REPLACE PARTS WITH FRESH
If you are using a CMS or Forum (Joomla, WordPress, SMF, osCommerce, etc) replace any directories that are standard and contain no custom modifications. For WordPress you can download the latest official release from here . Very often your WordPress plugins will be heavily affected with malware, viruses and backdoors. We are experts at extracting and removing these issues from these plugins but as this is most probably your first time in doing this we recommend you delete and re-install all of your plugins.