ET INFO Observed File Sharing Domain (drive .protonmail .com in TLS SNI)
Sourceet/open
CreatedApril 25, 2022
UpdatedApril 25, 2022
Classificationbad-unknown
alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET INFO Observed File Sharing Domain (drive .protonmail .com in TLS SNI)"; flow:established,to_server; tls.sni; content:"drive.protonmail.com"; bsize:20; fast_pattern; classtype:bad-unknown; sid:2036352; rev:1; metadata:attack_target Client_Endpoint, created_at 2022_04_25, deployment Perimeter, confidence High, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_04_25;)
Metadata
attack targetClient_Endpoint
created at2022_04_25
deploymentPerimeter
confidenceHigh
signature severityInformational
tagDescription_Generated_By_Proofpoint_Nexus
updated at2022_04_25
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