""ET INFO Observed Honeytrace .io Honeytoken Domain (microsoft-files .link) in TLS SNI""

SID: 2052977

Revision: 1

Class Type: misc-activity

Metadata: affected_product Any, attack_target Client_and_Server, created_at 2024_05_29, deployment Perimeter, performance_impact Low, confidence High, signature_severity Informational, updated_at 2024_05_29

Reference:

• Link

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: "microsoft-files.link"

Within: 1

PCRE: "/^(?:\x00\x14|.\x2e)microsoft-files.link/R"

Special Options:

source