Overview

overview

10

Static

static

3

b4a1471bd0...bN.exe

windows7-x64

7

b4a1471bd0...bN.exe

windows10-2004-x64

10

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General

  • Target

    b4a1471bd00c97659be8d2c5a52605ff27b398043e0cb779394e4bec5b8c5b1bN.exe

  • Size

    256KB

  • Sample

    241231-h1ayhatnav

  • MD5

    a260686fa8cb39e3100ffddb086c2ee0

  • SHA1

    5237ea9f3bbc71b52de72816c01332b1d3d48e0c

  • SHA256

    b4a1471bd00c97659be8d2c5a52605ff27b398043e0cb779394e4bec5b8c5b1b

  • SHA512

    789cb135dc2877e438803ed4102f52b257e9274fabaacd00ca5d4fe074cfadb5abe60bb1a85e5b0b4473d2ea5204be0ba46dca077a70545d93b410d102666153

  • SSDEEP

    6144:85p178U0MURaGyNXYWQzHazRfXrwSRnWwhrQ4l:EeGUA5YZazpXUmZhPl

Score
10/10
nanocorediscoveryevasionkeyloggerpersistencespywarestealertrojan

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

      b4a1471bd00c97659be8d2c5a52605ff27b398043e0cb779394e4bec5b8c5b1bN.exe

    • Size

      256KB

    • MD5

      a260686fa8cb39e3100ffddb086c2ee0

    • SHA1

      5237ea9f3bbc71b52de72816c01332b1d3d48e0c

    • SHA256

      b4a1471bd00c97659be8d2c5a52605ff27b398043e0cb779394e4bec5b8c5b1b

    • SHA512

      789cb135dc2877e438803ed4102f52b257e9274fabaacd00ca5d4fe074cfadb5abe60bb1a85e5b0b4473d2ea5204be0ba46dca077a70545d93b410d102666153

    • SSDEEP

      6144:85p178U0MURaGyNXYWQzHazRfXrwSRnWwhrQ4l:EeGUA5YZazpXUmZhPl

    Score
    10/10
    discoverypersistencenanocoreevasionkeyloggerspywarestealertrojan

    • NanoCore

      NanoCore is a remote access tool (RAT) with a variety of capabilities.

      keyloggertrojanstealerspywarenanocore

    • Nanocore family

      nanocore

    • 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

      persistence

    • Checks whether UAC is enabled

      evasiontrojan

    • Suspicious use of SetThreadContext

    behavioral1behavioral2

MITRE ATT&CK Enterprise v15

Tasks