Tag Archives: CVE-2013-0422

Gong Da Exploit Kit Add Java CVE-2013-1493 & IE CVE-2012-4792 & IE CVE-2012-4969 Support

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Like other Exploit Kits, Gong Da has add support for Oracle Java CVE-2013-1493 vulnerability, fixed in Oracle Java 6 Update 17, has also add support for Microsoft Internet Explorer CVE-2012-4969 and CVE-2012-4792 vulnerabilities, fixed in an emergency patch in September 2012 and January 2013.

Here is the new code for CVE-2013-1493.

Capture d’écran 2013-04-14 à 23.39.38

And here the new code for CVE-2012-4792 (aka 4792.html) and CVE-2012-4969 (aka payload.html).

Capture d’écran 2013-04-14 à 23.39.48

Also a new variant of CVE-2012-1889 (xml.html) has been introduced, reducing the detection rate by anti-viruses.

Capture d’écran 2013-04-14 à 23.40.15

As always this new version of Gong Da Exploit Kit has been discovered on a Korean web site.

Gong Da Pack has involve to the following diagram.

Gong Da EK 1.5

Here under some information s regarding the different files:

Normally Gong Da was used against gamers, but this time the loaded malware seem to be different (analysis on ThreatExpert)

Gong Da / Gondad Exploit Pack Add Flash CVE-2013-0634 Support

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If you are working in computer security and still don’t have heard about the latest Adobe Flash 0days, aka CVE-2013-0633 and CVE-2013-0634, then you should change of job ! These vulnerabilities were found exploited in targeted attacks through spear phishing email messages targeting several industries including the aerospace one.

One of the e-email attached Word document was using the 2013 IEEE Aerospace Conference schedule, and another reported sample was related to online payroll system of ADP US company, to exploit CVE-2013-0633. I wrote a complete blog post regarding this campaign 2 weeks ago.

Adobe fixed the vulnerabilities in APSB13-04 the 7 February, but the vulnerabilities were not found massively exploited in Exploit Kits. Also there was a confusion,  by anti-virus vendors and security researchers, regarding CVE-2013-0633 and CVE-2013-0634 detection. But as mentioned in Adobe APSB13-04 CVE-2013-0633 was only exploited by been embedded in Word documents and CVE-2013-0634 was exploited through HTML web pages and by been embedded in Word documents.

So as nobody as seen CVE-2013-0633 working outside a Word document, I will suppose that the vulnerability I discovered exploited in Gong Da exploit kit is potentially a fork of CVE-2013-0633 or could be CVE-2013-0634. Colleagues, you are welcome for comments 🙂

Here is the new code in Gong Da exploit kit.

Capture d’écran 2013-02-25 à 23.29.30

If you take a look at the ActionScript of “myrF03.swf” (506fe8f82ea151959c5160bc40da25b5) you will see some similarities with CVE-2013-0633, like the “ByteArrayAsset” mentioned by MalwareMustDie, or the well-known “LadyBoyle” function.

Capture d’écran 2013-02-26 à 00.10.49

Capture d’écran 2013-02-26 à 00.11.03

This new version was discovered on “hxxp://www.jhtyhtrsgr.com/yymex/index.html” a web site how is actually still online.

Capture d’écran 2013-02-25 à 23.29.04

“jhtyhtrsgr.com” is hosted on 69.197.61.29, in US and this domain name was created the 22 Feb 2013 with registration informations located in China and the following contact “jing yan ([email protected]) – GuangMing yanjing“.

The “index.html” file containing JavaScript code obfuscated by “JSXX VIP JS Obfuscator“, but traditional traces if this obfuscator are no more available.

After de-obfuscation of the “index.html” file you can see that Gong Da Pack has involve to the following diagram.

