Abstract:With the increase of the number and type of malicious code, it is necessary to detect malicious code quickly and effectively. One of the key point is the feature extraction of malicious code. Aiming at the insufficiency of the feature extraction speed of malicious code bytecode sequences in the existing methods, a method of GPU acceleration to extract the features of malicious code bytecode sequences is proposed. Computeintensive tasks such as the feature extraction of bytecode and the calculation of TFIDF features in traditional methods are transferred to the GPU for parallel computing by using the more mature CUDA architecture. The experimental results show that the method has a speed increase of 2 to 4 times for data sets with different sample file sizes,which greatly improves the speed of feature extraction of malicious code bytecode sequences.