ET MALWARE CryptoLuck / YafunnLocker Ransomware CnC Checkin

alert http $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET MALWARE CryptoLuck / YafunnLocker Ransomware CnC Checkin";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.uri;
    content:".php?id=";
    content:"&hi"; distance:0;
    http.user_agent;
    content:"Mozilla/5.0 (Windows NT 6.1)"; fast_pattern; bsize:28;
    http.request_body;
    content:"Content-Disposition|3a 20|form-data|3b 20|name=|22|";
    http.header_names;
    content:!"Referer|0d 0a|";
    reference:md5,59109839de42d2acb44fbd7ff151fe0c;
    classtype:command-and-control;
    sid:2023533; rev:4;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2016_11_14, deployment Perimeter, malware_family Ransomware, malware_family YafunnLocker, signature_severity Major, tag Ransomware, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_08_03, mitre_tactic_id TA0040, mitre_tactic_name Impact, mitre_technique_id T1486, mitre_technique_name Data_Encrypted_for_Impact;
)