alert tcp $EXTERNAL_NET 3128:9000 -> $HOME_NET any (msg:"ET DELETED Hupigon CnC Client Status"; flow:established,to_server; flowbits:isset,ET.Hupinit2; dsize:<6; content:"|0d 0a|"; classtype:command-and-control; sid:2009291; rev:2; metadata:created_at 2010_07_30, signature_severity Unknown, updated_at 2019_07_26;)