ET INFO HTTP Request for External IP Check (ip-addr .es)

Query · suricata

flow:established,to_server;
http.method;
content:"GET";
http.host;
content:"ip-addr.es";
pcre:"/^(?:\x3a\d{1,5})?$/R";
Raw source ET INFO HTTP Request for External IP Check (ip-addr .es) · 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 -> $EXTERNAL_NET any (
    msg:"ET INFO HTTP Request for External IP Check (ip-addr .es)";
    flow:established,to_server;
    http.method;
    content:"GET";
    http.host;
    content:"ip-addr.es";
    pcre:"/^(?:\x3a\d{1,5})?$/R";
    reference:url,blogs.cisco.com/security/talos/cryptowall-2;
    classtype:external-ip-check;
    sid:2020105; rev:5;
    metadata:attack_target Client_Endpoint, created_at 2015_01_07, deployment Perimeter, deployment SSLDecrypt, performance_impact Low, confidence High, signature_severity Informational, updated_at 2023_05_22;
)

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