""ET TROJAN Suspected Kimsuky APT Related ToddlerShark Activity (POST)""

SID: 2051497

Revision: 1

Class Type: trojan-activity

Metadata: attack_target Client_Endpoint, tls_state plaintext, created_at 2024_03_06, deployment Perimeter, performance_impact Low, confidence Medium, signature_severity Major, updated_at 2024_03_06

Reference:

Protocol: tcp

Source Network: $HOME_NET

Source Port: any

Destination Network: $EXTERNAL_NET

Destination Port: $HTTP_PORTS

Flow: established,to_server

Contents:

  • Value: "POST"

  • Value: "/microsoft/search" Depth: 17

  • Value: "Content-Type|3a 20|application/x-www-form-urlencoded"

  • Value: !"Referer|3a 20|"

Within:

PCRE: "/^Host[^\r\n]+.000webhostapp.com\r\n/Hm"

Special Options:

  • http_method

  • fast_pattern

  • http_uri

  • http_header

source