""ET TROJAN Win32/Steallerium Stealer Data Exfil via Telegram (POST)""

SID: 2047813

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_08_29, deployment Perimeter, deployment SSLDecrypt, confidence High, signature_severity Critical, updated_at 2023_08_29

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: "/bot" Depth: 4

  • Value: "|2f|sendDocument|3f|chat|5f|id"

  • Value: "&caption=|f0 9f 94 94|New|20|Log|20|From|3a 20|"

  • Value: "|f0 9f 94 90|Password|3a 20|"

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

Within:

PCRE:

Special Options:

  • http_method

  • http_uri

  • http_uri

  • http_uri

  • fast_pattern

  • http_uri

  • http_header

source