General

  • Target

    fa2b8905afb96c52f7d359f4a20e8503516c88482a56b846021f43984a9b2c6c

  • Size

    255KB

  • Sample

    241124-fysdnasjek

  • MD5

    0fb3c8c8ccb6c70780c93ba34b634301

  • SHA1

    b1e874ee373732b8d60c8fabaadede58a712bed2

  • SHA256

    fa2b8905afb96c52f7d359f4a20e8503516c88482a56b846021f43984a9b2c6c

  • SHA512

    2961dd26638fe153e8d1a4c99a4443e88b5673bd73c5d918c2749f633070ab8eeb8a63d247e6bd8ad876c5c760acd2863e35fe9fd686c799eff4bdf35cae7aa2

  • SSDEEP

    6144:85p178U0MURaGyNXYWQzHazRfXrwSRnWwhrQSd:EeGUA5YZazpXUmZhdd

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

      fa2b8905afb96c52f7d359f4a20e8503516c88482a56b846021f43984a9b2c6c

    • Size

      255KB

    • MD5

      0fb3c8c8ccb6c70780c93ba34b634301

    • SHA1

      b1e874ee373732b8d60c8fabaadede58a712bed2

    • SHA256

      fa2b8905afb96c52f7d359f4a20e8503516c88482a56b846021f43984a9b2c6c

    • SHA512

      2961dd26638fe153e8d1a4c99a4443e88b5673bd73c5d918c2749f633070ab8eeb8a63d247e6bd8ad876c5c760acd2863e35fe9fd686c799eff4bdf35cae7aa2

    • SSDEEP

      6144:85p178U0MURaGyNXYWQzHazRfXrwSRnWwhrQSd:EeGUA5YZazpXUmZhdd

    • 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