ET MALWARE Zeus POST Request to CnC sk1 and bn1 post parameters

Query · suricata

flow:established,to_server;
http.method;
content:"POST"; nocase;
http.request_body;
content:"bn1="; depth:4; fast_pattern;
content:"&sk1=";
pcre:"/^[A-F0-9]{30}/R";
Raw source ET MALWARE Zeus POST Request to CnC sk1 and bn1 post parameters · 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 Zeus POST Request to CnC sk1 and bn1 post parameters";
    flow:established,to_server;
    http.method;
    content:"POST"; nocase;
    http.request_body;
    content:"bn1="; depth:4; fast_pattern;
    content:"&sk1=";
    pcre:"/^[A-F0-9]{30}/R";
    classtype:command-and-control;
    sid:2014218; rev:7;
    metadata:created_at 2012_02_10, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_08_18;
)

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