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Masc - A Web Malware Scanner

| Post sponsored by FaradaySEC | Multiuser Pentest Environment

A malware (web) scanner developed during CyperCamp Hackathon 2017.

Features
At the moment, there are some features avaiable for any type of website (custom or CMS) and some of them only available for specific platforms:
  • Scan any website for malware using OWASP WebMalwareScanner checksum, YARA rules databases and ClamAV engine (if available)
  • Perform some cleaning operations to improve website protection
  • Monitor the website for changes. Details are written in a log file
  • Scan your site to know if it has been infected with some malware
  • List your local backups
  • Logging support
  • Backup your site
  • Restore website
  • Scan for suspect files and compare with a clean installation (for Wordpress and Drupal)
  • Clean up your site to avoid giving extra information to attackers (only available for Wordpress)

Requirements
First of all, notice that this tool is developed under Linux and, at the moment, it has been tested only under this Operating System
  • Python >= 3
  • Some Python libraries
    • python-magic
    • yara-python
    • watchdog
    • termcolor
    • pypandoc
    • progress
santi@zenbook:$ pip3 install python-magic yara-python watchdog termcolor pypandoc progress
  • ClamAV to integrate with its engine (optional but recommended)

Notice
In my notebook, after upgrading to Debian testing, masc became to show an error related to Yara
OSError: /usr/lib/libyara.so: cannot open shared object file: No such file or directory
After trying a lot of solutions I found in the Internet, I realized that this file was located in my computer in /usr/local/lib/python3.5/dist-packages/usr/lib, so I created a symbolic link from the previous path to /usr/lib
santi@zenbook:$ ln -s /usr/local/lib/python3.5/dist-packages/usr/lib/libyara.so /usr/lib/libyara.so
And now, masc and Yara library are running with no problems.

Notice
masc is developed under Linux and it has not been tested under any other Operating System.
Anyway, it should run without problems under any Unix-friendly OS. In particular, in Mac OSX I have noticed it's neccesary to install Homebrew to use python-magic library propery as libmagic. Check first the previous link to the brew homepage and then you will be able to install as I show below:
santi@zenbook:$ brew install libmagic

Installation
To install masc on your computer, you can download a release, untar it and try. You can also install it usign pip ('pip3 install masc')

Usage
masc 0.2.2 (http://github.com/sfaci/masc)
usage: masc.py [-h] [--add-file FILENAME] [--add-word STRING] [--clean-cache]
               [--clean-site] [--list-backups] [--make-backup] [--monitor]
               [--name NAME] [--path PATH] [--rollback] [--scan]
               [--site-type {wordpress,drupal,custom}]

optional arguments:
  -h, --help            show this help message and exit
  --add-file FILENAME   Add a suspect file to the dictionary
  --add-word STRING     Add a suspect content to the dictionary
  --clean-cache         Clean masc cache (cache and logs files, NO backups)
  --clean-site          Clean up the site to hide information to attackers
  --list-backups        List local backups
  --make-backup         Create a local backupv of the current installation
  --monitor             Monitor site to detect changes
  --name NAME           Name assigned to the scanned installation
  --path PATH           Website installation path
  --rollback            Restore a local backup
  --scan                Scan website for malware
  --site-type {wordpress,drupal,custom}
                        which type of web you want to scan:: wordpress,
                        joomla, drupal or magento

Test
There is a repository in the Docker Hub to perform tests masc-wordpress

Documentation
You can find a complete tutorial about how to use masc in the wiki

Author
Santiago Faci [email protected]


Masc - A Web Malware Scanner Masc - A Web Malware Scanner Reviewed by Zion3R on 10:12 AM Rating: 5