Mathieu Castets October 17th, 2012.  What is a rootkit?  History  Uses  Types  Detection  Removal  References 2/11.

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Presentation transcript:

Mathieu Castets October 17th, 2012

 What is a rootkit?  History  Uses  Types  Detection  Removal  References 2/11

 Hackers have to access to the root-level to install a rootkit  Software that hides itself and allow intruders to maintain privileged access  Remotely run command actions or extract information  « root » traditional name of the privileged account on UNIX  « kit » software components that implement the tool 3/11

 In 1986, the first virus called « Brain virus » was discovered and used cloaking techniques to hide itself  UNIX: In 1990, written by Lane Davis and Steven Dake  Windows NT: In 1999, NTRootkit  Mac OSX: In /11

 In 2005, Sony BMG published CDs with copy protection and DRM  The software silently installed a rootkit  To cloak itself, the rootkit hid from the user any file starting with $sys$  Software engineer Mark Russinovich discovered it on one of his computers  In 2006, Sony BMG released patches to uninstall the rootkit 5/11

 Provide an attacker with full access  Hide other malwares  Appropriate the compromised machine as a zombie computer  Enforcement of digital rights management (DRM) Hide cheating in online games Enhance emulation software and security software Bypassing Windows Product Activation 6/11

 Two groups:  Kernel mode/integration  Patch system  Detection can be complicated  Most dangerous  Application level  Replace original executable files  Modify the behavior of applications 7/11

 Alternative trusted medium: shut down computer and check its storage by booting the system with an alternative trusted media  Behavioral-based: analyzing system behavior like application calls and CPU utilisation  The other detection methods we can use are:  Signature-based  Difference-based  Integrity checking  Memory dumps 8/11

 Manual removal of a rootkit is often too difficult for a typical computer user  In 2005, Microsoft's monthly Malicious Software Removal Tool is able to detect and remove some classes of rootkits  However, the best way to remove all rootkits is to re-install the operating system 9/11

 About.com ons/f/faq_rootkit.htm  Rootkitonline.com  Informit.com 10/11

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