""ET TROJAN BluStealer - SysInfo Exfil via Telegram M2""

SID: 2037261

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 2022_07_05, deployment Perimeter, deployment SSLDecrypt, malware_family BluStealer, performance_impact Low, signature_severity Major, updated_at 2022_09_20, reviewed_at 2024_07_09

Reference:

Protocol: tcp

Source Network: $HOME_NET

Source Port: any

Destination Network: $EXTERNAL_NET

Destination Port: any

Flow: established,to_server

Contents:

  • Value: "POST"

  • Value: "/bot" Depth: 4

  • Value: "/sendMessage"

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

  • Value: "text=Passwords|3a 3a 3a|" Depth: 17

  • Value: "Username|3a 20|"

  • Value: "CompName|3a 20|"

  • Value: "Windows Version|3a 20|"

  • Value: "&chat_id="

  • Value: !"Referer|3a 20|"

Within:

PCRE:

Special Options:

  • http_method

  • http_uri

  • http_uri

  • http_header

  • fast_pattern

  • http_client_body

  • http_client_body

  • http_client_body

  • http_client_body

  • http_client_body

  • http_header

source