ET MALWARE Kimsuky/TA406 Payload Request (GET)

Query · suricata

flow:established,to_server;
http.method;
content:"GET";
http.uri;
content:"|2e|php|3f|uid|3d|";
content:"&key="; distance:0;
http.header_names; bsize:84;
content:"|0d 0a|accept|0d 0a|accept-language|0d 0a|ua-cpu|0d 0a|accept-encoding|0d 0a|user-agent|0d 0a|host|0d 0a|connection|0d 0a 0d 0a|"; nocase; fast_pattern;
http.accept_enc;
content:"gzip|2c 20|deflate";
target:src_ip;
Raw source ET MALWARE Kimsuky/TA406 Payload Request (GET) · Suricata
Esc
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 Kimsuky/TA406 Payload Request (GET)";
    flow:established,to_server;
    http.method;
    content:"GET";
    http.uri;
    content:"|2e|php|3f|uid|3d|";
    content:"&key="; distance:0;
    http.header_names; bsize:84;
    content:"|0d 0a|accept|0d 0a|accept-language|0d 0a|ua-cpu|0d 0a|accept-encoding|0d 0a|user-agent|0d 0a|host|0d 0a|connection|0d 0a 0d 0a|"; nocase; fast_pattern;
    http.accept_enc;
    content:"gzip|2c 20|deflate";
    reference:url,x.com/naumovax/status/1965055436039839952;
    reference:md5,6d18166da354efacd541bcac622a6e43;
    classtype:trojan-activity;
    sid:2064452; 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_09_08, deployment Perimeter, malware_family Kimsuky, performance_impact Moderate, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, tag TA406, updated_at 2025_09_08, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1105, mitre_technique_name Ingress_Tool_Transfer;
    target:src_ip;
)

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