Regin: Static Analysis of Its Lightweight VFS Abstraction Layer
Regin: Static Analysis of Its Lightweight VFS Abstraction Layer Polymorphic Kernel Interfaces and I/O Abstraction Layer “To understand the immeasurable, the mind must be extraordinarily quiet, still.” — Jiddu Krishnamurti Seeker( 李标明 ) · @clibm079 China · Independent Malware Analyst & Researcher From 2025.9.24 to 2025.10.14 Prologue: The Temple and the Kernel Recently, I still climbed a mountain and visited the temple again, but only a few times; sometimes, I go hiking in the forests. Here, I keep moving on malware research. I notice that quite sophisticated malware Regin, between 2014 and 2015, Symantec and Kaspersky published their report of analysis. According to a Symantec report, “Regin is a multi-staged, modular threat, meaning that it has a number of components, each depending on others, to perform attack operations.” In this report, I would like to do and share li...