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OWASP Web Malware Scanner Project

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OWASP Web Malware Scanner Tool Project

The OWASP Web Malware Scanner is a malware scanner for web applications. The goal is to be able to scan a web application using a community driven signature database. The Web Malware Scanner works by scanning each files of the web application for known malwares.

The Web Malware Scanner is not a vulnerability scanner, it is a malware scanner used to identify compromised web application installations.

The deliverable is a python application.


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 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 YARA rules. Finally, the scan will look for insecure permissions for every files and folders.

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.


  • Support for Windows, Linux and MacOS
  • Over 500 000 malware MD5 hashes
  • Over 500 YARA ruleset databases


Windows: Get it from github

Linux: Get it from github

Mac OS: Get it from github


The Web Malware Scanner Project is released under the BSD 4-clause "Original" or "Old" License.

Project Resources

Source Code


Issue Tracker

Project Leader

Maxime Labelle ( [email protected] )


Project Type Files TOOL.jpg
Incubator Project Owasp-builders-small.png
Affero General Public License 3.0

News and Events

  • [01 Jun 2016] Working on version 1.0; New GUI, Automatic updates, new signature database, Standalone application for Windows, Linux and MacOS
  • [04 Mar 2016] The Web Malware Scanner is now an official OWASP Project

How can I participate in your project?

All you have to do is make the Project Leader's aware of your available time to contribute to the project. It is also important to let the Leader's know how you would like to contribute and pitch in to help the project meet it's goals and milestones. There are many different ways you can contribute to an OWASP Project, but communication with the leads is key.

I'm not a programmer, how can I help?

One thing you can do, if you want to help, is to send infected or suspicious files to the project leader. These files will be analysed and added to the signature database if needed.


The first contributors to the project were:


The base application is already completed. The next step is to populate the signature database and optimize the current codebase.

As of March, 2016, the highest priorities for the next 6 months are:

  • Populate the signature database
  • Optimize the codebase
  • Incorporate new ideas and security assessments
  • Add scan for compressed files
  • Report false positives
  • Automatic updates

Getting Involved

Involvement in the development and promotion of Web Malware Scanner Project is actively encouraged! You do not have to be a security expert or a programmer to contribute. Some of the ways you can help are as follows:


We could implement some of the later items on the roadmap sooner if someone wanted to help out with unit or automated regression tests


Do you have a flair for finding bugs in software? We want to product a high quality product, so any help with Quality Assurance would be greatly appreciated. Let us know if you can offer your help.


Please send us feedback about:

  • What do like?
  • What don't you like?
  • What features would you like to see prioritized on the roadmap?
  • Do you think we forgot something important? Let us know!

We feel that the signature database is the most important aspect of this project. If the database is updated often with new signatures, this project will remain useful.