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Static feature based web page malicious scenarios detection method

A technology of malicious scripts and detection methods, applied in computing, transmission systems, computer security devices, etc.

Inactive Publication Date: 2009-04-15
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The traditional antivirus technology mainly relies on signature matching to detect viruses, Trojan horses, and malicious webpages. This method is very effective for virus programs with fixed and unchanging characteristics, but has no effect on webpage scripts that have been encrypted and inserted into interference processing. , it is powerless to detect newly released webpage scripts exploiting vulnerabilities and newly released viruses and Trojan horse programs

Method used

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  • Static feature based web page malicious scenarios detection method
  • Static feature based web page malicious scenarios detection method
  • Static feature based web page malicious scenarios detection method

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Embodiment Construction

[0025] The method for detecting malicious webpage scripts based on statistical features proposed by the present invention, its overall flow is as follows figure 1 shown. First of all, you need to clear the interfering sentences in the web page. The first step is to clear the 00 code in the web page. The so-called code 00 refers to the character with an ASCII value of 00. Adding code 00 to a web page does not affect the operation of the web page, but it will affect the detection of malicious scripts. Therefore, it is necessary to clear the code 00 in the web page before statistical work is performed. . The second step is to clear the comment statement in the web page. A comment statement in a web page starts with '* / ' and ends with '* / ', or starts with ' / / '. It is a description of a certain code in the web page and has no effect when the web page is running, but It will affect the statistics of abnormal characters, so the comment statement in the webpage needs to be cleared...

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PUM

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Abstract

This invention relates to computer safety field, which uses ill script statistical property to rapidly find out ill script. The principle of this invention uses ill page codes through process and the processed normal characters and abnormal characters have apparent difference and uses page character statistical property to test ill script.

Description

Technical field [0001] The patent of the invention belongs to the field of computer security. It mainly uses the statistical features in malicious scripts to quickly and accurately detect whether malicious scripts are contained in webpages, thereby realizing rapid detection of harmful webpages in the network, and blocking the operation of malicious scripts in advance. Users provide a secure network environment. Background technique [0002] Computer viruses, Trojan horses, spyware and malicious codes are the most important security threats to computer networks in recent years. In addition to spam emails, there is another important way of spreading computer viruses, Trojans, spyware and malicious codes, which is to use specially constructed webpages to spread viruses and Trojans to the computers of users who visit the webpages. This kind of webpage mainly uses various loopholes in the operating system, browser, plug-in, etc. to spread executable code to the user's computer f...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/30G06F21/00H04L29/06G06F21/56
Inventor 陶然李志勇张昊王越杜华
Owner BEIJING INSTITUTE OF TECHNOLOGYGY