""ET INFO HTTP Request to a *.top domain""

SID: 2023882

Revision: 2

Class Type: bad-unknown

Metadata: affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2017_02_07, deployment Perimeter, signature_severity Informational, updated_at 2022_11_21

Reference:

Protocol: tcp

Source Network: $HOME_NET

Source Port: any

Destination Network: $EXTERNAL_NET

Destination Port: $HTTP_PORTS

Flow: to_server,established

Contents:

  • Value: ".top"

  • Value: "|0d 0a|"

Within: 8

PCRE: "/^Host\x3a[^\r\n]+?.top(\x3a\d{1,5})?\r$/Hmi"

Special Options:

  • nocase

  • fast_pattern

  • http_header

  • http_header

source