ET MALWARE Win32/AppleJeus CnC Checkin (POST)

alert http $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET MALWARE Win32/AppleJeus CnC Checkin (POST)";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.uri;
    content:"/daemon/update.php"; bsize:18; fast_pattern;
    http.header_names;
    content:"auth_timestamp|0d 0a|auth_signature|0d 0a|";
    http.request_body;
    content:"rlz="; startswith;
    content:"&ei="; distance:0;
    content:"&act=check"; endswith;
    reference:url,volexity.com/blog/2022/12/01/buyer-beware-fake-cryptocurrency-applications-serving-as-front-for-applejeus-malware;
    classtype:trojan-activity;
    sid:2041664; rev:1;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2022_12_02, deployment Perimeter, deployment SSLDecrypt, malware_family Win32_AppleJeus, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_12_02, reviewed_at 2025_10_24;
)