Phishers Backdooring Phishing Pages to Scam One Another

There seems to be no such thing as a free phishing page these days, with phishers scamming one another at an alarming rate according to a recently published research entitled "There is No Free Phish:An Analysis of “Free” and Live Phishing Kits".

Cybercriminals attempting to scam other cybercriminals has been happening for years, with old school cases where backdoored malware tools such as crypters and binders are offered for free, or a newly released RAT whose client is in fact infected with a third-party malware. Realizing and definitely not enjoying the fact that the lowered entry barriers into cybercrime are empowering yesterday's script kiddies will malware kits that used to be utilized by a set of people who invested time and money into the process several years ago, this unethical competitive practice is only going to get more common. Backdooring phishing pages is one thing, backdooring entire web malware exploitation kits, next to the possibility to remotely exploit a competitor's command and control server is entirely another :

"Taking a more strategic approach, a cybercriminal wanting to scam another cybercriminal would backdoor a highly expensive web malware exploitation kit, then start distributing it for free, and in fact, there have been numerous cases when such kits have been distributed in such a fraudulent manner. The result is a total outsourcing of the process of coming up with ways to infect hundreds of thousands of users though client side exploits embedded or SQL injected at legitimate sites, and basically collecting the final output - the stolen E-banking data and the botnet itself."

What's to come in the long term? Why just backdoor the phishing page, when you can embedd it with a live exploit URL in an attempt to both, infect the cybercriminal about to use and obtain all of the already stolen virtual assets has has already stolen, and also, have a third-party maintain a blended attack campaign without even knowing it.

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Pinch Vulnerable to Remotely Exploitable Flaw

In the very same way a cybercrime analyst is reverse engineering and sandboxing a particular piece of malware in order to get a better understanding of who's being it, and how successful the campaign is once access to the command and control interface is obtained, cybercriminals themselves are actively reverse engineering the most popular crimeware kits, looking, and actually finding remotely exploitable vulnerabilities allowing them to competely hijack someone's command and control, and consequently, their botnet. The Zeus crimeware kit, which I've been discussing and analyzing for a while, is the perfect example of how once a popular underground kit start acting as the default crimeware kit, cybercriminals themselves start looking for vulnerabilities that they could take advantage of. And those who look, usually end up finding.

A remotely exploitable flaw allowing cybercriminals to remotely inject a web shell within another cybercriminal's web command and control interface of the popular Pinch crimeware that's been around VIP underground forums since June, 2007, is starting to receive the necessary attention from script kiddies catching up with the possibility of hijacking someone's malware campaign due to misconfigured command and control servers.

With the exploit now in the wild, retro cybercriminals still taking advantege of the ubiqutous command and control interface that could be easily used by other malware rathar than Pinch, "cybercriminals are advised" to randomize the default file name of the gate, and apply the appropriate directory permissions.
 

Monocultural insecurities are ironically started to emerge in the IT underground with the increasing commoditization of what used to be a proprietary web exploitation malware kit or a banker malware kit, allowing easy entry into the malware industry through the unregulated use of what some would refer to as an "advanced technology" that only a few cybercriminals used to have access to an year ago.  Just like legitimate software vendors, authors of crimeware kits are also trying to enforce their software licenses and forbidding any reverse engineering of their kits in order to enjoy the false feeling of security provided by the security through obscurity. The result? Cybercrime groups filing for bankruptcy unable to achieve a positive return on investment due to their intellectual property getting pirated and their inability to enforce the licenses that they issue to their customers.

We're definitely going to see more trivial, but then again, remotely exploitable vulnerabilities within popular crimeware kits, which can assist both the cybercrime analysts and naturally the cybercriminals themselves. For the time being, even the most sophisticated malware campaigns aren't fully taking advantage of the evasive and stealth tactics that the kits, or their common sense allows them to - let's see for how long.

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