alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Win32/Enchanim Checkin"; flow:established,to_server; http.method; content:"GET"; nocase; http.uri; content:"svchost.exe"; fast_pattern; http.user_agent; content:"Mozilla/4.0 (compatible|3b 20|MSIE 5.01|3b 20|Windows NT 5.0)"; reference:md5,539d3b15e9c3882ac70bb1ac7f90a837; classtype:command-and-control; sid:2016707; rev:6; metadata:created_at 2013_04_01, malware_family Win32_Enchanim, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_09_18;)