""ET TROJAN Powershell Octopus Backdoor Activity (POST)""

SID: 2034939

Revision: 1

Class Type: trojan-activity

Metadata: attack_target Client_Endpoint, created_at 2022_01_19, deployment Perimeter, signature_severity Major, updated_at 2022_01_19

Reference:

Protocol: tcp

Source Network: $HOME_NET

Source Port: any

Destination Network: $EXTERNAL_NET

Destination Port: $HTTP_PORTS

Flow: established,to_server

Contents:

  • Value: "token=" Depth: 6

  • Value: "&Category="

  • Value: "POST /publish HTTP/1.1"

  • Value: !"Referer|3a 20|"

Within:

PCRE:

Special Options:

  • http_client_body

  • http_client_body

  • fast_pattern

  • http_header

source