ET MALWARE [ANY.RUN] Konni.APT Keep-Alive

alert http $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET MALWARE [ANY.RUN] Konni.APT Keep-Alive";
    flow:established,to_server;
    http.method;
    content:"GET";
    http.uri;
    content:"/list.php?f="; startswith; fast_pattern;
    content:"&r=";
    http.user_agent;
    content:"WindowsPowerShell/";
    http.header_names;
    content:!"Referer";
    threshold:type limit,track by_dst,seconds 1300,count 1;
    reference:md5,cc4aeb24de3cf447f4902de124f61a59;
    reference:url,app.any.run/tasks/94d2285e-c039-4ae1-8fcb-debd62fdc096;
    reference:url,community.emergingthreats.net/t/konni-apt/765;
    classtype:trojan-activity;
    sid:2046821; rev:1;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2023_07_14, deployment Perimeter, confidence High, signature_severity Critical, tag Konni, updated_at 2023_09_01;
)