EDR/XDR Bypass and Detection Evasion Techniques: An Investigation of Advanced Evasion Strategies from a Red Team Perspective

Article Summary: This document provides an in-depth analysis of EDR/XDR evasion techniques from a red team perspective, covering core strategies such as API unhooking, BOF-based in-memory execution, indirect system calls, and bypassing ETW and kernel callbacks. It elaborates on the underlying mechanisms, practical case studies, and the respective advantages and limitations of each technique. The article also highlights the constraints of traditional attack methods within modern, closed-loop defense systems. Furthermore, it emphasizes that all technical research must strictly adhere to legal authorization and compliance frameworks, with the objective of validating defensive effectiveness through adversarial exercises and promoting iterative improvements in security products. 1. Introduction: Red Team Challenges in EDR/XDR Environments With the iterative advancement of cybersecurity defense architectures, Endpoint Detection and Response (EDR) and Extended Detection and Response (XDR) tec