alert tcp $HOME_NET any -> $EXTERNAL_NET $HTTP_PORTS (msg:"ET MALWARE Socks666 Connection Initial Packet"; flow:established,to_server; dsize:24; content:"|9a 02 06 00|"; offset:0; depth:4; flowbits:set,BS.BPcheckin; flowbits:noalert; classtype:trojan-activity; sid:2006395; rev:5; metadata:created_at 2010_07_30, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_07_26;)