""ET TROJAN Elusive Stealer CnC Exfil via Telegram""

SID: 2051071

Revision: 1

Class Type: trojan-activity

Metadata: affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, tls_state TLSDecrypt, created_at 2024_02_22, deployment Perimeter, deployment SSLDecrypt, confidence High, signature_severity Critical, updated_at 2024_02_22

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: "/sendDocument"

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

  • Value: "name|3d 22|chat|5f|id|22 0d 0a|"

  • Value: "name|3d 22|caption|22 0d 0a|"

  • Value: "ElusiveReadme.txt"

Within:

PCRE: "/\/sendDocument$/U"

Special Options:

  • http_method

  • http_uri

  • http_header

  • http_client_body

  • http_client_body

  • http_client_body

  • fast_pattern

source