alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Win32/Emotet.C Checkin"; flow:to_server,established; urilen:1; http.method; content:"POST"; http.header; content:"MASE|0d 0a|"; http.request_body; content:"name=|22|c1|22 0d 0a 0d 0a|c"; reference:md5,37d530ffa0bf1129f2db63b75fccce28; classtype:command-and-control; sid:2020156; rev:8; metadata:created_at 2015_01_08, malware_family Win32_Emotet_C, signature_severity Major, updated_at 2020_05_14;)