ET ADWARE_PUP LNKR Possible Response for LNKR js file

Query · suricata

flow:established,from_server;
http.stat_code;
content:"200";
http.content_type;
content:"application/javascript";
file.data;
content:"lnkr_redirecting"; fast_pattern;
content:"_lnkr";
content:"excludeDomains"; within:40;
content:"document.createElement|28 22|script|22|"; distance:0;
Raw source ET ADWARE_PUP LNKR Possible Response for LNKR js file · Suricata
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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 ADWARE_PUP LNKR Possible Response for LNKR js file";
    flow:established,from_server;
    http.stat_code;
    content:"200";
    http.content_type;
    content:"application/javascript";
    file.data;
    content:"lnkr_redirecting"; fast_pattern;
    content:"_lnkr";
    content:"excludeDomains"; within:40;
    content:"document.createElement|28 22|script|22|"; distance:0;
    reference:url,securitytrails.com/blog/lnkr-malicious-browser-extension;
    classtype:pup-activity;
    sid:2027424; rev:6;
    metadata:affected_product Web_Browsers, affected_product Web_Browser_Plugins, attack_target Client_Endpoint, created_at 2019_06_03, deployment Perimeter, performance_impact Low, confidence Medium, signature_severity Minor, updated_at 2020_11_19;
)

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