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Pure-FTPd with ClamAV at Directadmin Custombuild

This tutorial we integrate ClamAV into Pure-FTPd for virus scanning in Directadmin server with Custombuild. Whenever a file gets uploaded through Pure-FTPd, ClamAV will check the file and delete it if it is malware. Installing Pure-FTPd & ClamAV First we need change custom build options.conf setting Check options.conf #ClamAV-related Settings clamav=yes pureftpd_uploadscan=yes Building software Building […]

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ModSecurity Rules for Formidable Forms / Shortcodes Ultimate vulnerability

Sucuri reported Formidable Forms / Shortcodes Ultimate Exploits In The Wild On Monday, November 20th. – Formidable Forms vulnerability – read more – Shortcodes Ultimate vulnerability – read more We have not yet seen exploitation of the vulnerability, but we also decided to make the modsecurity rule for this vulnerability. If you server have certain […]

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WordPress Hidden Include

Today we found undetected malware, which keep it hidden and try loading again if it deleted. We generated Signatures to Detect these hidden includes: /index.php: {HEX}Malware.Expert.wordpress.hidden.include.0.UNOFFICIAL FOUND /wp-load.php: {HEX}Malware.Expert.wordpress.hidden.include.1.UNOFFICIAL FOUND /wp-includes/template.php: {HEX}Malware.Expert.malware.url.7od.info.0.UNOFFICIAL FOUND /wp-includes/Requests/IPconfig.ini: {HEX}Malware.Expert.generic.malware.39.UNOFFICIAL FOUND /wp-includes/js/utilities.js: {HEX}Malware.Expert.generic.malware.39.UNOFFICIAL FOUND WordPress index.php wp-load.php End of file: template.php IPconfig.ini Remove file utilities.js Remove file Final Words Use […]

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Log POST data with ModSecurity

Sometimes you may need to log all POST requests to debug or make ModSecurity rules to protect Web Server. For this you need that you have ModSecurity installed on server. Log POST data This simple rule logging all POST request data to ModSecurity AuditLog. SecRule REQUEST_METHOD “POST” \ “id:800000,phase:2,t:none,pass,nolog,auditlog,msg:’Malware.Expert – Log POST data'” This cause […]

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cPGuard – Essential Security Suite for cPanel Servers

cPGuard is an essential security addon for web hosting servers to help administrators to fight against malware threats and injections. As it exclusively works based on File System changes ( no more mod_security or FTP hooks dependency alone ), we can detect and scan any real-time changes on the server. In addition to malware/virus scanning, […]

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Custom ModSecurity Error message in apache

This tutorial we show that you can change the custom error message page to ModSecurity. Typically, you get 403 or 406 Response code when ModSecurity block access to website. Apache configuration In apache configuration files (Depend your OS & Configuration) includes / errordocument.conf ErrorDocument 403 /403.shtml Add extra row to 406 error page: ErrorDocument 406 […]

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xo.php

This malware trying write another malware to server, it’s using old cherry-plugin import/export file upload vulnerability. Here source code to malware: Source of xo.php Details $uri is infected server address. $url is base64 encoded remote server address, where trying download more malware and put server to remote access: http://fastwealthformula.online/callback/shell Remote file Final Words Use Malware […]

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ModSecurity with RBL Database

This tutorial we showing how you can use ModSecurity with RBL database’s to block access to web server. ModSecurity RBL We can use at mod_security phase 1 to optimise these rules and reduce server load, before PHP start executing requests. Here are more information how to ModSecurity processing phases. Also you can use Local DNS […]

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Disable Mod_Security on Directadmin server

If you decided to use Modsecurity on your server with DirectAdmin, there is sometimes a need to disable mod_security on server. Default custombuild installation, mod_security rules installed in: /etc/modsecurity.d/ Apache load’s ModSecurity modules and configuration in: /etc/httpd/conf/extra/httpd-modsecurity.conf Disable mod_security Easiest way disable Modsecurity is disable apache to load ModSecurity module in https-modsecurity.conf file. Just add […]

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Local DNS resolver

A DNS server or DNS Resolver is a server which contains a database of IP addresses and their associated hostnames, and in most cases, serves to resolve, or translate, those common names to IP addresses as requested. DNS servers run a special software (ex. BIND) and communicate (Listen TCP/UDP port 53) with each other using […]

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