""ET INFO Observed Abused File Sharing Service Domain (tempfiles .ninja in TLS SNI)""

SID: 2055404

Revision: 1

Class Type: misc-activity

Metadata: attack_target Client_Endpoint, created_at 2024_08_22, deployment Perimeter, signature_severity Informational, tag TA_Abused_Service, updated_at 2024_08_22

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: "tempfiles.ninja"

Within: 1

PCRE: "/^(?:\x00\x0f|.\x2e)tempfiles.ninja/R"

Special Options:

source