ET HUNTING Suspicious POST Request with Possible COVID-19 Domain M1

Query · suricata

http.method;
content:"POST";
http.host;
content:"covid";
content:!".jhu.edu"; endswith;
content:!".ncsc.gov.ie"; endswith;
content:!".nhs.wales"; endswith;
content:!".govt.nz"; endswith;
content:!".nhp.gov.in"; endswith;
content:!".oracle.com"; endswith;
content:!".cdc.gov"; endswith;
Raw source ET HUNTING Suspicious POST Request with Possible COVID-19 Domain M1 · 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 HUNTING Suspicious POST Request with Possible COVID-19 Domain M1";
    http.method;
    content:"POST";
    http.host;
    content:"covid";
    content:!".jhu.edu"; endswith;
    content:!".ncsc.gov.ie"; endswith;
    content:!".nhs.wales"; endswith;
    content:!".govt.nz"; endswith;
    content:!".nhp.gov.in"; endswith;
    content:!".oracle.com"; endswith;
    content:!".cdc.gov"; endswith;
    classtype:bad-unknown;
    sid:2029713; rev:3;
    metadata:affected_product Web_Browsers, attack_target Client_Endpoint, created_at 2020_03_23, deployment Perimeter, confidence Medium, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_11_11;
)

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