alert tcp $EXTERNAL_NET 443 -> $HOME_NET any (msg:"ET MALWARE Saturn Proxy C&C Activity"; flow:established,from_server; dsize:12; content:"|2d 00 00 00|"; offset:0; depth:4; content:"|00 00 55 00 00 00|"; distance:2; classtype:command-and-control; sid:2007753; rev:3; metadata:created_at 2010_07_30, confidence Medium, signature_severity Major, updated_at 2019_07_26;)