ET MALWARE Koadic CnC Exfiltration (POST)

alert http $HOME_NET any -> $EXTERNAL_NET 1024: (
    msg:"ET MALWARE Koadic CnC Exfiltration (POST)";
    flow:established,to_server;
    urilen:1;
    http.method;
    content:"POST";
    http.uri;
    content:"|2f|";
    http.user_agent; bsize:102;
    content:"Mozilla|2f|5|2e|0|20 28|compatible|3b 20|MSIE|20|8|2e|0|3b 20|Windows|20|NT|20|5|2e|1|3b 20|Trident|2f|4|2e|0|3b 20 2e|NET|20|CLR|20|1|2e|1|2e|4322|3b 20 2e|NET|20|CLR|20|2|2e|0|2e|50727|29|";
    http.cookie; bsize:40;
    content:"session="; startswith; fast_pattern;
    pcre:"/^[a-z0-9]{32}$/R";
    reference:md5,2b1aadc3c4eebdd8b4bbd4cbb1fb2468;
    reference:url,twitter.com/naumovax/status/1790298161178714149;
    classtype:trojan-activity;
    sid:2052621; rev:1;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, tls_state plaintext, created_at 2024_05_15, deployment Perimeter, malware_family Koadic, confidence High, signature_severity Critical, tag RAT, updated_at 2024_05_15;
)