Imbalanced malware classification: an approach based on dynamic classifier selection

• URL: http://arxiv.org/abs/2504.00041v2
• Date: Sat, 05 Apr 2025 19:40:14 GMT
• Title: Imbalanced malware classification: an approach based on dynamic classifier selection
• Authors: J. V. S. Souza, C. B. Vieira, G. D. C. Cavalcanti, R. M. O. Cruz,
• Abstract summary: A significant challenge in malware detection is the imbalance in datasets, where most applications are benign, with only a small fraction posing a threat.<n>This study addresses the often-overlooked issue of class imbalance in malware detection by evaluating various machine learning strategies for detecting malware in Android applications.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: In recent years, the rise of cyber threats has emphasized the need for robust malware detection systems, especially on mobile devices. Malware, which targets vulnerabilities in devices and user data, represents a substantial security risk. A significant challenge in malware detection is the imbalance in datasets, where most applications are benign, with only a small fraction posing a threat. This study addresses the often-overlooked issue of class imbalance in malware detection by evaluating various machine learning strategies for detecting malware in Android applications. We assess monolithic classifiers and ensemble methods, focusing on dynamic selection algorithms, which have shown superior performance compared to traditional approaches. In contrast to balancing strategies performed on the whole dataset, we propose a balancing procedure that works individually for each classifier in the pool. Our empirical analysis demonstrates that the KNOP algorithm obtained the best results using a pool of Random Forest. Additionally, an instance hardness assessment revealed that balancing reduces the difficulty of the minority class and enhances the detection of the minority class (malware). The code used for the experiments is available at https://github.com/jvss2/Machine-Learning-Empirical-Evaluation.

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