Physical memory forensics system and method

摘要

The method of the present inventive concept is configured to utilize Operating System data structures related to memory-mapped binaries to reconstruct processes. These structures provide a system configured to facilitate the acquisition of data that traditional memory analysis tools fail to identify, including by providing a system configured to traverse a virtual address descriptor, determine a pointer to a control area, traverse a PPTE array, copy binary data identified in the PPTE array, generate markers to determine whether the binary data is compromised, and utilize the binary data to reconstruct a process.

主权项

1. A method to determine whether a computer system has been compromised, the method comprising the steps of:
traversing a virtual address descriptor to acquire process data; reconstructing mapped data based on the acquired process data; storing the mapped data via a memory of a system, and traversing a virtual address control block to recover a file from a memory cache if (i) a page table entry is invalid, and (ii) a valid data length related to the file is not determined to be greater than a size of the file, wherein,
the mapped data is obtained when a virtual address causes a page fault, andthe page fault triggers the system to execute a process to automatically acquire the mapped data.