ThreatFire Research Blog Home
 
 
« Shameless SEO Based on Jakarta Bombing Incident
P2P File Sharing and Limewire »

Out of Band Patch and Prevalent Client Side Exploitation

As out-of-band patches are released today, we are not yet seeing memory corruption attacks targeting these newly patched vulnerabilities that effect Internet Explorer 6,7, and 8. Nonetheless, be sure to visit the Microsoft updates site and patch your system soon.

Instead, ThreatFire continues to prevent prevalent attacks from malicious pages like those currently hosted on cxim-way. cn, where javascript identifies third party plugins on the system and attacks the user’s system accordingly. Pseudocode here:

while name = navigator.plugins[i].name

if((name.indexOf(”Adobe Acrobat”) != -1) || (name.indexOf(”Adobe PDF”) != -1))
then iframe src=”cache/readme.pdf
if(name.indexOf(”Foxit Reader”) != -1) then iframe src=”cache/update.pdf
if(name.indexOf(”Flash”) != -1) then iframe src=”cache/flash.swf

The resulting malicious payload is prevented by ThreatFire. “Load.exe” is pulled down from the site on a successfully compromised system, renamed to “pdfupd.exe”, and run. This malicious downloader/dropper currently evades most AV scanners. It drops a couple of drivers, and possibly may be a rustock bot variant, which we are looking further into:

ThreatFire users are protected from multiple layers of the attacks. In addition to patching your system, install a behavioral-based layer of protection on your system.

This entry was posted on Tuesday, July 28th, 2009 at 1:46 pm and is filed under Exploit, Undetected malware. You can follow any responses to this entry through the RSS 2.0 feed. You can skip to the end and leave a response. Pinging is currently not allowed.

Leave a Reply

Click here to cancel reply.

 
  • Blog Archive

    • November 2009
    • October 2009
    • September 2009
    • August 2009
    • July 2009
    • June 2009
    • May 2009
    • April 2009
    • March 2009
    • February 2009
    • January 2009
    • December 2008
    • November 2008
    • October 2008
    • September 2008
    • August 2008
    • July 2008
    • June 2008
    • May 2008
    • April 2008
    • March 2008
    • February 2008
    • January 2008
    • December 2007
    • November 2007
    • October 2007
    • September 2007
    • August 2007
  • Search This Blog

  • RSS Subscribe Now

    • Koobface on Yuotube
    • Spamvertizing Social Networks and Why Legitimate Money Will Help Clean Them Up
    • Zbot: Not Your Typical Malware
  • Categories

  • About ThreatFire

    ThreatFire™, features innovative real-time behavioral protection technology that provides powerful standalone protection or the perfect complement to traditional signature-based antivirus programs.

    ThreatFire's patent-pending ActiveDefense™ technology offers unsurpassed protection against both known and unknown zero-day viruses, worms, trojans, rootkits, buffer overflows, spyware, adware and other malware.

    Learn more...

  • Blogroll

    • AV-Comparatives weblog
    • Bill Mullins’ Weblog – Tech Thoughts
    • Security Response Blogs
    • Swatkat’s rants
    • ThreatExpert Blog
  • Links

    • AMTSO
    • AV-Test
    • Frank Boldewin’s Reconstructor
    • PC Tools
    • ThreatExpert
    • ThreatFire
    • Virus Bulletin
 
Subscribe to:
Posts (Atom)
Entries (RSS) and Comments (RSS).