""ET INFO Observed DNS over HTTPS Domain in TLS SNI (cluster-1 .gac .edu)""
SID: 2048518
Revision: 1
Class Type: misc-activity
Metadata: affected_product Any, attack_target Client_Endpoint, created_at 2023_10_10, deployment Perimeter, malware_family DoH, performance_impact Low, confidence High, signature_severity Informational, updated_at 2023_10_10, reviewed_at 2023_10_10
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 11|cluster-1.gac.edu"
Within: 8
PCRE:
Special Options:
- fast_pattern