Gong Da EK 1.4 - 2

Here under some information s regarding the different files:

  • vQSopE2.jpg (aka CVE-2011-3544) : 10/46 on VirusTotal.com
  • ulxzBc7.jpg (aka CVE-2012-0507) : 11/45 on VirusTotal.com
  • MQnA3.jpg (aka CVE-2012-1723) : 18/46 on VirusTotal.com
  • eATBNfg1.jpg (aka CVE-2012-4681) : 29/46 on VirusTotal.com
  • tkPfaMz7.jpg (aka CVE-2012-5076) : 14/46 on VirusTotal.com
  • iOiezo6.jpg (aka CVE-2013-0422): 19/46 on VirusTotal.com
  • YPVTz8.html (aka CVE-2012-1889): 14/46 on VirusTotal.com
  • vQSopE2.html (aka CVE-2012-1889): 12/46 on VirusTotal.com
  • myrFO3.swf (aka a fork of CVE-2013-0633 CVE-2013-0634): 8/46 on VirusTotal.com

Here under a demonstration video of CVE-2013-0633 CVE-2013-0634 without been embeded in a Word document.

Updates:

After investigation from @unixfreaxjp, it seem that the exploited vulnerability is CVE-2013-0634 and not CVE-2013-0633.

Facebook, Apple & Twitter Watering Hole Attack Additional Informations

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Update: Some worrying information’s at the bottom of the post.

As reported by Ars Technica, the 15th February, Facebook was victim of a watering hole attack, involving a “popular mobile developer Web forum“. The attack was using a Java 0day that has been urgently patched, in Oracle Java CPU of first February, by version 7 update 11 and version 6 update 39.

Ars Technica also pointed that the attack had occur during the same timeframe as the hack that exposed cryptographically hashed passwords at Twitter. Also Twitter was encouraging, the first February, users to disable Java in their browsers. 250 000 user accounts was compromised during the Twitter breach.

Four days after the news on Facebook, the 19 February, Reuters also mentioned Apple as a victim of the Oracle Java 0day. The same “popular mobile developer Web forum” was mentioned, but with the precision that this website is a “popular iPhone mobile developer Web forum”. People briefed on the case said that hundreds of companies were affected by this Java 0day, including defense contractors.

Another interesting fact is that Apple had blacklist Java Web plug-in, a second time in a month, the 31 January, through an update to Xprotect, the Mac OS X “anti-malware” system. Surely a reaction the breach reported in the press 19 days later.

Today, Ars Technica released the name of the “popular iPhone mobile developer Web forum”, aka www.iphonedevsdk.com. Now we can gather some information’s related to this watering hole attack.

On urlQuery we can find an interesting submission, the 23 January, who reveal that some Java code was involved during the visit of the web site.

deployJavaPlugin

On JSUNPACK we can find another interesting submission, the 22 January, related to the www.iphonedevsdk.com. This submission reveals another website who is min.liveanalytics.org with URL “min.liveanalytics.org/cache.js?1358893681579“. The “cache.js” JavaScript was no more present at this date.

liveanalytics.org domain name was created the 8 December October 2012, through Public Domain Registry registrar. All contact information’s are hidden behind PrivacyProtect.org. Privacy Protection ensures that private information of domain owners are not published by replacing all the publicly visible contact details with alternate contact information.

But going back on the first urlQuery submission, we can see that www.iphonedevsdk.com website was doing three requests to min.liveanalytics.org website.

First call was to “/cache.js?1358897354865” JavaScript with a date of “Tue, 22 Jan 2013 23:21:31 GMT“. “1358897354865” return the number of milliseconds since 1970/01/01.

min-liveanalytics-org-cache-js

Second call was to “/jquery.js?ummrznjf” JavaScript with the same date.

jmin-liveanalytics-org-query-js

Third call was to “empty.htm” with additional parameters who are “empty.htm?id=0&ts=X&n=fp&s=Y“. In the following screenshot you will se that X value of ts variable return the number of milliseconds since 1970/01/01. Also in the following screenshot you will see a base64-encoded string:

