General

  • Target

    a89fb7ae5ad152e445320707a6231c70N.exe

  • Size

    280KB

  • Sample

    240727-jc3jaaxcrc

  • MD5

    a89fb7ae5ad152e445320707a6231c70

  • SHA1

    97cb0b65073b3388640be176b860ad8dadf204e7

  • SHA256

    d47b87ec90d7293ffef7b7c7f18fb246c8111e81ea33f2a9349ab320c27e6391

  • SHA512

    fc5c82992dfc102d918c82d794e75f481bf1dfdc3b46b346ee04698dbc9f56c1b94b7dd83e299b97388e4f18fb60810a2b12dadd358f38a2358f13951fdab247

  • SSDEEP

    6144:boy5p178U0MURaGyNXYWQzHazRfXrwSRnWwhrQ66fKk:boSeGUA5YZazpXUmZhZ6Sk

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

sysupdate24.ddns.net:45400

Mutex

ae82ab7f-db07-49ee-9d2b-76075d76f37f

Attributes
  • activate_away_mode

    true

  • backup_connection_host

  • backup_dns_server

  • buffer_size

    65535

  • build_time

    2020-04-24T17:41:53.492468936Z

  • bypass_user_account_control

    true

  • bypass_user_account_control_data

  • clear_access_control

    true

  • clear_zone_identifier

    false

  • connect_delay

    4000

  • connection_port

    45400

  • 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

    1.048576e+07

  • mutex

    ae82ab7f-db07-49ee-9d2b-76075d76f37f

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    sysupdate24.ddns.net

  • primary_dns_server

  • request_elevation

    true

  • restart_delay

    5000

  • run_delay

    0

  • run_on_startup

    true

  • set_critical_process

    true

  • timeout_interval

    5000

  • use_custom_dns_server

    false

  • version

    1.2.2.0

  • wan_timeout

    8000

Targets

    • Target

      a89fb7ae5ad152e445320707a6231c70N.exe

    • Size

      280KB

    • MD5

      a89fb7ae5ad152e445320707a6231c70

    • SHA1

      97cb0b65073b3388640be176b860ad8dadf204e7

    • SHA256

      d47b87ec90d7293ffef7b7c7f18fb246c8111e81ea33f2a9349ab320c27e6391

    • SHA512

      fc5c82992dfc102d918c82d794e75f481bf1dfdc3b46b346ee04698dbc9f56c1b94b7dd83e299b97388e4f18fb60810a2b12dadd358f38a2358f13951fdab247

    • SSDEEP

      6144:boy5p178U0MURaGyNXYWQzHazRfXrwSRnWwhrQ66fKk:boSeGUA5YZazpXUmZhZ6Sk

    • NanoCore

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

    • Checks computer location settings

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

    • Executes dropped EXE

    • Loads dropped DLL

    • Adds Run key to start application

    • Checks whether UAC is enabled

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks