""ET INFO Observed DNS over HTTPS Domain (dns4me .net) in TLS SNI""
SID: 2052673
Revision: 2
Class Type: misc-activity
Metadata: attack_target Client_and_Server, tls_state TLSEncrypt, created_at 2024_05_16, deployment Perimeter, performance_impact Low, confidence High, signature_severity Informational, tag DNS_over_HTTPS, updated_at 2024_05_17
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 0f|"
-
Value: ".dns4me.net"
Within: 11
PCRE: "/^[a-z]{2}\d{2}/R"
Special Options:
- fast_pattern