ET INFO Observed DNS over HTTPS Domain in TLS SNI (adguard .ddns .network)
Sourceet/open
CreatedMay 4, 2023
UpdatedDecember 1, 2024
Classificationmisc-activity
alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET INFO Observed DNS over HTTPS Domain in TLS SNI (adguard .ddns .network)"; flow:established,to_server; tls.sni; content:"adguard.ddns.network"; bsize:20; fast_pattern; classtype:misc-activity; sid:2045600; rev:3; metadata:affected_product Any, created_at 2023_05_04, deployment Perimeter, performance_impact Low, confidence High, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_12_01, reviewed_at 2024_10_01, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1572, mitre_technique_name Protocol_Tunneling;)
Metadata
affected productAny
created at2023_05_04
deploymentPerimeter
performance impactLow
confidenceHigh
signature severityInformational
tagDescription_Generated_By_Proofpoint_Nexus
updated at2024_12_01
reviewed at2024_10_01
mitre tactic idTA0011
mitre tactic nameCommand_And_Control
mitre technique idT1572
mitre technique nameProtocol_Tunneling
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