alert tcp $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Linux/Yangji.A Checkin"; flow:established,to_server; dsize:1024; content:"cngameanti|7c|"; depth:11; pcre:"/^\x2d?\d/R"; reference:md5,b5badeb16414cba66999742601c092b8; classtype:command-and-control; sid:2019229; rev:1; metadata:created_at 2014_09_24, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_07_26;)