ET WEB_CLIENT Volexity - JS Sniffer Data Theft Beacon Detected

Query · suricata

flow:established,to_server;
http.method;
content:"GET";
http.uri;
content:".php?";
content:"=WyJ1cmw"; distance:0; fast_pattern;
Raw source ET WEB_CLIENT Volexity - JS Sniffer Data Theft Beacon Detected · 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 WEB_CLIENT Volexity - JS Sniffer Data Theft Beacon Detected";
    flow:established,to_server;
    http.method;
    content:"GET";
    http.uri;
    content:".php?";
    content:"=WyJ1cmw"; distance:0; fast_pattern;
    reference:url,www.volexity.com/blog/2018/07/19/js-sniffer-e-commerce-data-theft-made-easy/;
    classtype:trojan-activity;
    sid:2025880; rev:3;
    metadata:affected_product Web_Browsers, attack_target Client_Endpoint, created_at 2018_07_23, deployment Perimeter, signature_severity Major, tag Stealer, tag c2, updated_at 2020_08_25, mitre_tactic_id TA0010, mitre_tactic_name Exfiltration, mitre_technique_id T1041, mitre_technique_name Exfiltration_Over_C2_Channel;
)

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