alert tcp $HOME_NET any -> $EXTERNAL_NET $HTTP_PORTS (msg:"ET MALWARE Socks666 Successful Connect Packet Packet"; flowbits:isset,BS.BPset; flow:established,to_server; dsize:16; content:"|9a 02 08 00|"; offset:0; depth:4; flowbits:set,BS.BPcheckin; tag:session,300,seconds; classtype:trojan-activity; sid:2006397; rev:6; metadata:created_at 2010_07_30, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_07_26;)