Android Malware Family Classification: What Works - API Calls, Permissions or API Packages?
2021 14th International Conference on Security of Information and Networks (SIN)(2021)
Abstract
With the increased popularity and wide adoption of Android as a mobile OS platform, it has been a major target for malware authors. Due to unprecedented rapid growth in the number, variants, and diversity of malware, detecting malware on the Android platform has become challenging. Beyond the detection of a malware, classifying the family the malware belongs to, helps security analysts to reuse malware removal techniques that is known to work for that family of malware. It takes manual analysis if a malware belongs to an unknown family. Therefore, classifying malware into exact family is important. This paper presents a technique and tool named MAPFam that applies machine learning on static features from the Manifest file and API packages to classify an Android malware into its family. This work is premised on a starting hypothesis that features extracted from API packages rather than on API calls lead to more precise classification. Our experiments indeed shows that API package based models provides similar to 1.63X more accurate classification compared to an API call based method. Our machine learning based malware family classification system uses API packages, requested permissions, and other features from the Manifest files. The proposed family classification system achieves accuracy and average precision above 97% for the top 60 malware families by using only 81 features with 97.55% of model reliability rate (Kappa score). The experimental results also shows that MAPFam can perfectly identity 36 malware families.
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Key words
Android,static analysis,malware family,security,machine learning
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