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Malicious code multi-model intersection detection method based on statistical learning

A malicious code and statistical learning technology, applied in computing, computer security devices, instruments, etc., can solve the problems of malicious code variation, machine learning model prediction results that cannot be compared with each other and common defense, etc. Effect

Active Publication Date: 2021-07-20
NANKAI UNIV
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  • Claims
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AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the existing problem of variation of malicious codes, and the problem that the prediction results of various machine learning models cannot be compared with each other and jointly defended, and provides a multi-model cross-detection method for malicious codes based on statistical learning

Method used

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  • Malicious code multi-model intersection detection method based on statistical learning
  • Malicious code multi-model intersection detection method based on statistical learning
  • Malicious code multi-model intersection detection method based on statistical learning

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Embodiment Construction

[0052] The present invention takes the detection of botnets as an example for specific description, and any machine learning algorithm using threshold value comparison can be applied to the method as a bottom-level scoring function.

[0053] 1. Malicious behavior on the Internet

[0054] In this embodiment, a data set including real network communication traffic is used, and the data set includes various botnets.

[0055] 2. Extract features

[0056] In this embodiment, multiple features related to each network trace are extracted. These characteristics include communication frequency, communication duration, number of bytes sent and received, number of packets sent and received, protocol type, and proportion of using 3 ports (SystemPorts, UserPorts, Dynamic or Private Ports), etc., and are not limited Based on these features, the network trace is abstracted into a feature vector. The format of the vector is as Figure 8 As shown, each column is a feature point, and each r...

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Abstract

The invention proposes a malicious code multi-model cross detection method based on statistical learning, which can be better applied in the field of malicious code detection. This method introduces credibility, solves the problem that each machine learning model is isolated from each other, and provides a platform for machine learning models to learn from each other. In addition, on the fine-grained statistical learning platform, multiple machine learning models statistically analyze the mutation process of malicious code from different angles, alleviate the degradation problem of a single model, and use the APV algorithm to identify concept drift phenomena, thereby realizing multi-model joint defense .

Description

technical field [0001] The invention belongs to the technical field of computer antivirus. Background technique [0002] It is difficult for manual analysis to analyze such a large amount of newly added malicious codes in a timely manner, so machine learning technology has been widely applied to malicious code analysis and detection systems. However, network security threats are constantly mutating and evolving rapidly. While the number is increasing, more than 70% of new malicious code samples adopt self-protection techniques to evade machine learning, and some samples even use multiple evasion techniques. Therefore, the data distribution and significance level of malicious codes are constantly changing over time, which leads to serious rapid degradation problems in machine learning-based detection models. This requires that the malicious code analysis model needs to be dynamically adjusted according to changes in network security threats, quickly absorb new knowledge, and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F21/56
CPCG06F21/561G06F21/563
Inventor 王志余沛然孙心怡魏然邱克帆
Owner NANKAI UNIV
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