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Hands on USN Journal Analysis

  • Tuesday, December 16th, 2014 at 1:00 PM EST (18:00:00 UTC)
  • David Cowen
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Overview

Journaled file systems have been a part of modern file systems for years but the science of computer forensics has only been approaching them mainly as a method of recovering deleted files. In this talk we will outline the three major file systems in use today that utilize journaling (NTFS, EXT3/4, HFS+) and explain what is stored and its impact on your investigations. We will demonstrate tools for NTFS and EXT3/4 that allow us to:

  • Recover data hidden or destroyed by anti forensics
  • Recover previously unrecoverable artifacts
  • Trace all file system movements and actions of malware
  • The possibility of entirely new analysis techniques
  • The ability to detect and identify specific anti-forensic tools automatically

Ending with a review of HFS+ and the future of file system forensics in relations to journals and new file systems such as ReFS

Speaker Bio

David Cowen

David Cowen is a Certified SANS Instructor and a Partner at G-C Partners, LLC, where his team of expert digital forensics investigators pushes the boundaries of what is possible on a daily basis. He has been working in digital forensics and incident response since 1999 and has performed investigations covering thousands of systems in the public and private sector. Those investigations have involved everything from revealing insider threats to serving as an expert witness in civil litigation and providing the evidence to put cyber criminals behind bars.

David has authored three series of books on digital forensics; Hacking Exposed Computer Forensics (1st-3rd editions), Infosec Pro Guide to Computer Forensics, and the Anti Hacker Toolkit (Third Edition). His research into file system journaling forensics has created a new area of analysis that is changing the industry. Combined with Triforce products, David's research enables examiners to go back in time to find previously unknown artifacts and system interactions.

 

David is a Certified Information Systems Security Professional (CISSP) and a GIAC Certified Forensic Examiner. He is the winner of the first SANS DFIR NetWars and a SANS Lethal Forensicator whose passion for digital forensics can be seen in everything he does. He started in 1996 as a penetration tester and has kept up his information security knowledge by acting as the Red Team captain for the National Collegiate Cyber Defense Competition for the last nine years.

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