""ET TROJAN WhiteSnake Stealer Sending Data to Telegram (POST)""

SID: 2044309

Revision: 2

Class Type: trojan-activity

Metadata: attack_target Client_Endpoint, created_at 2023_02_23, deployment Perimeter, deployment SSLDecrypt, malware_family Gurcu, malware_family WhiteSnake, confidence High, signature_severity Major, updated_at 2023_05_26, reviewed_at 2023_11_28

Reference:

  • md5

  • 716d01d18140ec5e18b1a15c17fb213f

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: "/sendDocument?chat_id="

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

  • Value: "name=|22|document|22 3b|"

  • Value: "_report.wsr|22 0d 0a|Content-Type|3a 20|application/octet-stream|0d 0a 0d 0a|WSR"

Within:

PCRE:

Special Options:

  • http_method

  • http_uri

  • http_uri

  • http_header

  • http_client_body

  • http_client_body

  • fast_pattern

source