ET MALWARE [PTsecurity] Donut Ransomware CnC Checkin

alert http $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET MALWARE [PTsecurity] Donut Ransomware CnC Checkin";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.uri;
    content:".php";
    http.header;
    content:"Expect|3a 20|100-continue|0d 0a|";
    http.request_body;
    content:"pc_id="; depth:6;
    content:"pc_key="; distance:0;
    content:"win_ver="; fast_pattern; distance:0;
    http.content_type;
    content:"application/x-www-form-urlencoded"; endswith;
    http.header_names;
    content:!"Referer";
    content:!"User-Agent";
    content:!"Accept";
    content:!"Cache";
    classtype:command-and-control;
    sid:2025595; rev:4;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2018_06_19, deployment Perimeter, malware_family Donut, confidence High, signature_severity Major, tag Ransomware, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_09_16, mitre_tactic_id TA0040, mitre_tactic_name Impact, mitre_technique_id T1486, mitre_technique_name Data_Encrypted_for_Impact;
)