alert tcp $HOME_NET 1024: -> $EXTERNAL_NET 1024: (msg:"ET MALWARE Vipdataend C&C Traffic Checkin variant 2"; flowbits:set,ET.vipdataend; flow:established,to_server; dsize:<22; content:"|3a|"; depth:5; offset:2; content:"|7c|win "; within:12; classtype:command-and-control; sid:2009025; rev:3; metadata:created_at 2010_07_30, signature_severity Major, updated_at 2019_07_26;)