Anatomy of File Analysis and Decomposition Engine
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General short overview of how do file analysis and decomposition engines work and what components do they consist of, problems associated with the domain, etc. Slides are from FSec 2012 conference.
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5th Power Grid Model Meet-up
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Anatomy of File Analysis and Decomposition Engine
- 4. • Collect as much information as possible from files/binary objects – Other contained files/objects – Metadata, e.g. mobile app permissions, geolocation, IP addresses, domains, etc. • Strip protection layers for additional analysis • Do it really, really fast • Do it at scale
- 5. • Forensics • Anti-Virus • Threat Intelligence • ...
- 7. • Files can be – Packed – Obfuscated – Encrypted – Broken • Large amounts of data to process • Speed
- 9. • Consolidating metadata and files/objects • Scheduling • Reporting • Communication
- 10. METADATA FILES ENGINE FILES
- 11. • Preprocessing – Identification – Initial analysis • Analysis – Unpacking – Validation • Post processing – Consolidating metadata
- 12. MODULES SCHEDULER VALIDATION IDENTIFICATION ANALYSIS UNPACKING ... REPORT, METADATA, FILES
- 13. • Speed • Security • We can emulate
- 15. • Various identification engines – Signature based – Heuristics – ... • Problems
- 16. • Signatures • Various complexity – Simple (e.g. PEiD) • Simple byte and wildcard matching, hash matching • 12 ?? 56 ?8 9? – Medium (e.g. TitanMist) • Small Regex like subset – High (e.g. TLang) • Almost full fledged programming language • Other
- 18. • Some parts depend on identification • Dedicated analysis modules • Internal/external modules
- 19. • Unpacking • Validation • Collecting metadata • Repairing broken files