Authors: Taha Gharaibeh, Ibrahim Baggili, Anas Mahmoud
DFRWS USA 2024
Abstract
Memory Forensics (MF) is an essential aspect of digital investigations, but practitioners often face time-consuming challenges when using popular tools like the Volatility Framework (VF). VF, a widely-adopted Python-based memory forensics tool, presents difficulties for practitioners due to its slow performance. Thus, in this study, we evaluated methods to accelerate VF without modifying its code by testing four alternative Python Just In Time (JIT) interpreters – CPython, Pyston, PyPy, and Pyjion – using CPython as our baseline. Tests were conducted on 14 memory samples, totaling 173 GB, using a search-intensive VF plugin for Windows hosts. Employing our custom Framework for Advanced Monitoring and Execution (FAME), we deployed interpreters in Docker containers and monitored their real-time performance. A statistically significant difference was observed between the Python JIT interpreters and the standard interpreter. With PyPy emerging as the best interpreter, yielding a 15–20 % performance increase compared to the standard interpreter. Implementing PyPy has the potential to save significant time (many hours) when processing substantial memory samples. FAME enhances the efficiency of deploying and monitoring robust forensic tool testing, fostering reproducible research and yielding reliable results in both MF and the broader field of digital forensics.