alert http $EXTERNAL_NET any -> $HTTP_SERVERS any (msg:"ET MALWARE Bossabot DDoS tool RFI attempt"; flow:to_server,established; http.method; content:"POST"; http.uri; content:"php?-d|20|allow_url"; fast_pattern; content:"auto_prepend_file|3d|php|3a 2f|"; http.request_body; content:"<?php|0d 0a|"; depth:7; reference:url,www.kernelmode.info/forum/viewtopic.php?f=16&t=3476&p=23965#p23965; reference:url,cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2012-1823; classtype:trojan-activity; sid:2019212; rev:3; metadata:created_at 2014_09_22, signature_severity Major, tag CISA_KEV, updated_at 2020_05_08;)