ET MALWARE YAHOOYLO Stealer CnC Exfil

Query · suricata

flow:established,to_server;
http.method;
content:"POST";
http.uri;
content:".php"; endswith;
http.content_type;
content:"application/x-www-form-urlencoded";
http.request_body;
content:"|50 4b 03 04|"; startswith;
content:"Information.txt"; distance:0;
content:"=Hardware Info==========================|0d 0a|Username|3a 20|"; distance:0; fast_pattern;
Raw source ET MALWARE YAHOOYLO Stealer CnC Exfil · 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 YAHOOYLO Stealer CnC Exfil";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.uri;
    content:".php"; endswith;
    http.content_type;
    content:"application/x-www-form-urlencoded";
    http.request_body;
    content:"|50 4b 03 04|"; startswith;
    content:"Information.txt"; distance:0;
    content:"=Hardware Info==========================|0d 0a|Username|3a 20|"; distance:0; fast_pattern;
    reference:md5,437e3fb3c14f32644df9c6168ca4fa2c;
    classtype:command-and-control;
    sid:2030648; rev:1;
    metadata:attack_target Client_Endpoint, created_at 2020_08_05, deployment Perimeter, deployment SSLDecrypt, malware_family YAHOOYLO, performance_impact Low, confidence High, signature_severity Major, tag Stealer, updated_at 2020_08_05;
)

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