ET MALWARE Malicious Chrome Extension Click Fraud Activity via Websocket

Query · suricata

flow:established,to_client;
content:"|7b 22|id|22 3a|"; within:10;
content:"|2c 22|data|22 3a 7b 22|method|22 3a 22|GET|22 2c 22|url|22 3a 22|"; distance:0;
content:"|22 2c 22|headers|22 3a 7b 22|"; distance:0;
content:"|2c 22|timeout|22 3a|30000|2c 22|body|22 3a 22|"; distance:0; fast_pattern;
threshold:type both, track by_dst, count 1, seconds 120;
Raw source ET MALWARE Malicious Chrome Extension Click Fraud Activity via Websocket · 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 MALWARE Malicious Chrome Extension Click Fraud Activity via Websocket";
    flow:established,to_client;
    content:"|7b 22|id|22 3a|"; within:10;
    content:"|2c 22|data|22 3a 7b 22|method|22 3a 22|GET|22 2c 22|url|22 3a 22|"; distance:0;
    content:"|22 2c 22|headers|22 3a 7b 22|"; distance:0;
    content:"|2c 22|timeout|22 3a|30000|2c 22|body|22 3a 22|"; distance:0; fast_pattern;
    threshold:type both, track by_dst, count 1, seconds 120;
    reference:url,www.icebrg.io/index.php?p=blog/malicious-chrome-extensions-enable-criminals-to-impact-over-half-a-million-users-and-global-businesses;
    reference:url,www.icebrg.io/blog/more-extensions-more-money-more-problems;
    classtype:trojan-activity;
    sid:2025221; rev:3;
    metadata:affected_product Any, attack_target Client_Endpoint, created_at 2018_01_18, deployment Perimeter, performance_impact Moderate, confidence High, signature_severity Major, updated_at 2019_07_26;
)

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