ET WEB_CLIENT Tech Support Scam Landing 2018-07-18

Query · suricata

flow:established,to_client;
http.stat_code;
content:"401";
http.header;
content:"WWW-Authenticate|3a 20|Basic realm=|22|Microsoft has detected suspicious activity"; fast_pattern;
Raw source ET WEB_CLIENT Tech Support Scam Landing 2018-07-18 · 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 Scam Landing 2018-07-18";
    flow:established,to_client;
    http.stat_code;
    content:"401";
    http.header;
    content:"WWW-Authenticate|3a 20|Basic realm=|22|Microsoft has detected suspicious activity"; fast_pattern;
    classtype:social-engineering;
    sid:2025831; rev:3;
    metadata:affected_product Web_Browsers, attack_target Client_Endpoint, created_at 2018_07_18, deployment Perimeter, confidence High, signature_severity Major, tag Tech_Support_Scam, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_09_01;
)

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