""ET INFO Observed URL Shortener Service Domain Domain (zii .to in TLS SNI)""

SID: 2038991

Revision: 1

Class Type: misc-activity

Metadata: affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2022_09_26, deployment Perimeter, signature_severity Informational, updated_at 2022_09_26

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|"

  • Value: "|00|"

  • Value: "zii.to"

Within: 1

PCRE: "/^(?:\x00\x06|.\x2e)zii.to/R"

Special Options:

source