Abstract
The widespread use of smartphones in recent years has led to a significant rise in the sophistication and number of Android malicious applications (apps) targeting smartphone users. Android-based smartphones attract attackers more than other smartphones due to the popularity and open source features of the Android environment. Malware apps pose a potential threat to the security of Android-based smartphones because of the storage of confidential and private information. To improve the classification efficiency of Android malicious apps, this paper proposes a hybrid approach for the classification of Android malware by integrating the fuzzy C-means clustering (FCM) algorithm with the light gradient boosting machine (LightGBM). First, the fuzzy clustering method is utilized for generating highly significant clusters of the Android apps' permissions that reflect the certain characteristics of the Android apps. The primary goal of using fuzzy clustering is to produce new features by gathering Android app permissions with related patterns together in clusters. Second, the LightGBM is employed to take the app's permissions and their clusters resulting from FCM as inputs and outputs the classification result as a malware or goodware app after the training. The advantages of using LightGBM are its high learning efficiency and precise classification. The significance of the proposed approach is illustrated by conducting several experiments using a well-known dataset containing benign and malware Android apps. The results of the experiments show that the suggested approach outperforms the other approaches and attains the highest accuracy (94.63%), area under the curve (AUC) (98.74%) and precision (97.70%).