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Trojans

Trojans. Daniel Bartsch CPSC 420 April 19,2007. What is a Trojan?. Trojans are malware Named after Odysseus’s mythical trick Embedded in a program Cause a variety of undesired effects Not simple to define!. ©2007 Steve Smith and World of Stock

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Trojans

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  1. Trojans Daniel Bartsch CPSC 420 April 19,2007

  2. What is a Trojan? • Trojans are malware • Named after Odysseus’s mythical trick • Embedded in a program • Cause a variety of undesired effects • Not simple to define! ©2007 Steve Smith and World of Stock http://images.worldofstock.com/slides/BTE1174.jpg

  3. Why are Trojans Hard to Define? • Definition creep! • Should only refer only to infected file • Term expanded to refer to effects file has as well • Trickery used to prevent program removal commonly classified as trojan

  4. A Trojan is Not A Virus • Confusion caused by virus scanners • Viruses infect other files • The goals are different • Viruses do not rely on tricking the user • Viruses do require action from the user

  5. A Trojan is Not a Worm • Worms do not require action from the user • Worms exploit security flaws • Worms spread themselves • Worms typically make multiple copies of themselves

  6. What are Some Properties of Trojans? • Use trickery in some form • Do not typically spread themselves • File they are attached to has to be put into use at least once • Have means to continue running • Can be added to virtually anything

  7. What Kinds of Trickery do Trojans Use? • Highly desirable files • Exclusive • Rare • Free • Codec Packs • Bootlegs • New files • No CD cracks • Key Generators

  8. What Kinds of Trickery do Trojans Use? • Disguises • Fake error messages • Lies from the sender • Rootkits • Encryption • Vague process names

  9. What Kinds of Things are Trojans Used for? • Pranks • Make some zombies • Denial of service attacks • Proxies • Servers • Spam • Mess with data

  10. What Kinds of Things are Trojans Used for? • Disabling security software - the blended threat • Spying • Key logging • Drive Access • Spyware and Adware • Backdoors

  11. What Kinds of Things are Trojans Used for? • Remote Administration

  12. What are Some Common Trojans? • BO2K • NetBus • SubSeven • SpySheriff

  13. BO2K • Free program marketed as a RAT • Reputation caused classification • Windows 2000, NT, XP • Actively Developed • Continuation of Back Orifice

  14. Some Features of BO2K • Key logging • Registry Editing • Remote upgrade and installation • Connection redirection • Audio and video capture • Remote Reboot

  15. BO2K in Action

  16. NetBus • Intended for pranks • Famously used to put child pornography on Magnus Ericson’s computer

  17. SubSeven • Allows attacker to lock out other attackers • Early versions included a master password

  18. Optix Pro • Fully customizable • Can disable security • No longer in development

  19. Optix Pro Configuration

  20. Optix Pro Configuration

  21. Optix Pro Configuration

  22. Optix Pro Configuration

  23. SpySheriff • Not a Remote Administration Trojan • Masquerades as a spyware scanner • Blocks connections, Disables internet connections, prevents system restores • Can reinstall itself and give itself administrative rights

  24. SpySheriff

  25. One Famous Use of a Trojan • US learned of a Soviet plot to steal turbine control software • Leaked software with a trojan • Software used in Trans-Siberian gas pipeline • Caused one of the largest non-nuclear explosions and fires ever

  26. Dealing with Trojans • Research required to remove any Trojan that a virus scanner can’t remove by itself • Preventative measures are best • Multiple firewalls • Disconnect computers from networks if use of a RAT is suspected

  27. Sources • http://www.webopedia.com/DidYouKnow/Internet/2004/virus.asp • http://www.webopedia.com/TERM/T/Trojan_horse.html • http://cpsc420.cs.clemson.edu/material/Malware/Trojan%20Horses.jnt – authentication required • http://computer.howstuffworks.com/virus.htm • http://pcworld.about.com/news/Jul122005id121793.htm • http://www.bleepingcomputer.com/forums/topic22402.html • http://hackpr.net/~sub7/faq.shtml#CA.1 • http://www.symantec.com/avcenter/warn/backorifice.html • http://bo2k.sourceforge.net/docs/bo2k_pressrelease.html • http://bo2k.sourceforge.net/featurelist.html • http://radsoft.net/resources/rants/20041128,00.shtml • http://www.windowsecurity.com/articles/Student-Teacher-Optix-Pro-Part2.html • http://www.taipeitimes.com/News/editorials/archives/2004/02/04/2003097438/print • http://en.wikipedia.org/wiki/Zombie_computer • http://en.wikipedia.org/wiki/Trojan_horse_%28computing%29 • http://en.wikipedia.org/wiki/Pest_Trap • http://en.wikipedia.org/wiki/SubSeven • http://en.wikipedia.org/wiki/Back_Orifice_2000 • http://en.wikipedia.org/wiki/NetBus • http://en.wikipedia.org/wiki/Optix_Pro • http://en.wikipedia.org/wiki/List_of_trojan_horses

  28. Any Questions? Trojan Rabbit from Monty Python and the Holy Grail

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