ET MALWARE Konni APT CnC Checkin (GET)

Query · suricata

flow:established,to_server;
http.method;
content:"GET";
urilen:57;
http.uri;
content:"|2f|list|2e|php|3f|"; startswith; fast_pattern;
pcre:"/^[0-9]{18}\x3d[a-zA-Z0-9\x25\x2f\x2b]{28}$/R";
http.user_agent;
content:"WindowsPowerShell/";
http.connection; bsize:10;
content:"Keep-Alive";
target:src_ip;
Raw source ET MALWARE Konni APT CnC Checkin (GET) · 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 -> $EXTERNAL_NET any (
    msg:"ET MALWARE Konni APT CnC Checkin (GET)";
    flow:established,to_server;
    http.method;
    content:"GET";
    urilen:57;
    http.uri;
    content:"|2f|list|2e|php|3f|"; startswith; fast_pattern;
    pcre:"/^[0-9]{18}\x3d[a-zA-Z0-9\x25\x2f\x2b]{28}$/R";
    http.user_agent;
    content:"WindowsPowerShell/";
    http.connection; bsize:10;
    content:"Keep-Alive";
    reference:md5,ad13b36b7a9e7e7001c44334bfa6a458;
    reference:url,app.any.run/tasks/41ceae4d-7efe-4d56-b3c8-fdaa49464fac;
    classtype:command-and-control;
    sid:2059085; rev:1;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, tls_state plaintext, created_at 2025_01_09, deployment Perimeter, malware_family KONNI, performance_impact Low, confidence High, signature_severity Critical, tag c2, updated_at 2025_01_09, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1071, mitre_technique_name Application_Layer_Protocol;
    target:src_ip;
)

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