vBulletin is a popular forum platform that is also starting to become a popular target for web attacks. vBulletin (and vbSEO) had some serious security vulnerabilities in older versions, and when a forum using them is not properly updated, it ends up hosting malware like the one we will analyze here in this post.
vBulletin is very unique on how it stores its templates and plugins, It’s different than WordPress and Joomla, all the content is saved in the database. That makes it a bit more complicated for webmasters because they can’t just use common command line tools (like grep) to search through all their files. They need to use phpMyAdmin or another database tool to try to find and fix those issues.