ET MALWARE Win32/Filecoder.STOP Variant Public Key Download

Query · suricata

flow:established,to_client;
http.stat_code;
content:"200";
http.response_body;
content:"|7b 22|public_key|22 3a 22|-----BEGIN|26 23 31 36 30 3b|PUBLIC|26 23 31 36 30 3b|KEY-----"; depth:51; fast_pattern;
content:"-----END|26 23 31 36 30 3b|PUBLIC|26 23 31 36 30 3b|KEY-----";
content:"|22 2c 22|id|22 3a 22|"; within:12;
Raw source ET MALWARE Win32/Filecoder.STOP Variant Public Key Download · 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 $EXTERNAL_NET any -> $HOME_NET any (
    msg:"ET MALWARE Win32/Filecoder.STOP Variant Public Key Download";
    flow:established,to_client;
    http.stat_code;
    content:"200";
    http.response_body;
    content:"|7b 22|public_key|22 3a 22|-----BEGIN|26 23 31 36 30 3b|PUBLIC|26 23 31 36 30 3b|KEY-----"; depth:51; fast_pattern;
    content:"-----END|26 23 31 36 30 3b|PUBLIC|26 23 31 36 30 3b|KEY-----";
    content:"|22 2c 22|id|22 3a 22|"; within:12;
    reference:md5,13f04ff944fa65eddd3e911740837a8a;
    reference:md5,c0672f0359afba1c24ab0f90f568bdc0;
    classtype:trojan-activity;
    sid:2036335; rev:4;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2019_09_12, deployment Perimeter, malware_family Win32_Filecoder_STOP, performance_impact Low, confidence Medium, signature_severity Major, updated_at 2020_11_19;
)

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