The Art of Self-Mutating Malware

Article Summary : This article systematically elaborates on the technical evolution and implementation principles of self-mutating malware, covering the core mechanisms of polymorphic and metamorphic engines. Through two concrete examples — Veil64 and Morpheus — the author "f00crew" from Hong Kong China, analyzes key techniques such as register randomization, algorithmic variants, and intelligent junk code injection. It emphasizes how mutation at the syntactic, structural, and semantic layers can evade signature-based detection while strictly adhering to the principle of behavioral conservation. The author points out that the essence of mutation technology is to keep functionality unchanged while infinitely varying the implementation method, and warns of risks such as code size inflation and stability issues. Categories : Malware, Binary Security, Vulnerability Analysis, Red Teaming, Penetration Testing The Art of Self-Mutating Malware In the beginning, detection relied on signatures —