""ET TROJAN Win32/TyphonReborn Telegram CnC Checkin""

SID: 2039785

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_11_15, deployment Perimeter, deployment SSLDecrypt, performance_impact Low, confidence High, signature_severity Major, updated_at 2022_11_15

Reference:

Protocol: tcp

Source Network: $EXTERNAL_NET

Source Port: $HTTP_PORTS

Destination Network: $HOME_NET

Destination Port: any

Flow: established,to_client

Contents:

  • Value: "200"

  • Value: "|7b 22|ok|22 3a|true|2c 22|result|22 3a 7b 22|message_id|22 3a|"

  • Value: "|22|is_bot|22 3a|true|2c 22|first_name|22 3a 22|Typhon|22 2c|"

  • Value: "|22|username|22 3a 22|TyphonSyphonBot|22 7d 2c|"

  • Value: "New TyphonReborn log"

Within:

PCRE:

Special Options:

  • http_stat_code

  • file_data

  • fast_pattern

source