General

  • Target

    783a44be570cee691b8a7cc71e2a4f62560d0dea12fd8889d7bc5075fb1c018e.exe

  • Size

    255KB

  • Sample

    241202-aszb5azlds

  • MD5

    bdc46f6e0e23991a9a7bfe9f68db2077

  • SHA1

    47b1322dbf72428dbb7f7bce44ef3554e7e87e39

  • SHA256

    783a44be570cee691b8a7cc71e2a4f62560d0dea12fd8889d7bc5075fb1c018e

  • SHA512

    9ef617fe0cbdafc9a75a6e49436bc1cecb6db5d359d5556a02a63428c6c8e13d51137c71edc41b116eaabf8912387f0f61126fcccce8ce58d45a1edcc38bc5a7

  • SSDEEP

    6144:85p178U0MURaGyNXYWQzHazRfXrwSRnWwhrQSM:EeGUA5YZazpXUmZhdM

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

      783a44be570cee691b8a7cc71e2a4f62560d0dea12fd8889d7bc5075fb1c018e.exe

    • Size

      255KB

    • MD5

      bdc46f6e0e23991a9a7bfe9f68db2077

    • SHA1

      47b1322dbf72428dbb7f7bce44ef3554e7e87e39

    • SHA256

      783a44be570cee691b8a7cc71e2a4f62560d0dea12fd8889d7bc5075fb1c018e

    • SHA512

      9ef617fe0cbdafc9a75a6e49436bc1cecb6db5d359d5556a02a63428c6c8e13d51137c71edc41b116eaabf8912387f0f61126fcccce8ce58d45a1edcc38bc5a7

    • SSDEEP

      6144:85p178U0MURaGyNXYWQzHazRfXrwSRnWwhrQSM:EeGUA5YZazpXUmZhdM

    • 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