General

  • Target

    ed5afeaf1d9e897dd6f7b828abc156d6e970d95c6cfc20449df332df71024b8b.exe

  • Size

    255KB

  • Sample

    241219-hhb3vasrft

  • MD5

    027fc0df522843848839a97321a52d53

  • SHA1

    57975f68ceb1d5adc990491dd9b81180aae31cd9

  • SHA256

    ed5afeaf1d9e897dd6f7b828abc156d6e970d95c6cfc20449df332df71024b8b

  • SHA512

    9bd98f525829999022a8d88d9128c838f35e0cdd87c590484d3d9299ecad8800671ad257a32b82da2418141430d08f712d07b0a32cb773778d17f9e803771da0

  • SSDEEP

    6144:85p178U0MURaGyNXYWQzHazRfXrwSRnWwhrQ+s:EeGUA5YZazpXUmZhls

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

      ed5afeaf1d9e897dd6f7b828abc156d6e970d95c6cfc20449df332df71024b8b.exe

    • Size

      255KB

    • MD5

      027fc0df522843848839a97321a52d53

    • SHA1

      57975f68ceb1d5adc990491dd9b81180aae31cd9

    • SHA256

      ed5afeaf1d9e897dd6f7b828abc156d6e970d95c6cfc20449df332df71024b8b

    • SHA512

      9bd98f525829999022a8d88d9128c838f35e0cdd87c590484d3d9299ecad8800671ad257a32b82da2418141430d08f712d07b0a32cb773778d17f9e803771da0

    • SSDEEP

      6144:85p178U0MURaGyNXYWQzHazRfXrwSRnWwhrQ+s:EeGUA5YZazpXUmZhls

    • 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