MITRE ATT&CK Defense: System Binary Proxy Execution via Rundll32

Adversaries frequently bypass traditional application control policies by leveraging trusted Windows system binaries to execute malicious code. Understanding these "Living off the Land" techniques is essential for modern security analysts and threat hunters. This text-only course guides you through the mechanics of System Binary Proxy Execution, focusing on the widely abused Rundll32 utility. You will learn to analyze how attackers execute arbitrary code through trusted processes, identify suspicious command-line arguments, and configure robust detection mechanisms. What you'll learn: Understand the fundamentals of System Binary Proxy Execution within the MITRE ATT&CK framework; Analyze how Rundll32 functions and why adversaries use it to bypass security controls; Identify common malicious command-line patterns and execution behaviors; Configure detection rules using Windows Event Logs and Sysmon to spot proxy execution; Apply threat hunting strategies to search for anomalous Rundll32 activity in enterprise environments; Design basic mitigation and attack surface reduction strategies to limit binary abuse. The course begins with foundational concepts of trusted binary abuse and the MITRE ATT&CK framework. You will then progress through written walkthroughs of Rundll32 execution methods, analysis of real-world patterns, and step-by-step guidance on constructing detection rules. This course is designed for aspiring security analysts, threat hunters, and IT administrators looking to understand defense evasion. No prior security engineering experience is required, though a basic familiarity with Windows operating system concepts is helpful. Start reading today to master the detection of advanced defense evasion techniques.