alert tcp $HOME_NET 1024: -> $EXTERNAL_NET 1024: (msg:"ET MALWARE Ruskill/Palevo CnC PONG"; flow:established,to_server; content:"PONG |3a|hub.us.com"; depth:16; reference:url,ore.carnivore.it/malware/hash/d4dc8459a34ea14d856e529d3a9e0362; reference:url,sebdraven.tumblr.com/post/6769853139/palevo-analysises; classtype:command-and-control; sid:2013246; rev:2; metadata:created_at 2011_07_11, signature_severity Major, updated_at 2019_07_26;)