Posts Tagged: Cool Exploit Kit


16
Jan 13

New Java Exploit Fetches $5,000 Per Buyer

Less than 24 hours after Oracle patched a dangerous security hole in its Java software that was being used to seize control over Windows PCs, miscreants in the Underweb were already selling an exploit for a different and apparently still-unpatched zero-day vulnerability in Java, KrebsOnSecurity has learned.

javared

Update, Apr. 2, 2:57 p.m. ET: This sales thread turned out to be an elaborate hoax designed by a cybercrime forum administrator to learn the screen name I was using to browse exclusive sections of his forum. See this story for more information on that.

Original story:

On Sunday, Oracle rushed out a fix for a critical bug in Java that had been folded into exploit kits, crimeware made to automate the exploitation of computers via Web browser vulnerabilities. On Monday, an administrator of an exclusive cybercrime forum posted a message saying he was selling a new Java 0day to a lucky two buyers. The cost: starting at $5,000 each.

The hacker forum admin’s message, portions of which are excerpted below, promised weaponized and source code versions of the exploit. This seller also said his Java 0day — in the latest version of Java (Java 7 Update 11) — was not yet part of any exploit kits, including the Cool Exploit Kit I wrote about last week that rents for $10,000 per month. From his sales pitch:

“New Java 0day, selling to 2 people, 5k$ per person

And you thought Java had epically failed when the last 0day came out. I lol’d. The best part is even-though java has failed once again and let users get compromised… guess what? I think you know what I’m going to say… there is yet another vulnerability in the latest version of java 7. I will not go into any details except with seriously interested buyers.

Code will be sold twice (it has been sold once already). It is not present in any known exploit pack including that very private version of [Blackhole] going for 10$k/month. I will accepting counter bids if you wish to outbid the competition. What you get? Unencrypted source files to the exploit (so you can have recrypted as necessary, I would warn you to be cautious who you allow to encrypt… they might try to steal a copy) Encrypted, weaponized version, simply modify the url in the php page that calls up the jar to your own executable url and you are set. You may pm me.” Continue reading →


7
Jan 13

Crimeware Author Funds Exploit Buying Spree

The author of Blackhole, an exploit kit that booby-traps hacked Web sites to serve malware, has done so well for himself renting his creation to miscreants that the software has emerged as perhaps the most notorious and ubiquitous crimeware product in the Underweb. Recently, however, the author has begun buying up custom exploits to bundle into a far more closely-held and expensive exploit pack, one that appears to be fueling a wave of increasingly destructive online extortion schemes.

Cool Exploit Kit.

Cool Exploit Kit.

An exploit pack is a software toolkit that gets injected into hacked or malicious sites, allowing the attacker to foist a kitchen sink full of browser exploits on visitors. Those visiting such sites with outdated browser plugins may have malware silently installed. In early October  2012, security researchers began noticing that a new exploit pack called Cool Exploit Kit was showing up repeatedly in attacks from “ransomware,” malicious software that holds PCs hostage in a bid to extract money from users.

Kafeine,” a French researcher and blogger who has been tracking the ties between ransomware gangs and exploit kits, detailed Cool’s novel use of a critical vulnerability in Windows (CVE-2011-3402) that was first discovered earlier in the year in the Duqu computer worm. Duqu is thought to be related to Stuxnet, a sophisticated cyber weapon that experts believe was designed to sabotage Iran’s nuclear program.

About a week after Kafeine highlighted the Duqu exploit’s use in Cool, the same exploit showed up in Blackhole. As Kafeine documented in another blog post, he witnessed the same thing happen in mid-November after he wrote about a never-before-seen exploit developed for a Java vulnerability (CVE-2012-5076) that Oracle patched in October. Kafeine said this pattern prompted him to guess that Blackhole and Cool were the work of the same author or malware team.

“It seems that as soon as it is publicly known [that Cool Exploit Kit] is using a new exploit, that exploit shows up in Blackhole,” Kafeine said in an interview with KrebsOnSecurity.

As detailed in an excellent analysis by security firm Sophos, Blackhole is typically rented to miscreants who pay for the use of the hosted exploit kit for some period of time. A three-month license to use Blackhole runs $700, while a year-long license costs $1,500. Blackhole customers also can take advantage of a hosting solution provided by the exploit kit’s proprietors, which runs $200 a week or $500 per month.

Blackhole is the brainchild of a crimeware gang run by a miscreant who uses the nickname “Paunch.” Reached via instant message, Paunch acknowledged being responsible for the Cool kit, and said his new exploit framework costs a whopping $10,000 a month.

At first I thought Paunch might be pulling my leg, but that price tag was confirmed in a discussion by members of a very exclusive underground forum. Not long after Kafeine first wrote about Cool Exploit Kit, an associate of Paunch posted a message to a semi-private cybercrime forum, announcing that his team had been given an initial budget of $100,000 to buy unique Web browser exploits, as well as information on unpatched software flaws. Here is a portion of that post, professionally translated from Russian:

Continue reading →