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Linux Malware Cryptominer Detection and Forensics
This year we have seen a huge uptick in cryptomining malware against Linux servers. The usual attack vector is the following: A brute force attack against SSH accounts. Automated install of a pre…
The Pyramid of Pain and Sandfly
There is a great post called The Pyramid of Pain by David Blanco that details the six ways to cause adversaries the most trouble when attacking your network. The Pyramid of Pain is below: We’ve been…
Detecting Linux Binary File Poisoning
Let’s talk about Linux binary poisoning. Binary poisoning is tampering with a system command and replacing it with a malicious version. This can be a wholesale replacement with a new file designed to…
Christchurch Hacker Con 2017 Linux Forensics Slides
The slides for Craig’s talk on command line Linux Forensics from the 2017 Christchurch Hacker Con can be found here: Christchurch Hacker Con 2017 Linux Digital Forensics Presentation The slides cover…
Linux Malware Persistence with Cron
If malware is anything at all, it’s persistent. On Linux, just like Windows, malware once loaded wants to stay loaded. On Windows systems this is usually done with a variety of registry mechanisms.…
Detect Linux Loadable Kernel Module Stealth Rootkits Agentlessly with Sandfly
Watch Sandfly’s agentless intrusion detection and threat hunting technology detect a Linux stealth rootkit. Sandfly automates the investigation and alerting of Linux rootkit compromises so you can…