ET WEB_CLIENT PWNJS JS Constructs

Query · suricata

flow:established,from_server;
file_data;
content:"base_lo";
content:"base_hi";
content:"fake_object"; fast_pattern;
pcre:"/^\s*?\[\s*?\d/Rs";
content:"i32";
pcre:"/^\s*?\[\s*?\d/Rs";
content:"f64";
pcre:"/^\s*?\[\s*?\d/Rs";
content:"array_addr";
Raw source ET WEB_CLIENT PWNJS JS Constructs · 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 PWNJS JS Constructs";
    flow:established,from_server;
    file_data;
    content:"base_lo";
    content:"base_hi";
    content:"fake_object"; fast_pattern;
    pcre:"/^\s*?\[\s*?\d/Rs";
    content:"i32";
    pcre:"/^\s*?\[\s*?\d/Rs";
    content:"f64";
    pcre:"/^\s*?\[\s*?\d/Rs";
    content:"array_addr";
    reference:url,raw.githubusercontent.com/theori-io/pwnjs/;
    classtype:attempted-user;
    sid:2024994; rev:1;
    metadata:affected_product Web_Browsers, attack_target Client_Endpoint, created_at 2017_11_15, deployment Perimeter, performance_impact Moderate, signature_severity Major, updated_at 2019_07_26;
)

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