used to register a four-year-old profile account at the popular Russian social networking site Vkontakte for Artyom “LioN” Tveritinov from Perm, Russia. The “LioN” bit is an apparent reference to an Infokube anti-virus product by the same name. Continue reading →


16
Feb 15

The Great Bank Heist, or Death by 1,000 Cuts?

I received a number of media requests and emails from readers over the weekend to comment on a front-page New York Times story about an organized gang of cybercriminals pulling off “one of the largest bank heists ever.” Turns out, I reported on this gang’s activities in December 2014, although my story ran minus many of the superlatives in the Times piece.

The Times’ story, “Bank Hackers Steal Millions Via Malware,” looks at the activities of an Eastern European cybercrime group that Russian security firm Kaspersky Lab calls the “Carbanak” gang. According to Kaspersky, this group deployed malware via phishing scams to get inside of computers at more than 100 banks and steal upwards of USD $300 million — possibly as high as USD $1 billion.

Image: Kaspersky

Image: Kaspersky

Such jaw-dropping numbers were missing from a story I wrote in December 2014 about this same outfit, Gang Hacked ATMs From Inside Banks. That piece was based on similar research published (PDF) jointly by Dutch security firm Fox-IT and by Group-IB, a Russian computer forensics company. Fox-IT and Group-IB called the crime group “Anunak,” and described how the crooks sent malware laced Microsoft Office attachments in spear phishing attacks to compromise specific users inside targeted banks.

“Most cybercrime targets consumers and businesses, stealing account information such as passwords and other data that lets thieves cash out hijacked bank accounts, as well as credit and debit cards,” my December 2014 story observed. “But this gang specializes in hacking into banks directly, and then working out ingenious ways to funnel cash directly from the financial institution itself.”

I also noted that a source told me this group of hackers is thought to be the same criminal gang responsible for several credit and debit card breaches at major retailers across the United States, including women’s clothier Bebe Stores Inc., western wear store Sheplers, and office supply store Staples Inc.

Andy Chandler, Fox-IT’s general manager and senior vice president, said the group profiled in its December report and in the Kaspersky study are the same.

“Anunak or Carbanak are the same,” Chandler said. “We continue to track this organization but there are no major revelations since December. So far in 2015, the financial industry have been kept busy by other more creative criminal groups,” such as those responsible for spreading the Dyre and Dridex banking malware, he said. Continue reading →