Below is our Linux command line forensics and intrusion detection cheat sheet along with a presentation given at Purplecon 2018. These resources can help you investigate a Linux host for compromise without loading any special …
A nightmare for security personnel on Linux is to find a backdoor operating. This means an attacker is interacting with the host in real-time to further their intrusion. Of various backdoors that can be used, …
A big myth around investigating Linux malware is that the first tool you need is a debugger and deep knowledge of assembly to understand what it does. It’s easy for admins and security personnel responding …
Let’s talk about Linux file descriptors and how to investigate a malicious process using them. What Is a File Descriptor? Since the inception of Unix (on which Linux is based), everything is a file. We …
We have released a new tool called sandfly-processdecloak designed to decloak hidden processes from two common and easily deployed Linux Loadable Kernel Module (LKM) stealth rootkits: Diamorphine and Reptile. You can download the tool from …
A developing threat to Linux over the last several years has been the idea of fileless malware. Fileless malware is designed to inject itself into a running Linux system and leave no traces on the …
We are pleased to announce the release of the Sandfly Splunk app. This new app is available on Splunkbase. Sandfly users can now combine the powerful search and analysis features of Splunk, with Sandfly’s leading …
Linux kernel process masquerading is sometimes used by malware to hide when it is running. Let’s go over how you can unmask a piece of Linux malware using this tactic. What is Linux Kernel Process …
Increasingly on Linux we are seeing malware deploying anti-detection and evasion tactics. In this post we’re going to go over a recent piece of malware that used a commonly available tool for hiding itself. We’ll …