Versions (3)
Version DetailsCurrent
Rev: 4 • Jan 18, 2024, 12:00 PMET INFO Observed DNS Over HTTPS Domain (inde .ragnvindr .org in TLS SNI)
alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET INFO Observed DNS Over HTTPS Domain (inde .ragnvindr .org in TLS SNI)"; flow:established,to_server; tls.sni; bsize:18; content:"inde.ragnvindr.org"; fast_pattern; reference:url,github.com/curl/curl/wiki/DNS-over-HTTPS; classtype:misc-activity; sid:2050173; rev:4; metadata:created_at 2024_01_18, deployment Perimeter, performance_impact Low, confidence High, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_12_01, reviewed_at 2024_04_22, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1572, mitre_technique_name Protocol_Tunneling;)
Jan 18, 2024, 12:00 PM
Dec 1, 2024, 12:00 PM
Sep 21, 2024, 3:00 AM
Aug 15, 2025, 8:34 PM
rules/emerging-info.rules