ET INFO Observed Blockchain Domain (api .blockcypher .com in TLS SNI)
Sourceet/open
CreatedSeptember 2, 2021
UpdatedSeptember 2, 2021
Classificationbad-unknown
alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET INFO Observed Blockchain Domain (api .blockcypher .com in TLS SNI)"; flow:established,to_server; tls.sni; content:"api.blockcypher.com"; bsize:19; fast_pattern; classtype:bad-unknown; sid:2033877; rev:1; metadata:attack_target Client_Endpoint, created_at 2021_09_02, deployment Perimeter, confidence High, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_09_02;)
Metadata
attack targetClient_Endpoint
created at2021_09_02
deploymentPerimeter
confidenceHigh
signature severityInformational
tagDescription_Generated_By_Proofpoint_Nexus
updated at2021_09_02
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