ET MALWARE [ANY.RUN] Konni.APT Exfiltration

Query · suricata

flow:established,to_server;
urilen:11;
http.method;
content:"POST";
http.uri;
content:"/upload.php";
http.content_type;
content:"application/x-www-form-urlencoded"; startswith;
http.request_body;
content:"fn=";
content:"&fd="; distance:0;
content:"&r=63"; distance:0;
http.header_names;
content:"|0d 0a|Content-Type|0d 0a|Host|0d 0a|Content-Length|0d 0a|Expect|0d 0a|Connection|0d 0a 0d 0a|"; bsize:60; fast_pattern;
threshold:type limit,track by_dst,seconds 1300,count 1;
Raw source ET MALWARE [ANY.RUN] Konni.APT Exfiltration · Suricata
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Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert http $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET MALWARE [ANY.RUN] Konni.APT Exfiltration";
    flow:established,to_server;
    urilen:11;
    http.method;
    content:"POST";
    http.uri;
    content:"/upload.php";
    http.content_type;
    content:"application/x-www-form-urlencoded"; startswith;
    http.request_body;
    content:"fn=";
    content:"&fd="; distance:0;
    content:"&r=63"; distance:0;
    http.header_names;
    content:"|0d 0a|Content-Type|0d 0a|Host|0d 0a|Content-Length|0d 0a|Expect|0d 0a|Connection|0d 0a 0d 0a|"; bsize:60; fast_pattern;
    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:2046820; 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;
)

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