ET FILE_SHARING Observed URL Shortening/File Sharing Service Domain (d .pr in TLS SNI)
Sourceet/open
Fileemerging-file_sharing.rules
CreatedFebruary 1, 2024
UpdatedJune 14, 2024
Classificationmisc-activity
alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET FILE_SHARING Observed URL Shortening/File Sharing Service Domain (d .pr in TLS SNI)"; flow:established,to_server ; tls.sni; bsize:4; content:"d.pr"; fast_pattern; classtype:misc-activity; sid:2050664; rev:2; metadata:attack_target Client_Endpoint, created_at 2024_02_01, deployment Perimeter, former_category INFO, performance_impact Low, confidence High, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_06_14, reviewed_at 2024_05_06;)
Metadata
attack targetClient_Endpoint
created at2024_02_01
deploymentPerimeter
former categoryINFO
performance impactLow
confidenceHigh
signature severityInformational
tagDescription_Generated_By_Proofpoint_Nexus
updated at2024_06_14
reviewed at2024_05_06
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