Posts Tagged: Holdsecurity.com


3
Nov 17

2nd Breach at Verticalscope Impacts Millions

For the second time in as many years, hackers have compromised Verticalscope.com, a Canadian company that manages hundreds of popular Web discussion forums totaling more than 45 million user accounts. Evidence of the breach was discovered just before someone began using that illicit access as a commercial for a new paid search service that indexes consumer information exposed in corporate data breaches.

Toronto-based Verticalscope runs a network of sites that cater to automotive, pets, sports and technology markets. Verticalscope acknowledged in June 2016 that a hacking incident led to the siphoning of 45 million user accounts. Now, it appears the company may have been hit again, this time in a breach involving at least 2.7 million user accounts.

On Thursday, KrebsOnSecurity was contacted by Alex Holden, a security researcher and founder of Hold Security. Holden saw evidence of hackers selling access to Verticalscope.com and to a host of other sites operated by the company.

Holden said at first he suspected someone was merely trying to resell data stolen in the 2016 breach. But that was before he contacted one of the hackers selling the data and was given screen shots indicating that Verticalscope.com and several other properties were in fact compromised with a backdoor known as a “Web shell.”

A backdoor “Web shell” discovered on Verticalscope.com this week.

With a Web shell installed on a site, anyone can remotely administer the site, upload and delete content at will, or dump entire databases of information — such as usernames, passwords, email addresses and Internet addresses associated with each account.

Holden said the intruders obfuscated certain details in the screenshots that gave away exactly where the Web shells were hidden on Verticalscope.com, but that they forgot to blur out a few critical details — allowing him to locate at least two backdoors on Veriticalscope’s Web site. He also was able to do the same with a second screen shot the hackers shared which showed a similar backdoor shell on Toyotanation.com, one of Verticalscope’s most-visited forums.

Reached for comment about the claims, Verticalscope said the company had detected an intrusion on six of its Web sites, including Toyotanation.com.

“The intrusion granted access to each individual website files,” reads a statement shared by Verticalscope. “Out of an abundance of caution, we have removed the file manager, expired all passwords on the 6 websites in question, added the malicious file pattern and attack vector to our detection tools, and taken additional steps to lock down access.”

Verticalscope said the other forums impacted included Jeepforum.com — the company’s second most-popular site; and watchuseek.com, a forum for wristwatch enthusiasts. Continue reading →


16
Mar 15

‘AntiDetect’ Helps Thieves Hide Digital Fingerprints

As a greater number of banks in the United States shift to issuing more secure credit and debit cards with embedded chip technology, fraudsters are going to direct more of their attacks against online merchants. No surprise, then, that thieves increasingly are turning to an emerging set of software tools to help them evade fraud detection schemes employed by many e-commerce companies.

Every browser has a relatively unique “fingerprint” that is shared with Web sites. That signature is derived from dozens of qualities, including the computer’s operating system type, various plugins installed, the browser’s language setting and its time zone. Banks can leverage fingerprinting to flag transactions that occur from a browser the bank has never seen associated with a customer’s account.

Payment service providers and online stores often use browser fingerprinting to block transactions from browsers that have previously been associated with unauthorized sales (or a high volume of sales for the same or similar product in a short period of time).

In January, several media outlets wrote about a crimeware tool called FraudFox, which is marketed as a way to help crooks sidestep browser fingerprinting. However, FraudFox is merely the latest competitor to emerge in a fairly established marketplace of tools aimed at helping thieves cash out stolen cards at online merchants.

Another fraudster-friendly tool that’s been around the underground hacker forums even longer is called Antidetect. Currently in version 6.0.0.1, Antidetect allows users to very quickly and easily change components of the their system to avoid browser fingerprinting, including the browser type (Safari, IE, Chrome, etc.), version, language, user agent, Adobe Flash version, number and type of other plugins, as well as operating system settings such as OS and processor type, time zone and screen resolution.

Antidetect is marketed to fraudsters involved in ripping off online stores.

Antidetect is marketed to fraudsters involved in ripping off online stores.

The seller of this product shared the video below of someone using Antidetect along with a stolen credit card to buy three different downloadable software titles from gaming giant Origin.com. That video has been edited for brevity and to remove sensitive information; my version also includes captions to describe what’s going on throughout the video. Continue reading →