ET INFO Observed Dynamic DNS Domain (dedyn .io in TLS SNI)
Sourceet/open
CreatedOctober 1, 2025
UpdatedOctober 1, 2025
Classificationmisc-activity
alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET INFO Observed Dynamic DNS Domain (dedyn .io in TLS SNI)"; flow:established,to_server; tls.sni; dotprefix; content:".dedyn.io"; endswith; fast_pattern; classtype:misc-activity; sid:2065031; rev:1; metadata:attack_target Client_Endpoint, created_at 2025_10_01, deployment Perimeter, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2025_10_01;)
Metadata
attack targetClient_Endpoint
created at2025_10_01
deploymentPerimeter
signature severityInformational
tagDescription_Generated_By_Proofpoint_Nexus
updated at2025_10_01
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