ET INFO Observed Online Application Hosting Domain (clickhouse .cloud in TLS SNI)
Sourceet/open
CreatedMay 20, 2026
UpdatedMay 20, 2026
Classificationmisc-activity
alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET INFO Observed Online Application Hosting Domain (clickhouse .cloud in TLS SNI)"; flow:established,to_server; tls.sni; dotprefix; content:".clickhouse.cloud"; endswith; fast_pattern; classtype:misc-activity; sid:2069358; rev:1; metadata:affected_product Any, attack_target Client_and_Server, created_at 2026_05_20, deployment Perimeter, performance_impact Low, confidence High, signature_severity Informational, tag Hosting_Services, updated_at 2026_05_20, mitre_tactic_id TA0042, mitre_tactic_name Resource_Development, mitre_technique_id T1583, mitre_technique_name Acquire_Infrastructure;)
Metadata
affected productAny
attack targetClient_and_Server
created at2026_05_20
deploymentPerimeter
performance impactLow
confidenceHigh
signature severityInformational
tagHosting_Services
updated at2026_05_20
mitre tactic idTA0042
mitre tactic nameResource_Development
mitre technique idT1583
mitre technique nameAcquire_Infrastructure
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