ET MALWARE TA430/Andariel APT Related DLRAT Activity (POST)

alert http $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET MALWARE TA430/Andariel APT Related DLRAT Activity (POST)";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.uri;
    content:".php"; endswith;
    http.user_agent;
    content:"dlang-requests"; bsize:14; fast_pattern;
    http.content_type;
    content:"multipart/form-data|3b 20|boundary="; startswith;
    pcre:"/^[0-9a-f]{8}(?:(-[0-9a-f]{4}){3})-[0-9a-f]{12}$/R";
    http.header_names;
    content:!"Referer";
    http.request_body;
    content:"form-data|3b 20|name=|22|type|22 3b|";
    content:"form-data|3b 20|name=|22|session|22 3b|"; distance:0;
    reference:md5,9846e2e45000984719804ec2236405bd;
    reference:url,blog.talosintelligence.com/lazarus_new_rats_dlang_and_telegram/;
    classtype:trojan-activity;
    sid:2049656; rev:1;
    metadata:attack_target Client_Endpoint, created_at 2023_12_12, deployment Perimeter, performance_impact Low, confidence High, signature_severity Major, updated_at 2023_12_12;
    target:src_ip;
)