I. INTRODUCTION
II. IoT MALWARE BACKGROUND
A. ELF FILE FORMAT
B. IoT CPU ARCHITECTURES
C. IoT OS PLATFORMS
D. FEATURE EXTRACTION TOOLS FOR ELF STATIC ANALYSIS
E. MALWARE THREAT HUNTING APPROACHES
III. TAXONOMY
A. METRIC BASED
B. GRAPH/TREE-BASED FEATURES
C. SEQUENCE-BASED FEATURES
D. INTERDEPENDENCE
E. DYNAMIC ANALYSIS
IV. DISCUSSION ON SURVEYED PAPERS
V. CHALLENGES AND RESEARCH OPPORTUNITIES
A. CHALLENGES
B. GAPS AND RESEARCH OPPORTUNITIES
C. FORECASTS
VI. RELATED WORKS
A. SURVEYS ON IoT MALWARE THREAT HUNTING
VII. CONCLUSION