Analysis

  • max time kernel
    120s
  • max time network
    106s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    13-08-2024 00:44

General

  • Target

    0d47828b888817ccc0b40056b40211e0N.exe

  • Size

    281KB

  • MD5

    0d47828b888817ccc0b40056b40211e0

  • SHA1

    d8972a78e2593118b123aa162d5ceec313f3f47e

  • SHA256

    bd5cd250cd8e3bb4b497cc273411ca4efa1b366e27d956be38be62881f2758b2

  • SHA512

    60638944eacdaccb577335636d4774e6cd143a68b484e825627901a8828cb8a15a1bd8d08c8bdbbec0d0718f640f10f4817da3c4ad28c44be105639a2013cc7a

  • SSDEEP

    6144:boy5p178U0MURaGyNXYWQzHazRfXrwSRnWwhrQ66fKkfn:boSeGUA5YZazpXUmZhZ6SC

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

Signatures

  • NanoCore

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

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 2 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\0d47828b888817ccc0b40056b40211e0N.exe
    "C:\Users\Admin\AppData\Local\Temp\0d47828b888817ccc0b40056b40211e0N.exe"
    1⤵
    • Checks computer location settings
    • Adds Run key to start application
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1912
    • C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
      "C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetThreadContext
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:4196
      • C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
        "C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe"
        3⤵
        • Executes dropped EXE
        • Checks whether UAC is enabled
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious behavior: GetForegroundWindowSpam
        • Suspicious use of AdjustPrivilegeToken
        PID:4268

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe

    Filesize

    281KB

    MD5

    b5d7470524b76979faa6ec7749832063

    SHA1

    eff52e721968440b250000ce452ae06662dc4b4e

    SHA256

    3c051e22b95b4a4923764664b88a668e0240c48220e0809d2c7e9942ffe05df8

    SHA512

    1cd089a504596e2ac22dc2ee91ff5d4a5b04df3795560c711cf21aba687179359afb355869f638157c3d65f37bbeefddbe0ad27b79b355bd399a52f40d82f2f0

  • memory/1912-1-0x00000000753F0000-0x00000000759A1000-memory.dmp

    Filesize

    5.7MB

  • memory/1912-2-0x00000000753F0000-0x00000000759A1000-memory.dmp

    Filesize

    5.7MB

  • memory/1912-3-0x00000000753F0000-0x00000000759A1000-memory.dmp

    Filesize

    5.7MB

  • memory/1912-17-0x00000000753F0000-0x00000000759A1000-memory.dmp

    Filesize

    5.7MB

  • memory/1912-0-0x00000000753F2000-0x00000000753F3000-memory.dmp

    Filesize

    4KB

  • memory/4196-30-0x00000000753F0000-0x00000000759A1000-memory.dmp

    Filesize

    5.7MB

  • memory/4196-18-0x00000000753F0000-0x00000000759A1000-memory.dmp

    Filesize

    5.7MB

  • memory/4196-19-0x00000000753F0000-0x00000000759A1000-memory.dmp

    Filesize

    5.7MB

  • memory/4196-32-0x00000000753F0000-0x00000000759A1000-memory.dmp

    Filesize

    5.7MB

  • memory/4268-22-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/4268-25-0x00000000753F0000-0x00000000759A1000-memory.dmp

    Filesize

    5.7MB

  • memory/4268-26-0x00000000753F0000-0x00000000759A1000-memory.dmp

    Filesize

    5.7MB

  • memory/4268-27-0x00000000753F0000-0x00000000759A1000-memory.dmp

    Filesize

    5.7MB

  • memory/4268-29-0x00000000753F0000-0x00000000759A1000-memory.dmp

    Filesize

    5.7MB

  • memory/4268-20-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/4268-21-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/4268-33-0x00000000753F0000-0x00000000759A1000-memory.dmp

    Filesize

    5.7MB

  • memory/4268-34-0x00000000753F0000-0x00000000759A1000-memory.dmp

    Filesize

    5.7MB