alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Trojan.Win32.Yakes.pwo Checkin"; flow:to_server,established; http.uri; content:"/stat.php?w="; content:"&i="; content:"&a="; http.user_agent; content:"Opera/6"; startswith; http.header; content:"|3b 20|LangID="; reference:md5,d40927e8c4b59a1c2af4f981ef295321; classtype:command-and-control; sid:2014604; rev:4; metadata:created_at 2012_03_02, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_04_21;)