Statistical Study of Imported APIs by PE Type Malware

In this paper we introduce a statistical study which enable us to know which are Windows APIs that are most imported by malware codes. To do that, we have used a given number of infected Portable Executable (PE) files and another number of none infected ones. We used statistical Khi
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test to set if an API is likely used by malware or not. We guess that a given work is necessary and important for behavior-based malware detection, especially which use API importations to analyze PE codes. For experimentation purpose, we have used a large set of PE files extracted from known databases to perform our analysis and establish our conclusions.