""ET TROJAN Win32/Vector Stealer Sending System Information via Telegram (POST)""

SID: 2044527

Revision: 2

Class Type: trojan-activity

Metadata: attack_target Client_Endpoint, created_at 2023_03_08, deployment Perimeter, deployment SSLDecrypt, malware_family VectorStealer, confidence High, signature_severity Major, updated_at 2023_03_26, reviewed_at 2023_11_28

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

  • Value: "Content|2d|Disposition|3a 20|form|2d|data|3b 20|name|3d|document|3b 20|filename|3d|"

  • Value: "|2d|dump|2e|txt|0d 0a 0d 0a|Username|3a 20|"

  • Value: "|0d 0a|Machine Name|3a 20|"

  • Value: "|0d 0a|OS|3a 20|"

  • Value: "|0d 0a|Bits|3a 20|"

  • Value: "|20|Bit|0d 0a|Antivirus|28|s|29 20|active|3a 20|"

Within: 27

PCRE:

Special Options:

  • http_method

  • http_uri

  • http_header

  • http_client_body

  • http_client_body

  • http_client_body

  • http_client_body

  • http_client_body

  • http_client_body

  • fast_pattern

source