eyJicm93c2VyIjoiRmlyZWZveCIsInVhIjoiTW96aWxsYSU1Qy81LjAlMjAlMjhXaW5kb3dzJTNCJTIwVSUzQiUyMFdpbmRvd3MlMjBOVCUyMDYuMSUzQiUyMGVuLVVTJTNCJTIwcnYlM0ExLjkuMi4xMyUyOSUyMEdlY2tvJTVDLzIwMTAxMjAzJTIwRmlyZWZveCU1Qy8zLjYuMTMiLCJwcm9kdWN0IjoiR2Vja28iLCJwbHVnaW5zIjp7Ik1vemlsbGElMjBEZWZhdWx0JTIwUGx1Zy1pbiI6eyJpbnN0YWxsZWQiOnRydWUsInZlcnNpb24iOiIxLjAuMC4xNSJ9LCJTaG9ja3dhdmUlMjBGbGFzaCI6eyJpbnN0YWxsZWQiOnRydWUsInZlcnNpb24iOiIxMC4wLjQ1LjIifSwiSmF2YSUyOFRNJTI5JTIwUGxhdGZvcm0lMjBTRSUyMDYlMjBVMjYiOnsiaW5zdGFsbGVkIjp0cnVlLCJ2ZXJzaW9uIjoiNi4wLjI2MC4zIn0sIkphdmElMjBEZXBsb3ltZW50JTIwVG9vbGtpdCUyMDYuMC4yNjAuMyI6eyJpbnN0YWxsZWQiOnRydWUsInZlcnNpb24iOiI2LjAuMjYwLjMifSwiQWRvYmUlMjBBY3JvYmF0Ijp7Imluc3RhbGxlZCI6dHJ1ZSwidmVyc2lvbiI6IjguMC4wLjQ1NiJ9LCJNaWNyb3NvZnQlQUUlMjBEUk0iOnsiaW5zdGFsbGVkIjp0cnVlLCJ2ZXJzaW9uIjoiOS4wLjAuNDUwMyJ9LCJXaW5kb3dzJTIwTWVkaWElMjBQbGF5ZXIlMjBQbHVnLWluJTIwRHluYW1pYyUyMExpbmslMjBMaWJyYXJ5Ijp7Imluc3RhbGxlZCI6dHJ1ZSwidmVyc2lvbiI6IjMuMC4yLjYyOSJ9LCJhY3JvYmF0Ijp7Imluc3RhbGxlZCI6ZmFsc2UsInZlcnNpb24iOm51bGx9LCJmbGFzaCI6eyJpbnN0YWxsZWQiOnRydWUsInZlcnNpb24iOiIxMC4wLjQ1LjIifSwic2hvY2t3YXZlIjp7Imluc3RhbGxlZCI6ZmFsc2UsInZlcnNpb24iOm51bGx9LCJTaWx2ZXJsaWdodCUyMFBsdWctSW4iOnsiaW5zdGFsbGVkIjpmYWxzZSwidmVyc2lvbiI6bnVsbH0sIndtcCI6eyJpbnN0YWxsZWQiOmZhbHNlLCJ2ZXJzaW9uIjpudWxsfSwicmVhbCI6eyJpbnN0YWxsZWQiOmZhbHNlLCJ2ZXJzaW9uIjpudWxsfSwiamF2YSI6eyJpbnN0YWxsZWQiOnRydWUsInZlcnNpb24iOiIxLjYuMF8yNiJ9fX0=

Decoded this value is quiet interesting:

{"browser":"Firefox","ua":"Mozilla%5C/5.0%20%28Windows%3B%20U%3B%20Windows%20NT%206.1%3B%20en-US%3B%20rv%3A1.9.2.13%29%20Gecko%5C/20101203%20Firefox%5C/3.6.13","product":"Gecko","plugins":{"Mozilla%20Default%20Plug-in":{"installed":true,"version":"1.0.0.15"},"Shockwave%20Flash":{"installed":true,"version":"10.0.45.2"},"Java%28TM%29%20Platform%20SE%206%20U26":{"installed":true,"version":"6.0.260.3"},"Java%20Deployment%20Toolkit%206.0.260.3":{"installed":true,"version":"6.0.260.3"},"Adobe%20Acrobat":{"installed":true,"version":"8.0.0.456"},"Microsoft%AE%20DRM":{"installed":true,"version":"9.0.0.4503"},"Windows%20Media%20Player%20Plug-in%20Dynamic%20Link%20Library":{"installed":true,"version":"3.0.2.629"},"acrobat":{"installed":false,"version":null},"flash":{"installed":true,"version":"10.0.45.2"},"shockwave":{"installed":false,"version":null},"Silverlight%20Plug-In":{"installed":false,"version":null},"wmp":{"installed":false,"version":null},"real":{"installed":false,"version":null},"java":{"installed":true,"version":"1.6.0_26"}}}

min-liveanalytics-org-empty-htm

These kinds of behaviors make me think to a statistic backend like Jsbug, but I don’t have enough information’s to validate my doubts.

