ET HUNTING Google Adwords Conversion not from Google

Query · suricata

flow:established,to_server;
http.method;
content:"GET";
http.uri;
content:"/pagead/conversion_async.js"; endswith; fast_pattern;
http.host;
content:!"googleadservices.com";
content:!"doubleclick.net";
content:!"google.com";
Raw source ET HUNTING Google Adwords Conversion not from Google · 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 $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET HUNTING Google Adwords Conversion not from Google";
    flow:established,to_server;
    http.method;
    content:"GET";
    http.uri;
    content:"/pagead/conversion_async.js"; endswith; fast_pattern;
    http.host;
    content:!"googleadservices.com";
    content:!"doubleclick.net";
    content:!"google.com";
    classtype:bad-unknown;
    sid:2030980; rev:1;
    metadata:attack_target Client_Endpoint, created_at 2020_10_06, deployment Perimeter, deployment SSLDecrypt, performance_impact Moderate, confidence Medium, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_10_06;
)

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