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General

  • Target

    119ff7865bd6961c5bbba298eefa8b922ac36236d0f1aa1b0aa3f2074928cad6

  • Size

    280KB

  • Sample

    250116-ywjylswrav

  • MD5

    7135199236838e9d6d9f57318c6cd1ff

  • SHA1

    6fc6e6579b9cd389b55b12730c39f50dbaea5bd9

  • SHA256

    119ff7865bd6961c5bbba298eefa8b922ac36236d0f1aa1b0aa3f2074928cad6

  • SHA512

    b1470abcced7fe1b7c81a87968c442f746675f0e363ae33f19628b52004969672c96a2cc8c9f66c967b90d0e1be5bfdbfb3d9c05ef2edc97498daf02bf32a701

  • SSDEEP

    6144:boy5p178U0MURaGyNXYWQzHazRfXrwSRnWwhrQ66fB:boSeGUA5YZazpXUmZhZ6J

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

      119ff7865bd6961c5bbba298eefa8b922ac36236d0f1aa1b0aa3f2074928cad6

    • Size

      280KB

    • MD5

      7135199236838e9d6d9f57318c6cd1ff

    • SHA1

      6fc6e6579b9cd389b55b12730c39f50dbaea5bd9

    • SHA256

      119ff7865bd6961c5bbba298eefa8b922ac36236d0f1aa1b0aa3f2074928cad6

    • SHA512

      b1470abcced7fe1b7c81a87968c442f746675f0e363ae33f19628b52004969672c96a2cc8c9f66c967b90d0e1be5bfdbfb3d9c05ef2edc97498daf02bf32a701

    • SSDEEP

      6144:boy5p178U0MURaGyNXYWQzHazRfXrwSRnWwhrQ66fB:boSeGUA5YZazpXUmZhZ6J

    • NanoCore

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

    • Nanocore family

    • 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