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Basic Linux Malware Process Forensics for Incident Responders
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…
Using Linux utmpdump for Forensics and Detecting Log File Tampering
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…
Getting an Attacker IP Address from a Malicious Linux At Job
Attackers on Linux often try to establish persistence so they can maintain access to a host. The most common way to do this is with a cron job that is scheduled to run and re-install malware if it…
Detecting and De-Cloaking HiddenWasp Linux Stealth Malware
A new Linux stealth malware was discovered by researchers last week . The malware, named HiddenWasp, is a remote access tool that has two modes of infection depending on whether it has root level or…
How To Recover A Deleted Binary From Active Linux Malware
Often, Linux malware will delete itself after it starts so that file scanners and integrity checks won’t see the binary present. It also can make forensic analysis harder if you can’t get to the…
Using Linux Process Environment Variables for Live Forensics
In this post and video we’re going to explore the Linux /proc directory further by digging into a live process and the environment variables it presents. The basic format for the command we’ll use is…