A Static Birthmark for MS Windows Applications Using Import Address Table

A software birthmark is unique and native characteristics of software, and thus can be used to detect the theft of software. We propose a new static software birthmark for programs on Microsoft Windows which have Portable Executable (PE) format. These programs use different Dynamic Link Libraries (DLLs) and Application Program Interfaces (APIs) while they are executing. The number and names of the used DLLs and APIs are unique to each program. The proposed birthmark is based on these numbers and names. This information can be obtained from the Import Address Table (IAT), which is part of the PE file. By inspecting the proposed birthmark, we can identify certain software and detect pirated software. To evaluate the effectiveness of the proposed birthmark, we inspect and compare several applications of different kinds. The experimental results show that the proposed birthmark can identify Windows applications, leading to the prevention of an illegal distribution of copyrighted software.