ET RETIRED Bitter APT Related Activity (GET)

alert http $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET RETIRED Bitter APT Related Activity (GET)";
    flow:established,to_server;
    http.method;
    content:"GET";
    http.uri;
    content:"/mml.php"; fast_pattern;
    http.user_agent;
    content:"curl/";
    http.header_names;
    content:"|0d 0a|Host|0d 0a|User-Agent|0d 0a|Accept|0d 0a 0d 0a|";
    reference:url,infosec.exchange/@ginkgo/112047866464514906;
    reference:md5,10f4479d5f531def842a712277ae9611;
    classtype:trojan-activity;
    sid:2051513; rev:2;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, affected_product Windows_11, attack_target Client_Endpoint, tls_state plaintext, created_at 2024_03_06, deployment Perimeter, former_category MALWARE, malware_family Bitter_APT, performance_impact Low, confidence High, signature_severity Major, tag Bitter_APT, tag Malicious_LNK, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_10_03, reviewed_at 2024_10_03;
    target:src_ip;
)