ET RETIRED Win32/Cryptbot V2 Data Exfiltration Attempt

alert http $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET RETIRED Win32/Cryptbot V2 Data Exfiltration Attempt";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.uri;
    content:"/gate.php"; bsize:9;
    http.content_type;
    content:"multipart/form-data|3b 20|boundary="; startswith;
    pcre:"/^[A-Z0-9]{6,11}/Ri";
    http.header_names;
    content:!"Referer";
    http.request_body;
    content:"Content-Disposition|3a 20|form-data|3b 20|name|3d 22|files|5b 5d 22 3b 20|filename|3d 22|"; fast_pattern;
    reference:md5,859c659aee8b897aeebf4b87364cc6d1;
    classtype:trojan-activity;
    sid:2038947; rev:5;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2022_09_22, deployment Perimeter, former_category MALWARE, malware_family Cryptbot, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_09_18, reviewed_at 2024_09_18;
)