ET MALWARE Dalexis CnC Beacon

alert http $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET MALWARE Dalexis CnC Beacon";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.uri;
    content:".php";
    http.request_body;
    content:"name=|22|uploaded|22 3b 20|filename=|22|"; fast_pattern;
    content:".jpg";
    http.content_type;
    content:"multipart/form-data|3b 20|boundary="; startswith;
    http.header_names;
    content:!"Referer|0d 0a|";
    content:!"|0d 0a|Accept"; nocase;
    classtype:command-and-control;
    sid:2020933; rev:5;
    metadata:attack_target Client_Endpoint, created_at 2015_04_16, deployment Perimeter, signature_severity Major, tag c2, updated_at 2020_09_30, mitre_tactic_id TA0010, mitre_tactic_name Exfiltration, mitre_technique_id T1041, mitre_technique_name Exfiltration_Over_C2_Channel;
)