""ET TROJAN Win32/Ducktail Exfil Via Telegram (POST)""

SID: 2045616

Revision: 1

Class Type: trojan-activity

Metadata: affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2023_05_08, deployment Perimeter, deployment SSLDecrypt, malware_family Ducktail, confidence High, signature_severity Major, updated_at 2023_05_09

Reference:

  • md5

  • d3ff692d6e816c72693d07f7b5bd4eca

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: "Host|3a 20|api.telegram.org|0d 0a|"

  • Value: "Content-Type|3a 20|application/json"

  • Value: "|7b 22|chat|5f|id|22 3a|" Depth: 11

  • Value: "|2c 22|text|22 3a 22|REQ|7c|"

  • Value: "|7c|HELLO|7c|0|22 2c 22|"

Within:

PCRE: "/^(?:[A-Z0-9]{8})-(?:[A-Z0-9]{4})-(?:[A-Z0-9]{4})-(?:[A-Z0-9]{4})-(?:[A-Z0-9]{12})/R"

Special Options:

  • http_method

  • http_header

  • http_header

  • http_client_body

  • fast_pattern

  • http_client_body

source