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 …
READ MOREHow To Decloak Stealth Linux Cryptocurrency Mining Malware
We’re releasing an open source tool today called sandfly-filescan. Sandfly-filescan allows Linux admins and incident responders to quickly scan for compressed or encrypted executable files often linked to malware. sandfly-filescan is a utility to quickly …
READ MORESandfly Filescan Open Source File Entropy Scanner for Linux
Sandfly 2.3.3 has been released. We’ve put in more methods to help spot packet sniffers and suspicious immutable files common with malware. Plus, this version has a bug fix for a problem where hosts were …
READ MORESandfly 2.3.3 – More Linux Sniffer and Immutable File Detection
Sandfly 2.3.2 has been released. It includes new capabilities to detect a variety of Linux network packet sniffers, plus has internal optimizations that have improved process forensic performance up to 600%. Linux Network Packet Sniffer …
READ MORESandfly 2.3.2 – Linux Packet Sniffer Detection and Faster Process Forensics
Sandfly 2.3 is now released. This version features many changes to improve performance, updates the custom Sandfly syntax, eliminates false alarms and migrates to Elasticsearch 7. Performance Enhancements The backend has been made significantly faster …
READ MORESandfly 2.3 – Performance Updates, Elasticsearch 7 Support and More
Let’s go step-by-step and do some basic live process forensics for Linux. Today’s attack is a bind shell backdoor waiting for a connection on Ubuntu. Simulated Bind Shell Attack If you want to simulate the …
READ MOREBasic Linux Malware Process Forensics for Incident Responders
Sandfly 2.2 has now been released. This update adds new capabilities around web shell detection, anti-forensics detection, plus much more. A small sample of some of the new Linux threats we detect with our agentless …
READ MORESandfly 2.2 – Enhanced Web Shell Detection, Anti-Forensics and More
Sandfly 2.1 has been released. We have expanded MIPS and ARM CPU coverage for embedded Linux devices, boosted our bindshell backdoor coverage and added in new sniffer and rogue sudo user detection as well as …
In this post we’re going to show you how to use utmpdump for investigating Linux audit logs for signs of compromise. Seemingly unknown by many, the utmpdump command is a great tool for Linux forensics …
READ MOREUsing Linux utmpdump for Forensics and Detecting Log File Tampering