This week, we're covering zero-day vulnerability response from a Digital Forensics and Incident Response professional's perspective. In our roles, we often get involved in various tasks that require a security mindset, and one critical task is responding to zero-day vulnerabilities. To provide a real-world context, we'll integrate the recently disclosed zero-day exploit "Copy2Pwn" (CVE-2024-38213) and discuss the specific forensic artifacts and methods used to achieve the objectives of a DFIR response.

Welcome to this week’s session, where we’ll delve into web shell forensics—an ever-critical topic in incident response investigations and threat-hunting strategies. Today, I’ll provide a breakdown that includes the latest developments, detailed triage techniques, and practical examples of what to look for during your investigations:

Rootkits are hard to detect because they employ advanced stealth techniques to hide their presence. They can conceal processes, files, and network activities by altering system calls and kernel data structures. The deep system knowledge and specialized tools required for low-level analysis make rootkit detection complex and resource-intensive. Limited visibility of standard security tools further complicates the identification of rootkits. However, This week I'm going to talk about how to identify root kits on a Linux systems using only the command line.

In previous episodes, we covered techniques for examining the Windows Registry, a critical component in identifying persistence mechanisms. We'll explore the registry but shift our focus to registry modification events as reported by Windows event logs