Analysis

  • max time kernel
    148s
  • max time network
    148s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    25/01/2025, 22:58

General

  • Target

    5367a32045767b8af7e9bdcb26ce5589be82f4df2bae6c54c8f632fbbd48e51d.exe

  • Size

    280KB

  • MD5

    9eba144eb34351954d5cb58220c7c72c

  • SHA1

    94d629fae72f9e251a30281cb0838af086107a44

  • SHA256

    5367a32045767b8af7e9bdcb26ce5589be82f4df2bae6c54c8f632fbbd48e51d

  • SHA512

    f14c59e4bb494093da204344e5c55ad8ea7cd3e1260fb0083b258b3e1ffa3a94d55e02ba7bf9e449dcb5378044c49d7694f63a595c4dcd5fe1dc51db0ae696d3

  • SSDEEP

    6144:boy5p178U0MURaGyNXYWQzHazRfXrwSRnWwhrQ66fb:boSeGUA5YZazpXUmZhZ6T

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.

  • Nanocore family
  • 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\5367a32045767b8af7e9bdcb26ce5589be82f4df2bae6c54c8f632fbbd48e51d.exe
    "C:\Users\Admin\AppData\Local\Temp\5367a32045767b8af7e9bdcb26ce5589be82f4df2bae6c54c8f632fbbd48e51d.exe"
    1⤵
    • Checks computer location settings
    • Adds Run key to start application
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3192
    • 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:2612
      • 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:4044

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

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

    Filesize

    280KB

    MD5

    4568aae9f054bcd65680a622ffabfac0

    SHA1

    e1e6512deca7f0f3dd3a1a4b1c4420af533a6269

    SHA256

    0fc61f25109a97da18f6b2f3cb19318622def3867fd040bd0a1c18e585837ec6

    SHA512

    4eafd8169b0a614f951b0db0c7d745d7aa1250c981794deece8904138ba04a53623e87d049d8df63a40ce7dd43ecde31817aed82a16d287be0de3ce19c9d4413

  • memory/2612-40-0x0000000074730000-0x0000000074CE1000-memory.dmp

    Filesize

    5.7MB

  • memory/2612-27-0x0000000074730000-0x0000000074CE1000-memory.dmp

    Filesize

    5.7MB

  • memory/2612-26-0x0000000074730000-0x0000000074CE1000-memory.dmp

    Filesize

    5.7MB

  • memory/2612-25-0x0000000074730000-0x0000000074CE1000-memory.dmp

    Filesize

    5.7MB

  • memory/2612-24-0x0000000074730000-0x0000000074CE1000-memory.dmp

    Filesize

    5.7MB

  • memory/2612-23-0x0000000074730000-0x0000000074CE1000-memory.dmp

    Filesize

    5.7MB

  • memory/2612-22-0x0000000074730000-0x0000000074CE1000-memory.dmp

    Filesize

    5.7MB

  • memory/3192-6-0x0000000074730000-0x0000000074CE1000-memory.dmp

    Filesize

    5.7MB

  • memory/3192-21-0x0000000074730000-0x0000000074CE1000-memory.dmp

    Filesize

    5.7MB

  • memory/3192-7-0x0000000074730000-0x0000000074CE1000-memory.dmp

    Filesize

    5.7MB

  • memory/3192-0-0x0000000074732000-0x0000000074733000-memory.dmp

    Filesize

    4KB

  • memory/3192-5-0x0000000074730000-0x0000000074CE1000-memory.dmp

    Filesize

    5.7MB

  • memory/3192-4-0x0000000074732000-0x0000000074733000-memory.dmp

    Filesize

    4KB

  • memory/3192-3-0x0000000074730000-0x0000000074CE1000-memory.dmp

    Filesize

    5.7MB

  • memory/3192-2-0x0000000074730000-0x0000000074CE1000-memory.dmp

    Filesize

    5.7MB

  • memory/3192-1-0x0000000074730000-0x0000000074CE1000-memory.dmp

    Filesize

    5.7MB

  • memory/4044-29-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/4044-28-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/4044-33-0x0000000074730000-0x0000000074CE1000-memory.dmp

    Filesize

    5.7MB

  • memory/4044-35-0x0000000074730000-0x0000000074CE1000-memory.dmp

    Filesize

    5.7MB

  • memory/4044-34-0x0000000074730000-0x0000000074CE1000-memory.dmp

    Filesize

    5.7MB

  • memory/4044-37-0x0000000074730000-0x0000000074CE1000-memory.dmp

    Filesize

    5.7MB

  • memory/4044-38-0x0000000074730000-0x0000000074CE1000-memory.dmp

    Filesize

    5.7MB

  • memory/4044-31-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/4044-41-0x0000000074730000-0x0000000074CE1000-memory.dmp

    Filesize

    5.7MB