""ET INFO Suspicious Request for Doc to IP Address with Terse Headers""

SID: 2025162

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_12_21, deployment Perimeter, signature_severity Minor, updated_at 2017_12_21

Reference:

Protocol: tcp

Source Network: $HOME_NET

Source Port: any

Destination Network: $EXTERNAL_NET

Destination Port: $HTTP_PORTS

Flow: established,to_server

Contents:

  • Value: "GET"

  • Value: ".doc"

  • Value: !"Referer"

  • Value: !"Accept"

  • Value: !"User-Agent"

Within:

PCRE: "/^Host\x3a\x20(?:\d{1,3}.){3}\d{1,3}\r\nConnection\x3a\x20Keep-Alive\r\n$/Hi"

Special Options:

  • http_method

  • http_uri

  • http_header

  • http_header

  • http_header

source