alert http $EXTERNAL_NET any -> $HTTP_SERVERS any (msg:"ET EXPLOIT Fredcot campaign php5-cgi initial exploit"; flow:established,to_server; http.user_agent; content:"Mobile/10A5355d"; http.request_body; content:"<?php"; startswith; content:"fredcot"; fast_pattern; http.header_names; content:!"|0d 0a|Accept"; content:!"|0d 0a|Referer|0d 0a|"; reference:cve,2012-1823; reference:url,eindbazen.net/2012/05/php-cgi-advisory-cve-2012-1823/; classtype:web-application-attack; sid:2017663; rev:3; metadata:created_at 2013_11_05, signature_severity Major, updated_at 2024_02_20;)