ET WEB_CLIENT Tech Support Phone Scam Landing M1 Jan 20 2017

Query · suricata

flow:from_server,established;
http.stat_code;
content:"401";
http.header;
content:"WWW-Authenticate|3a 20|Basic realm=|22|"; nocase;
content:"Warning|3a|"; nocase; distance:0; fast_pattern;
content:"Call Microsoft"; nocase;
Raw source ET WEB_CLIENT Tech Support Phone Scam Landing M1 Jan 20 2017 · 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 Tech Support Phone Scam Landing M1 Jan 20 2017";
    flow:from_server,established;
    http.stat_code;
    content:"401";
    http.header;
    content:"WWW-Authenticate|3a 20|Basic realm=|22|"; nocase;
    content:"Warning|3a|"; nocase; distance:0; fast_pattern;
    content:"Call Microsoft"; nocase;
    classtype:social-engineering;
    sid:2023751; rev:3;
    metadata:affected_product Web_Browsers, attack_target Client_Endpoint, created_at 2017_01_20, deployment Perimeter, confidence High, signature_severity Major, tag Phishing, updated_at 2020_08_03;
)

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