alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET MALWARE Snap Bot Receiving DDoS Command"; flow:to_client,established; content:"|0d 0a 0d 0a|"; content:"|7c|ddos|7c|"; distance:1; within:10; nocase; pcre:"/^\d+\x7cddos\x7c([^\x7c]+\x7c){5}[^\x7c]+$/mi"; reference:md5,a45a1ccf6842b032b7f2ef2f2255c81c; reference:md5,e070ce714e343052d19a7e3213ee2a9a; reference:url,ddanchev.blogspot.com/2011/05/peek-inside-new-ddos-bot-snap.html; classtype:trojan-activity; sid:2014733; rev:5; metadata:created_at 2012_05_11, signature_severity Major, updated_at 2019_07_26;)