ET INFO Observed Infrastructure as a Service Domain (railway .app in TLS SNI)
Sourceet/open
CreatedDecember 16, 2025
UpdatedDecember 16, 2025
Classificationmisc-activity
alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET INFO Observed Infrastructure as a Service Domain (railway .app in TLS SNI)"; flow:established,to_server; tls.sni; dotprefix; content:".railway.app"; endswith; fast_pattern; reference:url,railway.com/about; classtype:misc-activity; sid:2066347; rev:1; metadata:attack_target Client_Endpoint, created_at 2025_12_16, deployment Perimeter, performance_impact Low, confidence High, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2025_12_16;)
References
Metadata
attack targetClient_Endpoint
created at2025_12_16
deploymentPerimeter
performance impactLow
confidenceHigh
signature severityInformational
tagDescription_Generated_By_Proofpoint_Nexus
updated at2025_12_16
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