ET MALWARE ToddyCat APT Related CurCore Activity (POST)

alert http $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET MALWARE ToddyCat APT Related CurCore Activity (POST)";
    flow:established,to_server;
    urilen:1;
    http.method;
    content:"POST";
    http.header_names;
    content:"|0d 0a|Connection|0d 0a|User-Agent|0d 0a|"; startswith;
    content:!"Referer";
    http.request_body;
    content:"sd="; startswith;
    content:"AAAAAAAAQwA6AFwAVQBzAGUAcgBzAFwA"; within:45; fast_pattern;
    content:"AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA=="; endswith;
    reference:md5,e282d63beeb78fc1ef6f954ab3296669;
    reference:url,research.checkpoint.com/2023/stayin-alive-targeted-attacks-against-telecoms-and-government-ministries-in-asia/;
    classtype:trojan-activity;
    sid:2049407; rev:1;
    metadata:attack_target Client_Endpoint, created_at 2023_11_30, deployment Perimeter, deployment SSLDecrypt, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_11_30, reviewed_at 2024_04_08;
    target:src_ip;
)