ET MALWARE Win32/Agent.AETZ CnC Checkin

alert http $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET MALWARE Win32/Agent.AETZ CnC Checkin";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.user_agent;
    content:"Microsoft Internet Explorer";
    http.request_body;
    content:"|7b 22|token|22 3a 20 22|"; startswith; fast_pattern;
    content:"|22 2c 20 22|installid|22 3a 20 22|"; distance:0;
    content:"|22 2c 20 22|ver|22 3a 20 22|"; distance:0;
    content:"|22 2c 20 22|agent|22 3a 20 22|"; distance:0;
    threshold:type limit, track by_src, seconds 180, count 1;
    reference:md5,e4ca9c56bb6c3e7d68049ceca5d96f09;
    classtype:command-and-control;
    sid:2039616; rev:1;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2022_11_01, deployment Perimeter, deployment SSLDecrypt, malware_family Win32_Agent_AETZ, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_11_01;
)