By doing some additional researches on urlQuery, regarding min.liveanalytics.org, we can find a submission dating from the 23 January with one screenshot. And by doing also additional researches on urlQuery, regarding www.iphonedevsdk.com, we can observe that min.liveanalytics.org was down the 24 January.

down

Now let try other occurrences for www.iphonedevsdk.com or min.liveanalytics.org in search engines & search engines caches. No luck, Google and his cache are not revealing any information’s, same for Bing and other popular search engines. But WayBack Machine is providing a cached version of www.iphonedevsdk.com for the 15 January, and, and you got it Google Chrome is presenting a nice warning screen regarding min.liveanalytics.org 😉

Capture d’écran 2013-02-20 à 02.47.11

It is confirming us that this website was hosting some malware and that www.iphonedevsdk.com was including JavaScript calls to min.liveanalytics.org the 15 January, date of the Wayback Machine capture. If you take a look at the source code of cached version of www.iphonedevsdk.com you can see this, a nice JavaScript inclusion.

Capture d’écran 2013-02-20 à 00.28.33

So we have a timeline associated with this domain:

  • Domain name was registered the 8 December October with hidden information’s
  • WayBack Machine cached version of 7 December is not infected.
  • WayBack Machine report us that the website was infected the 15 January
  • urlQuery & JSUNPACK report us that the website was up the 22/23 January
  • urlQuery report us that the website was down the 24 January

Another interesting timeline is the Oracle Java patch and life cycle:

  • 11 December 2012: Oracle release, through a CPU, Java SE 7 Update 10 who introduced the levels of security for applet execution.
  • 13 January 2013: Oracle release an alert and update, Java SE 7 Update 11, for a Java 0day able to bypass the security manager.
  • 1 February 2013: Oracle release, through an out-of-band CPU, Java SE 7 Update 13, in order to fix a 0day exploited in the wild.

As you can see, Java SE 7 Update 10, released the 11 December, has introduce the levels of security (“Medium” by default) and bunch of pop-ups, who are warning you about the trust of an applet. Java SE 7 Update 11, released the 13 January, has force the level of security from “Medium” to “High“. With the “High” setting, the user is always prompted before any unsigned Java applet or Java Web Start application is run.

What I can suppose regarding these timelines:

  1. First, the victims of this watering hole campaign didn’t have potentially updated to the latest version.
  2. Second, the victims of this watering hole campaign did have potentially update to JSE 7U11, but have not change the default security level from “Medium” to “High“, despite all the history in Java 0days and advises of security experts.
  3. Third, the victims, have potentially detect the attack when JSE 7U13 was out, because the “High” security level shown them some unusual applet execution on the “popular iPhone mobile developer Web forum”.

Was this campaign a highly targeted attack? I don’t think so, why because Oracle Java has a long history of 0days, and serious companies like Twitter, Facebook and Apple should have disable Java Web Start application for non trusted applets since a while.

Updates

F-Secure has provide in a blog post 2 other domain names involved in the Facebook, Apple and Twitter compromise, this domain name are:

  • cloudbox-storage.com
  • digitalinsight-ltd.com

By investigating on these domain names, I found some worrying information’s. If these information’s are confirmed then the story is complete different and could have a bigger impact.

“digitalinsight-ltd.com” domain name was registered the 2012-03-22. By doing some Google dorks we can find these informations:

A post on Fedoraforum.org, dating from 2012-07-14 mentioning this domain name… and a user of the forum wonder why a JavaScript inclusion is done to this domain.

fedora-forum

If you take a look on Wayback Machine, you can find a cached version from 2012-07-12, that makes your Google Chrome screaming….

fedora-forum-alert

And what can we find in the source code of the FedoraForum webpage!!!!! A similar JavaScript inclusion as for www.iphonedevsdk.com also calling a “cache.js” script….

fedora-forum-source-code

We can also found a JSUNPACK submission, dating from 2012-10-22 with same source code….

