ET MALWARE Win32/GenKryptik.GCJX Data Exfiltration Attempt

alert http $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET MALWARE Win32/GenKryptik.GCJX Data Exfiltration Attempt";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.uri;
    content:"/gate.php?namelog="; startswith; fast_pattern;
    http.content_type;
    content:"multipart/form-data|3b 20|boundary|3d|";
    pcre:"/^(?:\x2d){21}[a-f0-9]{15}/R";
    http.request_body;
    content:"|2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d|"; startswith;
    pcre:"/^[a-f0-9]{15}/R";
    content:"Content-Disposition|3a 20|form-data|3b 20|name|3d 22|file|22 3b 20|filename|3d 22|"; distance:0;
    content:"|0d 0a|Content-Type|3a 20|application/octet-stream"; distance:0;
    content:"|0d 0a 0d 0a|PK"; distance:0;
    content:"Processes.txt";
    content:"Screenshot.jpg";
    content:"Software.txt";
    Content:"UserInformation.txt";
    content:"Windows.txt";
    reference:md5,06c4268136192ad2d04af2c91c4be522;
    classtype:trojan-activity;
    sid:2044432; rev:1;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2023_03_02, deployment Perimeter, malware_family Win32_GenKryptik_GCJX, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_03_02;
)