  Malware detection models based on deep learning have been widely used, but
recent research shows that deep learning models are vulnerable to adversarial
attacks. Adversarial attacks are to deceive the deep learning model by
generating adversarial samples. When adversarial attacks are performed on the
malware detection model, the attacker will generate adversarial malware with
the same malicious functions as the malware, and make the detection model
classify it as benign software. Studying adversarial malware generation can
help model designers improve the robustness of malware detection models. At
present, in the work on adversarial malware generation for byte-to-image
malware detection models, there are mainly problems such as large amount of
injection perturbation and low generation efficiency. Therefore, this paper
proposes FGAM (Fast Generate Adversarial Malware), a method for fast generating
adversarial malware, which iterates perturbed bytes according to the gradient
sign to enhance adversarial capability of the perturbed bytes until the
adversarial malware is successfully generated. It is experimentally verified
that the success rate of the adversarial malware deception model generated by
FGAM is increased by about 84\% compared with existing methods.
