CHFI Storage Forensics and File System Analysis Practice Question
A forensic analyst needs to acquire RAM from a live Linux system for memory analysis. Which tool is specifically designed for this purpose and can capture memory without rebooting?
⚠ Common exam trap
EC-Council often tests the distinction between acquisition tools (like LiME) and analysis tools (like Volatility), trapping candidates who confuse the role of Volatility as a memory capture tool rather than a post-acquisition analysis framework.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
LiME
LiME (Linux Memory Extractor) is specifically designed to capture volatile memory from live Linux systems without requiring a reboot. It loads a kernel module that safely dumps RAM contents to a file, preserving the memory image for forensic analysis. Unlike dd, LiME handles memory-mapped I/O and avoids corrupting the system state during acquisition.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
FTK Imager
Why it's wrong here
FTK Imager is a GUI-based forensic tool designed primarily for acquiring disk images (E01, AFF, raw) and creating forensic images of storage media. It has a memory capture feature, but that feature is implemented specifically for Windows systems via Windows APIs and kernel drivers, and it cannot acquire RAM from a live Linux host. Even when running under Wine or a VM, it does not have the ability to access Linux kernel memory structures in a forensically sound way, so it is not a viable tool for this task.
- ✗
Volatility
Why it's wrong here
Volatility is a powerful memory analysis framework that parses artifacts from an existing memory dump, such as processes, loaded kernel modules, and open network sockets. It is strictly a post-acquisition tool: it requires an already captured RAM image as input and has no functionality to capture physical memory from a live Linux system. While it supports Linux memory dumps through its linux profile, its role in an incident response workflow begins only after LiME or another acquisition tool has produced the image file.
- ✓
LiME
Why this is correct
LiME (Linux Memory Extractor) is a loadable kernel module (LKM) purpose-built for capturing volatile memory from live Linux systems. It uses kernel APIs to traverse physical memory ranges, handles memory holes properly, and can write to a raw or LiME-format image file on local storage or stream it over TCP to a forensic server. Because it runs in kernel mode, it provides a forensically sound and consistent snapshot, making it the de facto standard for Linux RAM acquisition.
- ✗
dd
Why it's wrong here
dd is a generic bit-stream copying utility that, in theory, could read /dev/mem or /dev/kmem to copy physical memory. However, modern Linux kernels enable CONFIG_STRICT_DEVMEM, which restricts access to only certain ranges, and reading device memory without proper handling can return inconsistent data or crash the system. Additionally, dd lacks native support for metadata, hashing, or handling of memory holes, making it unsuitable for forensically sound evidence collection; LiME is specifically engineered to overcome these limitations.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This CHFI practice question is part of Courseiva's free EC-Council certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the CHFI exam.