""ET INFO Observed DNS Over HTTPS Domain (dns .l337 .site) in TLS SNI""
SID: 2053213
Revision: 1
Class Type: misc-activity
Metadata: affected_product Any, attack_target Client_and_Server, created_at 2024_06_03, deployment Perimeter, performance_impact Low, confidence High, signature_severity Informational, tag DNS_over_HTTPS, updated_at 2024_06_03
Reference:
Protocol: tcp
Source Network: $HOME_NET
Source Port: any
Destination Network: $EXTERNAL_NET
Destination Port: 443
Flow: established,to_server
Contents:
-
Value: "|16|"
-
Value: "|01|"
-
Value: "|00 00 0d|dns.l337.site"
Within: 8
PCRE:
Special Options:
- fast_pattern