alert tcp $HOME_NET any -> $EXTERNAL_NET any (msg:"ET DELETED Win32.VB.OWR Checkin"; flow:to_server,established; content:"|12 01 00|"; depth:3; content:"|00 00 00 00 00 00 15 00 06 01 00 1B 00 01 02 00 1C 00|"; within:19; reference:md5,7684532e7e1d717427f6842e9d5ecd56; classtype:trojan-activity; sid:2013121; rev:3; metadata:created_at 2011_06_28, signature_severity Unknown, updated_at 2019_07_26;)