alert tcp $HOME_NET 1024: -> $EXTERNAL_NET 1024: (msg:"ET DELETED Vipdataend C&C Traffic Checkin"; flow:established,to_server; dsize:<20; content:"|3a 20|"; offset:2; depth:6; content:"|20 7c 20|"; within:10; classtype:trojan-activity; sid:2007962; rev:9; metadata:created_at 2010_07_30, signature_severity Unknown, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_07_26;)