ET MALWARE Win32/KLBanker Activity (GET)

Query · suricata

flow:established,to_server;
http.method;
content:"GET";
http.uri;
content:".php"; endswith;
http.user_agent;
content:"|22|Mozilla/5.0|20|"; fast_pattern; startswith;
content:"|22|"; endswith;
http.header_names;
content:!"Referer|0d 0a|";
target:src_ip;
Raw source ET MALWARE Win32/KLBanker Activity (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 Win32/KLBanker Activity (GET)";
    flow:established,to_server;
    http.method;
    content:"GET";
    http.uri;
    content:".php"; endswith;
    http.user_agent;
    content:"|22|Mozilla/5.0|20|"; fast_pattern; startswith;
    content:"|22|"; endswith;
    http.header_names;
    content:!"Referer|0d 0a|";
    reference:md5,787ebc17ec47acb30b69a4978717b4dc;
    reference:url,twitter.com/StopMalvertisin/status/1653317886289797120;
    classtype:trojan-activity;
    sid:2045613; rev:1;
    metadata:attack_target Client_Endpoint, created_at 2023_05_08, deployment Perimeter, malware_family Win32_KLBanker, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_05_08;
    target:src_ip;
)

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