""ET TROJAN Snake Keylogger CnC Exfil via Telegram""

SID: 2031604

Revision: 2

Class Type: trojan-activity

Metadata: affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2021_02_03, deployment Perimeter, malware_family Snake_Keylogger, signature_severity Major, updated_at 2021_02_03

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?chat_id="

  • Value: "telegram.org|0d 0a|"

  • Value: "PC Name|3a|"

  • Value: "Snake|20|Keylogger"

  • Value: "Snake|20|Keylogger"

  • Value: !"Referer|3a 20|"

  • Value: !"Accept"

  • Value: !"User-Agent|3a 20|"

Within:

PCRE: "/^Host\x3a\x20[^\r\n]+telegram.org/Hmi"

Special Options:

  • http_method

  • http_uri

  • http_header

  • http_client_body

  • fast_pattern

  • http_client_body

  • http_client_body

  • http_header

  • http_header

  • http_header

source