General

  • Target

    ebaec4e92caf82b8b290e9feda97ea49ff342fd278b6b057afd006b010e1ec18.exe

  • Size

    279KB

  • Sample

    241218-n8xp5ayren

  • MD5

    044e5c9bbbdf271a3bcd3a2de354b285

  • SHA1

    9eca6966dfab8a9fe31f7f1edb42d3b4ce093a22

  • SHA256

    ebaec4e92caf82b8b290e9feda97ea49ff342fd278b6b057afd006b010e1ec18

  • SHA512

    d9c67e966887a0b1f809b7f69563c1b0e376be2cd735fb336a76703e1e3e3430496ed81f4ba57a0b2ddad5229e2cfa6532834083b1611bca5535cb05f9edbbd2

  • SSDEEP

    6144:boy5p178U0MURaGyNXYWQzHazRfXrwSRnWwhrQ66fa:boSeGUA5YZazpXUmZhZ6S

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

      ebaec4e92caf82b8b290e9feda97ea49ff342fd278b6b057afd006b010e1ec18.exe

    • Size

      279KB

    • MD5

      044e5c9bbbdf271a3bcd3a2de354b285

    • SHA1

      9eca6966dfab8a9fe31f7f1edb42d3b4ce093a22

    • SHA256

      ebaec4e92caf82b8b290e9feda97ea49ff342fd278b6b057afd006b010e1ec18

    • SHA512

      d9c67e966887a0b1f809b7f69563c1b0e376be2cd735fb336a76703e1e3e3430496ed81f4ba57a0b2ddad5229e2cfa6532834083b1611bca5535cb05f9edbbd2

    • SSDEEP

      6144:boy5p178U0MURaGyNXYWQzHazRfXrwSRnWwhrQ66fa:boSeGUA5YZazpXUmZhZ6S

    • 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