Mobility

pBMDS: A Behavior-Based Malware Detection System for Cellphone Devices

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Executive Summary

Computing environments on cellphones, especially smartphones, are becoming more open and general-purpose, thus they also become attractive targets of malware. Cellphone malware not only causes privacy leakage, extra charges, and depletion of battery power, but also generates malicious traffic and drains down mobile network and service capacity. In this work one devises a novel behavior-based malware detection system named pBMDS, which adopts a probabilistic approach through correlating user inputs with system calls to detect anomalous activities in cellphones. pBMDS observes unique behaviors of the mobile phone applications and the operating users on input and output constrained devices, and leverages a Hidden Markov Model (HMM) to learn application and user behaviors from two major aspects: process state transitions and user operational patterns.

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