Utilizing Debugging Information of Applications in Memory Forensics

Abstract

The rapid development in the digital world has contributed to the dramatic increase in the number of cybercrimes. An application's volatile data that is kept in memory (RAM) could give clues on how a criminal has been using the application up to acquisition time. Unfortunately, application-level memory forensics has been conducted in an ad hoc manner because a forensic investigator has to come up with a new technique for a new application. This process has become problematic and exhausting. This paper proposes a general solution to investigate any application in memory. We heavily utilize applications' debugging information generated by compilers in our solution. Furthermore, we extend Volatility [Walters, 2007], an open-source memory forensic framework, by developing and integrating a plugin to investigate applications in memory. We design several experiments to evaluate the effectiveness of our plugin. Interestingly, our plugin can parse debugging information and extract variables' names and data types regardless of their scope and complexity. In addition, we experimented with a real world application and succeeded in collecting vital information out of it. By accurately computing the Virtual Addresses (VA) of variables along with their allocated memory sizes based on their types, we are able to extract their values out of memory. In addition, we trace call stacks as per threads to extract local variables' values. Finally, direct and indirect pointers are successfully dereferenced.

Keywords

• debugging information
• memory forensics
• applicati