alert tcp $HOME_NET any -> $EXTERNAL_NET $HTTP_PORTS (msg:"ET MALWARE Win32.Inject.zy Checkin Post"; flow:established,to_server; dsize:8; content:"|16 00 00 00 00 00 00 00|"; classtype:command-and-control; sid:2007966; rev:2; metadata:created_at 2010_07_30, confidence Medium, signature_severity Major, updated_at 2019_07_26;)