alert http $HOME_NET any -> $EXTERNAL_NET 8080 (msg:"ET MALWARE Emotet CnC Beacon"; flow:established,to_server; http.method; content:"GET"; http.uri; content:".php"; http.header; pcre:"/^Host\x3a\x20[^\r\n]+\r\n(?:Cache-Control|Pragma)\x3a\x20no-cache\r\n(?:\r\n)?$/"; http.start; content:".php|20|HTTP/1.1|0d 0a|Host|3a|"; fast_pattern; http.header_names; content:!"User-Agent|0d 0a|"; content:!"Accept"; content:!"Referer|0d 0a|"; http.host; content:!".360.cn"; reference:md5,518d189f8922280c81ab123604076dfd; classtype:command-and-control; sid:2035075; rev:7; metadata:attack_target Client_Endpoint, created_at 2015_06_11, deployment Perimeter, performance_impact Significant, signature_severity Major, tag c2, updated_at 2024_04_04, mitre_tactic_id TA0010, mitre_tactic_name Exfiltration, mitre_technique_id T1041, mitre_technique_name Exfiltration_Over_C2_Channel;)