ET ADWARE_PUP Win32/BrowseFox.H Checkin 2

Query · suricata

flow:established,to_server;
urilen:3;
http.method;
content:"POST";
http.uri;
content:"/rs";
http.request_body;
content:"alpha="; fast_pattern;
pcre:"/^(?:[A-Za-z0-9+/]{4})*(?:[A-Za-z0-9+/]{2}==|[A-Za-z0-9+/]{3}=|[A-Za-z0-9+/]{4})$/R";
http.header_names;
content:!"User-Agent";
content:!"Accept";
content:!"Referer";
Raw source ET ADWARE_PUP Win32/BrowseFox.H Checkin 2 · 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 -> $EXTERNAL_NET any (
    msg:"ET ADWARE_PUP Win32/BrowseFox.H Checkin 2";
    flow:established,to_server;
    urilen:3;
    http.method;
    content:"POST";
    http.uri;
    content:"/rs";
    http.request_body;
    content:"alpha="; fast_pattern;
    pcre:"/^(?:[A-Za-z0-9+/]{4})*(?:[A-Za-z0-9+/]{2}==|[A-Za-z0-9+/]{3}=|[A-Za-z0-9+/]{4})$/R";
    http.header_names;
    content:!"User-Agent";
    content:!"Accept";
    content:!"Referer";
    reference:md5,437a5cb57567c2691ce61a700682eab7;
    classtype:pup-activity;
    sid:2018899; rev:6;
    metadata:created_at 2014_07_29, signature_severity Minor, updated_at 2020_08_31;
)

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