ET FILE_SHARING Observed File Sharing Domain (drive .protonmail .com in TLS SNI)
Sourceet/open
Fileemerging-file_sharing.rules
CreatedApril 25, 2022
UpdatedJune 14, 2024
Classificationbad-unknown
alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET FILE_SHARING Observed File Sharing Domain (drive .protonmail .com in TLS SNI)"; flow:established,to_server ; tls.sni; bsize:20; content:"drive.protonmail.com"; fast_pattern; classtype:bad-unknown; sid:2036352; rev:3; metadata:attack_target Client_Endpoint, created_at 2022_04_25, deployment Perimeter, former_category INFO, confidence High, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_06_14;)
Metadata
attack targetClient_Endpoint
created at2022_04_25
deploymentPerimeter
former categoryINFO
confidenceHigh
signature severityInformational
tagDescription_Generated_By_Proofpoint_Nexus
updated at2024_06_14
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