ET INFO Observed DNS Query to File Sharing Domain (cdnfront .site)
Sourceet/open
Fileemerging-info.rules
CreatedSeptember 2, 2026
UpdatedSeptember 2, 2026
Classificationmisc-activity
alert dns $HOME_NET any -> any any (msg:"ET INFO Observed DNS Query to File Sharing Domain (cdnfront .site)"; dns.query; dotprefix; content:".cdnfront.site"; nocase; endswith; classtype:misc-activity; sid:2071895; rev:1; metadata:attack_target Client_Endpoint, created_at 2026_09_02, deployment Perimeter, confidence High, signature_severity Informational, 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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