alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Backdoor.Win32.Gbod.dv Checkin"; flow:established,to_server; http.method; content:"POST"; nocase; http.user_agent; content:"Opera/"; content:"Presto/"; fast_pattern; http.header_names; content:!"|0d 0a|Accept|0d 0a|"; http.request_body; content:"a="; content:"&b="; content:"&c="; classtype:command-and-control; sid:2013154; rev:6; metadata:created_at 2011_07_01, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_02_20;)