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Memory Forensics

Written by DFMag


Memory Forensics

Haider M. al-Khateeb recovers user credentials from Windows memory dumps.

Mandatory key disclosure laws are used to force a suspect to surrender passwords and cryptographic keys to unlock accounts or scrambled data to authorities. In the UK, this is maintained through the Regulation of Investigatory Powers Act 2000 (RIPA) but a technical investigation to bypass the authentication challenge is needed when an individual refuses to cooperate. Further, user credentials can objectively establish links to end-users of the system. This article continues the work published in Issue 19 of the Digital Forensics Magazine but this time we focus more on analysis methods. Memory dump files contain a real representation of the machine-state at the time of the memory dump; they can be used to recover user-related data such as usernames, passwords and encryption key-files relying on virtual addresses and/or content analysis. We examine and demonstrate the methods available to extract such data from a variety of end-user services running on Windows or accessible online via web browsers. Our analysis will be scoped further to target more applications, especially cryptographic keys and disk encryption software such as TrueCrypt and BitLocker in our consequent article.




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Scott C. Zimmerman is a CISSP qualified Information Security consultant and presenter

 

Coming up in the Next issue of Digital Forensics Magazine

Coming up in Issue 38 on sale from February 2019:


Crowd Sourcing Digital Evidence The Risk v The Reward

All digital devices used today can be considered as a potential source for digital evidence. Andrew Ryan investigates the current state in the art of crowd sourced digital evidence. Read More »

Recovery of Forensic Artifacts from Deleted Jump-List in Windows 10

Jump-Lists are widely discussed in forensics community since the release of Windows 7 and are having more capabilities to reveal forensics artifacts in Windows 10. Read More »

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Operacion Bitcoin

The article is an actual case study of an Interpol investigation carried out in association with CertUY that has been ongoing for some months. It is written by the first hacker sent to prison in Uruguay who is currently out on bail pending sentencing. Read More »

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