ET MALWARE Win32.Raccoon Stealer Checkin Response M4

Query · suricata

flow:established,to_client;
file_data;
content:"2HVWm7UNyz"; startswith; fast_pattern;
pcre:"/^[a-zA-Z0-9+\/]+(?:[a-zA-Z0-9+\/]{2}==|[a-zA-Z0-9+\/]{3}=|[a-zA-Z0-9+\/]{4})$/";
Raw source ET MALWARE Win32.Raccoon Stealer Checkin Response M4 · 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 -> $HOME_NET any (
    msg:"ET MALWARE Win32.Raccoon Stealer Checkin Response M4";
    flow:established,to_client;
    file_data;
    content:"2HVWm7UNyz"; startswith; fast_pattern;
    pcre:"/^[a-zA-Z0-9+\/]+(?:[a-zA-Z0-9+\/]{2}==|[a-zA-Z0-9+\/]{3}=|[a-zA-Z0-9+\/]{4})$/";
    reference:md5,108757a3cc9c5e9d529ca1a94f1432b2;
    classtype:command-and-control;
    sid:2035178; rev:2;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2022_02_11, deployment Perimeter, deployment SSLDecrypt, malware_family Raccoon_Stealer, performance_impact Moderate, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_02_11;
)

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