General

  • Target
    https://wetransfer.com/downloads/15f451dc9e5d1d9c74f27f15d720eb1620260628175407/4cfb1d?t_exp=1782928447&t_lsid=fcaddb86-4c46-4404-b859-4e914e080f1d&t_network=link&t_rid=ZW1haWx8Njc2ODBiZjgzYjQ1MTBjYmM4ZTVlZjQ4&t_s=download_link&t_ts=1782669260
  • Sample260628-xb16qact3q

Malware Config

Extracted

Family
  • nanocore

Version
  • 1.2.2.0

C2
  • luttydin.ddns.net:54984

  • 127.0.0.1:54984

Mutex
  • 2974511b-85f7-4b21-b22c-93c684040308

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    127.0.0.1

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2026-04-09T19:33:14.816109936Z

  • bypass_user_account_control

    true

  • bypass_user_account_control_data

  • clear_access_control

    true

  • clear_zone_identifier

    false

  • connect_delay

    3997

  • connection_port

    54984

  • default_group

    Default

  • enable_debug_mode

    true

  • gc_threshold

    1.048576e+07

  • keep_alive_timeout

    30000

  • keyboard_logging

    false

  • lan_timeout

    2500

  • max_packet_size

    1.0485781e+07

  • mutex

    2974511b-85f7-4b21-b22c-93c684040308

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    luttydin.ddns.net

  • primary_dns_server

    8.8.8.8

  • request_elevation

    true

  • restart_delay

    5000

  • run_delay

    0

  • run_on_startup

    false

  • set_critical_process

    true

  • timeout_interval

    5000

  • use_custom_dns_server

    false

  • version

    1.2.2.0

  • wan_timeout

    8000

Targets

    • Target
      https://wetransfer.com/downloads/15f451dc9e5d1d9c74f27f15d720eb1620260628175407/4cfb1d?t_exp=1782928447&t_lsid=fcaddb86-4c46-4404-b859-4e914e080f1d&t_network=link&t_rid=ZW1haWx8Njc2ODBiZjgzYjQ1MTBjYmM4ZTVlZjQ4&t_s=download_link&t_ts=1782669260
    • Family: NanoCore

      NanoCore is a remote access tool (RAT) with a variety of capabilities.

    • Boot or Logon Autostart Execution: Active Setup

      Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.

    • Downloads MZ/PE file

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Executes dropped EXE

    • Adds Run key to start application

    • Checks whether UAC is enabled

MITRE ATT&CK Enterprise v16

Tasks