General

  • Target

    8c62ea1c8a275d9c558c2f8f2ef0d917a1007d86de7273025dd50249fa5e3339N.exe

  • Size

    255KB

  • Sample

    241113-bdcegstfrg

  • MD5

    99818b30fad7b1cf91e8a7ffb6417630

  • SHA1

    cd3a1c3d3c0233d023c8b3f0a6c04b7f0271c6ba

  • SHA256

    8c62ea1c8a275d9c558c2f8f2ef0d917a1007d86de7273025dd50249fa5e3339

  • SHA512

    94ee4039ee97cdba52809556d17f2ec6b0facd1f51082f797b7522348b98520479cbb3c196da5944cbb42b0a8960ff7be66b4ef1724112a2e782203d2b54c873

  • SSDEEP

    6144:85p178U0MURaGyNXYWQzHazRfXrwSRnWwhrQ+r:EeGUA5YZazpXUmZhlr

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

      8c62ea1c8a275d9c558c2f8f2ef0d917a1007d86de7273025dd50249fa5e3339N.exe

    • Size

      255KB

    • MD5

      99818b30fad7b1cf91e8a7ffb6417630

    • SHA1

      cd3a1c3d3c0233d023c8b3f0a6c04b7f0271c6ba

    • SHA256

      8c62ea1c8a275d9c558c2f8f2ef0d917a1007d86de7273025dd50249fa5e3339

    • SHA512

      94ee4039ee97cdba52809556d17f2ec6b0facd1f51082f797b7522348b98520479cbb3c196da5944cbb42b0a8960ff7be66b4ef1724112a2e782203d2b54c873

    • SSDEEP

      6144:85p178U0MURaGyNXYWQzHazRfXrwSRnWwhrQ+r:EeGUA5YZazpXUmZhlr

    • 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