ET INFO Observed External IP Lookup Domain Domain (api .country .is in TLS SNI)
Sourceet/open
CreatedMarch 25, 2025
UpdatedMarch 25, 2025
Classificationexternal-ip-check
alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET INFO Observed External IP Lookup Domain Domain (api .country .is in TLS SNI)"; flow:established,to_server; tls.sni; bsize:14; content:"api.country.is"; fast_pattern; classtype:external-ip-check; sid:2061044; rev:1; metadata:attack_target Client_Endpoint, created_at 2025_03_25, deployment Perimeter, confidence High, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2025_03_25;)
Metadata
attack targetClient_Endpoint
created at2025_03_25
deploymentPerimeter
confidenceHigh
signature severityInformational
tagDescription_Generated_By_Proofpoint_Nexus
updated at2025_03_25
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