Forensic analysis of memory on Linux
Tracing Clues
In computer forensics, memory analysis is becoming increasingly important as a means for investigating security incidents. In this article, we provide an overview of the various memory dumping options on Linux and introduce the support in Linux for the Volatility Analysis Framework.
Experts agree that one of the first steps for diagnosing a potential intrusion incident is backing up a RAM image. Traditional investigations of persistent memory are no longer sufficient because, as the capacity of hard drives increases, you need to investigate a huge amount of data to detect an attack. Analysis of volatile memory can support and accelerate these investigations because forensic investigators only need to search through a comparatively small amount of data for clues relating to a successful attack. Additionally, RAM often contains important traces, such as information on running processes or active network connections.
Tapping into RAM is especially important for countering anti-forensics techniques. In some cases, it is possible to extract the passphrase for an encrypted drive from volatile memory. You can also detect non-persistent malware using RAM analysis. In targeted attacks, hackers often use malicious code that is only active in memory, and it leaves no data behind on the disk. This type of malware is virtually undetectable without analyzing volatile memory.
Buy this article as PDF
(incl. VAT)
Buy Linux Magazine
US / Canada
UK / Australia
Subscribe to our Linux Newsletters
Find Linux and Open Source Jobs
Subscribe to our ADMIN Newsletters
Support Our Work
Linux Magazine content is made possible with support from readers like you. Please consider contributing when you’ve found an article to be beneficial.
News
-
Juno Tab 3 Launches with Ubuntu 24.04
Anyone looking for a full-blown Linux tablet need look no further. Juno has released the Tab 3.
-
New KDE Slimbook Plasma Available for Preorder
Powered by an AMD Ryzen CPU, the latest KDE Slimbook laptop is powerful enough for local AI tasks.
-
Rhino Linux Announces Latest "Quick Update"
If you prefer your Linux distribution to be of the rolling type, Rhino Linux delivers a beautiful and reliable experience.
-
Plasma Desktop Will Soon Ask for Donations
The next iteration of Plasma has reached the soft feature freeze for the 6.2 version and includes a feature that could be divisive.
-
Linux Market Share Hits New High
For the first time, the Linux market share has reached a new high for desktops, and the trend looks like it will continue.
-
LibreOffice 24.8 Delivers New Features
LibreOffice is often considered the de facto standard office suite for the Linux operating system.
-
Deepin 23 Offers Wayland Support and New AI Tool
Deepin has been considered one of the most beautiful desktop operating systems for a long time and the arrival of version 23 has bolstered that reputation.
-
CachyOS Adds Support for System76's COSMIC Desktop
The August 2024 release of CachyOS includes support for the COSMIC desktop as well as some important bits for video.
-
Linux Foundation Adopts OMI to Foster Ethical LLMs
The Open Model Initiative hopes to create community LLMs that rival proprietary models but avoid restrictive licensing that limits usage.
-
Ubuntu 24.10 to Include the Latest Linux Kernel
Ubuntu users have grown accustomed to their favorite distribution shipping with a kernel that's not quite as up-to-date as other distros but that changes with 24.10.