""ET INFO DNS Over HTTPS Certificate Inbound (cnnic-chinatelecom-chinamobile-chinaunicom--bili-d .dahi .icu)""

SID: 2045823

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: "cnnic-chinatelecom-chinamobile-chinaunicom--bili-d.dahi.icu"

Within: 8

PCRE: "/^(?:\x3b|\x2e)cnnic-chinatelecom-chinamobile-chinaunicom--bili-d.dahi.icu/R"

Special Options:

source