""ET INFO Document Sharing Site Domain Observed in TLS SNI (docsend .com)""

SID: 2052527

Revision: 1

Class Type: misc-activity

Metadata: affected_product Any, attack_target Client_Endpoint, created_at 2024_05_09, deployment Perimeter, performance_impact Low, confidence High, signature_severity Informational, updated_at 2024_05_09

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: "docsend.com"

Within: 1

PCRE: "/^(?:\x00\x0b|.\x2e)docsend.com/R"

Special Options:

source