alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Knock.php Shiz or Rohimafo CnC Server Contact URL"; flow:established,to_server; http.method; content:"GET"; http.uri; content:"knock.php?n="; nocase; content:"=seller-"; nocase; distance:0; http.header_names; content:!"User-Agent"; reference:url,asert.arbornetworks.com/2010/09/shiz-and-rohimafo-malware-cousins/; reference:md5,0bb4662b54f02c989edc520314fc20ea; reference:md5,a671eb9979505119f4106a990c4ef7ab; reference:md5,3614d4f6527d512b61c27c4e213347a6; classtype:command-and-control; sid:2011520; rev:6; metadata:created_at 2010_09_29, signature_severity Major, updated_at 2020_08_18;)