Difference between revisions of "OWASP Web Malware Scanner Project"

Revision as of 16:11, 4 March 2016

OWASP Tool Project Template

The OWASP Web Malware Scanner is a malware scanner for web applications. The goal is to be able to scan a web application folder for any malware using a community driven signature database. The Web Malware Scanner is run locally to the web application folder much like an anti-virus. This project was created because the ClamAV project and other similar open source tools were unable to detect some infected files on some of our production servers and we needed a solution to scan our web applications with better results.

The deliverable is a python application.

Description

Web Malware Scanner is a simple malware scanner for web applications. It can be used to identify compromised Wordpress, Joomla and other popular web application installations.

The Web Malware Scanner must be run locally to the web application installation folder. It will scan each files and compare them to the Web Malware Scanner's signature database. Each file is scanned for any known malware MD5 checksum and also for any malware patterns using regular expressions. Finally, the scan will look for insecure permissions for every files and folders.

The Web Malware Scanner Project uses regular expressions to search files for malware signatures as opposed to the custom ClamAV signature database wildcard syntax, which is somewhat more limited.

The ClamAV custom wildcard syntax only includes the following wildcards: ?? Matches any byte. * Matches any number of bytes (including 0 byte). {n} Matches n bytes. {-n} Matches n bytes or less. {n-} Matches at least n bytes. {m-n} Matches between m and n bytes. (0a|1b) Matches 0a or 1b.

The Web Malware Scanner project uses standard regular expressions for a much wider range of matching patterns.

The default signature database is taken in parts from ClamAV's signature database, SaneSecurity's signature database and other sources.

The goal of the OWASP Web Malware Scanner Project is to have a community driven signature database. You are more than welcome to contribute to this project by sending us new malware signatures.