""ET INFO Observed Nighthawk 404 Server Response""

SID: 2043331

Revision: 1

Class Type: bad-unknown

Metadata: attack_target Client_Endpoint, created_at 2023_01_18, deployment Perimeter, deployment SSLDecrypt, signature_severity Informational, updated_at 2023_01_18

Reference:

Protocol: tcp

Source Network: $EXTERNAL_NET

Source Port: $HTTP_PORTS

Destination Network: $HOME_NET

Destination Port: any

Flow: established,to_client

Contents:

  • Value: "404"

  • Value: "X-Test|3a 20|2|0d 0a|"

  • Value: "Nothing to see here."

Within:

PCRE:

Special Options:

  • http_stat_code

  • fast_pattern

  • http_header

  • file_data

source