ET FILE_SHARING Observed File Sharing Domain in TLS SNI (filelu .live)
Sourceet/open
Fileemerging-file_sharing.rules
CreatedSeptember 2, 2026
UpdatedSeptember 2, 2026
Classificationmisc-activity
alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET FILE_SHARING Observed File Sharing Domain in TLS SNI (filelu .live)"; flow:established,to_server ; tls.sni; dotprefix; content:".filelu.live"; endswith; fast_pattern; classtype:misc-activity; sid:2071892; rev:1; metadata:attack_target Client_Endpoint, created_at 2026_09_02, deployment Perimeter, confidence High, signature_severity Informational, tag SSL_Malicious_Cert, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2026_09_02;)
Metadata
attack targetClient_Endpoint
created at2026_09_02
deploymentPerimeter
confidenceHigh
signature severityInformational
tagDescription_Generated_By_Proofpoint_Nexus
updated at2026_09_02
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