ET MALWARE Win32/Krypton Stealer CnC Checkin

Query · suricata

flow:established,to_server;
http.method;
content:"POST";
http.uri;
content:".php"; endswith;
http.user_agent;
content:"Client"; depth:6; endswith;
http.request_body;
content:"id="; depth:3;
content:"&message="; distance:0; fast_pattern;
Raw source ET MALWARE Win32/Krypton Stealer CnC Checkin · 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/Krypton Stealer CnC Checkin";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.uri;
    content:".php"; endswith;
    http.user_agent;
    content:"Client"; depth:6; endswith;
    http.request_body;
    content:"id="; depth:3;
    content:"&message="; distance:0; fast_pattern;
    reference:md5,825afad02d07063689b7b59e8cf46809;
    classtype:command-and-control;
    sid:2027313; rev:4;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, created_at 2019_05_03, deployment Perimeter, malware_family Krypton, performance_impact Low, confidence High, signature_severity Major, tag Stealer, updated_at 2020_09_17;
)

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