ET WEB_CLIENT Multibrowser Resource Exhaustion observed in Tech Support Scam

Query · suricata

flow:from_server,established;
file_data;
content:"var|20|total|20|=|20 22 22 3b|"; nocase;
content:"total|20|=|20|total"; nocase; distance:0;
content:"history.pushState"; nocase; fast_pattern; distance:0;
pcre:"/^\s*\(\s*0\s*,\s*0\s*,\s*total\s*\)/Ri";
Raw source ET WEB_CLIENT Multibrowser Resource Exhaustion observed in Tech Support Scam · Suricata
Esc
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 WEB_CLIENT Multibrowser Resource Exhaustion observed in Tech Support Scam";
    flow:from_server,established;
    file_data;
    content:"var|20|total|20|=|20 22 22 3b|"; nocase;
    content:"total|20|=|20|total"; nocase; distance:0;
    content:"history.pushState"; nocase; fast_pattern; distance:0;
    pcre:"/^\s*\(\s*0\s*,\s*0\s*,\s*total\s*\)/Ri";
    reference:url,bugzilla.mozilla.org/show_bug.cgi?id=1246773;
    classtype:social-engineering;
    sid:2024305; rev:3;
    metadata:affected_product Web_Browsers, attack_target Client_Endpoint, created_at 2017_05_16, deployment Perimeter, confidence Medium, signature_severity Major, updated_at 2019_08_16;
)

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