alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET DELETED PHP/Mayhem Checkin via HTTP POST"; flow:established,to_server; content:"POST"; http_method; content:"Pragma|3a 20|1337|0d 0a|"; http_header; fast_pattern:only; content:!"User-Agent|3a 20|"; http_header; content:!"Referer|3a 20|"; http_header; content:!"Accept"; http_header; content:".php HTTP/1.0|0d 0a|"; reference:url,www.blackhat.com/docs/eu-15/materials/eu-15-KA-Automating-Linux-Malware-Analysis-Using-Limon-Sandbox.pdf; classtype:trojan-activity; sid:2022195; rev:2; metadata:created_at 2015_11_30, signature_severity Unknown, updated_at 2019_07_26;)