alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Emotet CnC Beacon"; flow:established,to_server; http.method; content:"POST"; http.uri; content:".php"; endswith; http.request_body; content:"<email_accounts_list>"; fast_pattern; http.header_names; to_lowercase; content:!"|0d 0a|user-agent|0d 0a|"; content:!"|0d 0a|accept"; content:!"|0d 0a|referer|0d 0a|"; reference:md5,e24831e3f808116b30d85731c545e3ee; classtype:command-and-control; sid:2019704; rev:5; metadata:attack_target Client_Endpoint, created_at 2014_11_12, deployment Perimeter, signature_severity Major, tag c2, updated_at 2024_04_21, mitre_tactic_id TA0010, mitre_tactic_name Exfiltration, mitre_technique_id T1041, mitre_technique_name Exfiltration_Over_C2_Channel;)