ET MALWARE Win32/SSLoad Registration Activity (POST)

alert http $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET MALWARE Win32/SSLoad Registration Activity (POST)";
    flow:established,to_server;
    flowbits:set,ET.SSLoad1_1.Registration;
    http.method;
    content:"POST";
    http.uri; bsize:12;
    content:"/api/gateway"; fast_pattern;
    http.referer; bsize:3;
    content:"|2a 2f 2a|";
    http.request_body;
    content:"|7b 22|version|22 3a 22|"; startswith;
    content:"|22 2c 22|ip|22 3a 22|"; distance:0;
    content:"|22 2c 22|domain|22 3a 22|"; distance:0;
    content:"|22 2c 22|hostname|22 3a 22|"; distance:0;
    content:"|22 2c 22|arch|22 3a 22|"; distance:0;
    content:"|22 2c 22|os_version|22 3a 22|"; distance:0;
    content:"|22 2c 22|cur_user|22 3a 22|"; distance:0;
    content:"|22 2c 22|owner|22 3a 22|"; distance:0;
    reference:md5,d6b0726de53f8a3da67a6e693485ca7a;
    reference:md5,ca303668b5420c022ef9c78ce1f2bfb7;
    classtype:trojan-activity;
    sid:2052098; 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_01_18, deployment Perimeter, malware_family SSLoad, performance_impact Low, confidence High, signature_severity Major, updated_at 2024_04_18, former_sid 2856177;
    target:src_ip;
)