ET INFO Observed External IP Check Domain (api .ipapi .com in TLS SNI)
Sourceet/open
CreatedAugust 7, 2023
UpdatedAugust 7, 2023
Classificationexternal-ip-check
alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET INFO Observed External IP Check Domain (api .ipapi .com in TLS SNI)"; flow:established,to_server; tls.sni; bsize:13; content:"api.ipapi.com"; fast_pattern; classtype:external-ip-check; sid:2047065; rev:1; metadata:attack_target Client_Endpoint, created_at 2023_08_07, deployment Perimeter, performance_impact Low, confidence High, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_08_07, reviewed_at 2024_03_05;)
Metadata
attack targetClient_Endpoint
created at2023_08_07
deploymentPerimeter
performance impactLow
confidenceHigh
signature severityInformational
tagDescription_Generated_By_Proofpoint_Nexus
updated at2023_08_07
reviewed at2024_03_05
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