""ET INFO Observed DNS Over HTTPS Domain (1a .ns .ozer .im in TLS SNI)""
SID: 2049061
Revision: 1
Class Type: misc-activity
Metadata: attack_target Client_Endpoint, created_at 2023_11_03, deployment Perimeter, former_category INFO, performance_impact Low, confidence Medium, signature_severity Informational, updated_at 2023_11_03, reviewed_at 2023_12_04
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|1a.ns.ozer.im"
Within: 8
PCRE:
Special Options:
- fast_pattern