And we can find some French guys complaining on a forum regarding a JavaScript inclusion to the same domain and script…. the 2012-09-29

Watering Hole Campaign Use Latest Java and IE Vulnerabilities

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Through a collaboration with (Jindrich Kubec (@Jindroush), Director of Threat Intelligence at avast! / Eric Romang (@eromang), independent security researcher), we can confirm that the watering hole campaigns are still ongoing, targeting multiple web high value web sites, including as example a major Hong Kong political party. We can also confirm that a second major Hong Kong political party is victim of this watering hole campaign.

This website is actually using the new version of the original Internet Explorer (CVE-2012-4792) vulnerability attack, patched in MS13-008, but right now it’s also using the latest Java (CVE-2013-0422) vulnerability, patched in Oracle Java 7 Update 11.

We will provide you further details on the affected web sites after their cleaning.

Chinese language version of the targeted web site is doing a remote javascript inclusion to “hxxp://www.[REDACTED].org/board/data/m/m.js“.

malicious-javascript-inclusion

This website is a legitimate compromised website used for hosting the exploit files, hosted in South Korea.

This include file uses the well-known “deployJava” function, aka “deployJava.js“, and creates a cookie “Somethingeeee” with one day expiration date. This cookie is quite strange and it’s also possible to find it in years old exploits, which suggests this is only a part of greater, long-going operation.

mt.html-file-2

If Internet Explorer 8 is used , an iframe is load from”hxxp://www.[REDACTED].org/board/data/m/mt.html” file. Otherwise and if Oracle Java is detected, an iframe will load “hxxp://www.[REDACTED].org/board/data/m/javamt.html“.

Analysis of “mt.html“

“mt.html” (d85e34827980b13c9244cbcab13b35ea) file is an obfuscated Javascript file which attempts to exploit the latest Internet Explorer vulnerability, CVE-2012-4792, fixed in MS13-008 and provided by Microsoft Monday morning.

https://www.virustotal.com/file/58588ce6d0a1e042450946b03fa4cd92ac1b4246cb6879a7f50a0aab2a84086a/analysis/ (avast detects this code as JS:Bogidow-A [Expl] through Script Shield component).

Comparing to the original CFR and Capstone Turbine versions, this code is not targeting certain browser supported language, but the code is based on the version used on CFR with “boy” and “girl” patterns.

Traditional “today.swf” has been replaced with “logo1229.swf” (da0287b9ebe79bee42685510ac94dc4f), “news.html” has been replaced with “DOITYOUR02.html” (cf394f4619db14d335dde12ca9657656) and “robots.txt” has been replaced with “DOITYOUR01.txt” (a1f6e988cfaa4d7a910183570cde0dc0). The traditional dropper “xsainfo.jpg” is now embedded in the “mt.html” file and obfuscated in the Javascript.

The executable file can be extracted from the string by cutting of first 13 characters, converting hex chars to binary and xoring the whole binary blob with 0xBF. Resulting file with SHA256 CE6C5D2DCF5E9BDECBF15E95943F4FFA845F8F07ED2D10FD6E544F30A9353AD2 is RAT which is communicating with a domain hosted in Hong Kong by New World Telecom.

Analysis of “javamt.html“

“javamt.html” (b32bf36160c7a3cc5bc765672f7d6f2c) is checking if Oracle Java 7 is present, if yes latest Java vulnerability, CVE-2013-0422, will be executed through “AppletHigh.jar” (521eab796271254793280746dbfd9951). If Oracle Java 6 is present, “AppletLow.jar” (2062203f0ecdaf60df34b5bdfd8eacdc) will exploit CVE-2011-3544. Both these applets contain the very same binary mentioned above (unencrypted).

javamt.html-file

Conclusion

As you see, the watering hole campaign still continues, but has evolved in form but also by using the latest Oracle Java vulnerability. There is just one advise: patch, patch, patch… and see you soon.