alert tcp $HOME_NET any -> $EXTERNAL_NET 1024: (msg:"ET MALWARE Backdoor.Win32.VB.brg C&C Checkin"; flow:established,to_server; content:"Status|2a 28|Idle|2e 2e 2e 29 2a|"; depth:17; offset:0; classtype:command-and-control; sid:2007922; rev:5; metadata:created_at 2010_07_30, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_07_26;)