""ET INFO DNS Over HTTPS Certificate Inbound (unfiltered .adguard-dns .com)""
SID: 2045825
Revision: 1
Class Type: misc-activity
Metadata: attack_target Client_Endpoint, created_at 2023_05_23, deployment Perimeter, signature_severity Informational, updated_at 2023_05_23
Reference:
Protocol: tcp
Source Network: $EXTERNAL_NET
Source Port: 443
Destination Network: $HOME_NET
Destination Port: any
Flow: established,to_client
Contents:
-
Value: "|16|"
-
Value: "|0b|"
-
Value: "|06 03 55 04 03|"
-
Value: "unfiltered.adguard-dns.com"
Within: 8
PCRE: "/^(?:\x1a|\x2e)unfiltered.adguard-dns.com/R"
Special Options: