alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Win32/Enosch.A gtalk connectivity check"; flow:to_server; http.uri; content:"/index.html"; http.user_agent; content:"gtalk"; fast_pattern; bsize:5; http.host; content:"www.google.com"; http.header_names; content:"|0d 0a|User-Agent|0d 0a|Host|0d 0a 0d 0a|"; depth:22; endswith; reference:md5,b13db8b21289971b3c88866d202fad49; classtype:trojan-activity; sid:2018508; rev:5; metadata:created_at 2014_05_30, malware_family Win32_Enosch_A, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_10_19;)