""ET INFO Request for PDF via PowerShell""

SID: 2044024

Revision: 1

Class Type: misc-activity

Metadata: attack_target Client_Endpoint, created_at 2023_01_30, deployment Perimeter, performance_impact Moderate, signature_severity Informational, updated_at 2023_01_30

Reference:

  • md5

  • 544a65bfe51385bb148f23a4e3f140d6

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: ".pdf"

  • Value: "WindowsPowerShell/"

Within:

PCRE: "/^User-Agent\x3a\x20[^\r\n]+WindowsPowerShell\//Hmi"

Special Options:

  • http_method

  • http_uri

  • http_header

  • fast_pattern

source