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Mathematical Problems in Engineering
Volume 2013 (2013), Article ID 402438, 11 pages
Research Article

Osiris: A Malware Behavior Capturing System Implemented at Virtual Machine Monitor Layer

1School of Computer Science and Technology, Xidian University, P.O. Box 167, Xi’an, Shaanxi 710071, China
2College of Computer Science and Technology, Chongqing University of Posts and Telecommunications, Chongqing, China

Received 17 January 2013; Accepted 19 March 2013

Academic Editor: Yuping Wang

Copyright © 2013 Ying Cao et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


To perform behavior based malware analysis, behavior capturing is an important prerequisite. In this paper, we present Osiris system which is a tool to capture behaviors of executable files in Windows system. It collects API calls invoked not only by main process of the analysis file, but also API calls invoked by child processes which are created by main process, injected processes if process injection happens, and service processes if the main process creates services. By modifying the source code of Qemu, Osiris is implemented at the virtual machine monitor layer and has the following advantages. First, it does not rewrite the binary code of analysis file or interfere with its normal execution, so that behavior data are obtained more stealthily and transparently. Second, it employs a multi-virtual machine framework to simulate the network environment for malware analysis, so that network behaviors of a malware are stimulated to a large extend. Third, besides network environment, it also simulates most common host events to stimulate potential malicious behaviors of a malware. The experimental results show that Osiris automates the malware analysis process and provides good behavior data for the following detection algorithm.