General

  • Target

    87225db143a3c5bef68d42ae4fbbdf40N.exe

  • Size

    281KB

  • Sample

    240806-kwpbfayfnb

  • MD5

    87225db143a3c5bef68d42ae4fbbdf40

  • SHA1

    0729df47a4f205632005d27fd8655031b86bc571

  • SHA256

    a51c6f9b3e3e74a89aff54e5f6b68995db00f4c88701a2bbd29331a23c05afc8

  • SHA512

    734493929ee4d25a1090cc0bea6e0e6dbb8331f57a9ae3dd6cdebfa4c23b31a7ce2466dd086773527a326666c7fa94f52c868c491492a49e73ba3dd5e3cdf06a

  • SSDEEP

    6144:boy5p178U0MURaGyNXYWQzHazRfXrwSRnWwhrQ66fKkfe:boSeGUA5YZazpXUmZhZ6SD

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

      87225db143a3c5bef68d42ae4fbbdf40N.exe

    • Size

      281KB

    • MD5

      87225db143a3c5bef68d42ae4fbbdf40

    • SHA1

      0729df47a4f205632005d27fd8655031b86bc571

    • SHA256

      a51c6f9b3e3e74a89aff54e5f6b68995db00f4c88701a2bbd29331a23c05afc8

    • SHA512

      734493929ee4d25a1090cc0bea6e0e6dbb8331f57a9ae3dd6cdebfa4c23b31a7ce2466dd086773527a326666c7fa94f52c868c491492a49e73ba3dd5e3cdf06a

    • SSDEEP

      6144:boy5p178U0MURaGyNXYWQzHazRfXrwSRnWwhrQ66fKkfe:boSeGUA5YZazpXUmZhZ6SD

    • 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