ET MALWARE BitterAPT Kiwi2.0 Data Exfiltration Attempt

Query · suricata

flow:established,to_server;
http.method;
content:"POST";
http.uri;
content:".php|3f|mn|3d|"; fast_pattern;
http.header_names;
content:"|0d 0a|Host|0d 0a|Content-Type|0d 0a|Content-Length|0d 0a 0d 0a|";
http.request_body;
content:"Content-Disposition|3a 20|form-data|3b 20|name|3d 22|file|22 3b 20|filename|3d 22|";
target:src_ip;
Raw source ET MALWARE BitterAPT Kiwi2.0 Data Exfiltration Attempt · 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 BitterAPT Kiwi2.0 Data Exfiltration Attempt";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.uri;
    content:".php|3f|mn|3d|"; fast_pattern;
    http.header_names;
    content:"|0d 0a|Host|0d 0a|Content-Type|0d 0a|Content-Length|0d 0a 0d 0a|";
    http.request_body;
    content:"Content-Disposition|3a 20|form-data|3b 20|name|3d 22|file|22 3b 20|filename|3d 22|";
    reference:url,www.ctfiot.com/219079.html;
    reference:url,x.com/ViriBack/status/1937465516873887999;
    classtype:trojan-activity;
    sid:2063239; rev:1;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, affected_product Windows_11, attack_target Client_and_Server, tls_state plaintext, created_at 2025_06_30, deployment Perimeter, malware_family KugelBlitz, malware_family Kiwi2_0, performance_impact Low, confidence High, signature_severity Major, tag BitterAPT, tag APT_C_08, updated_at 2025_06_30, mitre_tactic_id TA0037, mitre_tactic_name Command_And_Control, mitre_technique_id T1041, mitre_technique_name Exfiltration_Over_C2_Channel;
    target:src_ip;
)

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