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Rozzle : De- Cloaking Internet Malware

Rozzle : De- Cloaking Internet Malware. Clemens Kolbitsch , Christian Seifert , Benjamin Livshits and Benjamin Zorn Microsoft Research Technical Report Presentation by David Ferreras. The P roblem.

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Rozzle : De- Cloaking Internet Malware

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  1. Rozzle: De-Cloaking Internet Malware Clemens Kolbitsch,Christian Seifert, BenjaminLivshits and BenjaminZorn Microsoft ResearchTechnicalReport Presentationby David Ferreras

  2. TheProblem • The browser isexposedtomaliciouscontentthataffectmillions of URLsusing JavaScript • Web-based malware tendstotarget a particular browser, oftenattackingspecificversions of installedplugins. • Environmentmatching • Fingerprinting • Client-Sidecloaking

  3. TheProblem

  4. TheProblem

  5. TheSolutionProposed • Rozzle: Multi-execution JavaScript implementation • executebothpossibilitieswheneveritencounters control flowbranchingthatisdependentontheenvironment

  6. TheSolutionProposed

  7. TheSolutionProposed (Details) • SymbolicValues: Allenvironment-specificvaluesstartout as symbolic in Rozzle • Branchingonsymbolicvalues • Looping onsymbolicvalues • Creates a heap of values

  8. Results

  9. Limitations • Server-sidecloaking • Breakingexistingcode • IdentifyingthatRozzleisenabledcould be usedconstructdenial-of serviceattackonRozzle-enabled browsers.

  10. Anyquestions?

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