Overview

overview

10

Static

static

3

_607e18119...d4.exe

windows10-2004-x64

3

_607e18119...d4.exe

windows11-21h2-x64

10

Analysis

  • max time kernel
    149s
  • max time network
    146s
  • platform
    windows11-21h2_x64
  • resource
    win11-20251015-en
  • resource tags

    arch:x64arch:x86image:win11-20251015-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    24/10/2025, 00:37

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General

  • Target
    _607e18119b44e869812cccf8b2e7707d63024bde7ef1fc82da9086d2e21bf5d4.exe
  • Size 1.4MB
  • Sample251024-ayymsacq8v
  • SHA256 607e18119b44e869812cccf8b2e7707d63024bde7ef1fc82da9086d2e21bf5d4
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10
defense_evasiondiscoverynanocorekeyloggerpersistencespywarestealertrojan

Malware Config

Extracted

Family

  • nanocore

Version

  • 1.2.2.0

C2

  • elumadns.eluma101.com:5001

  • elumadns.hopto.org:5001

Mutex

  • c290fe3c-8d44-469f-b520-07f0091dbc36

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    elumadns.hopto.org

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2018-01-14T04:46:09.623375236Z

  • bypass_user_account_control

    true

  • bypass_user_account_control_data

  • clear_access_control

    true

  • clear_zone_identifier

    false

  • connect_delay

    4000

  • connection_port

    5001

  • default_group

    APRIL

  • 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

    c290fe3c-8d44-469f-b520-07f0091dbc36

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    elumadns.eluma101.com

  • primary_dns_server

    8.8.8.8

  • 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.

    keyloggertrojanstealerspywarenanocore
  • Nanocore family
    nanocore
  • Executes dropped EXE 2 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
    persistence
  • Checks whether UAC is enabled 1 TTPs 1 IoCs
    defense_evasiontrojan
  • Suspicious use of SetThreadContext 1 IoCs
  • Drops file in Windows directory 4 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

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

    discovery
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\_607e18119b44e869812cccf8b2e7707d63024bde7ef1fc82da9086d2e21bf5d4.exe
    "C:\Users\Admin\AppData\Local\Temp\_607e18119b44e869812cccf8b2e7707d63024bde7ef1fc82da9086d2e21bf5d4.exe"
    1⤵
    • Drops file in Windows directory
    • System Location Discovery: System Language Discovery
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:5616
    • C:\Windows\SysWOW64\explorer.exe
      "C:\Windows\System32\explorer.exe" /c select, C:\Users\Admin\AppData\Roaming\Calculator.exe
      2⤵
      • System Location Discovery: System Language Discovery
      PID:5588
  • C:\Windows\explorer.exe
    C:\Windows\explorer.exe /factory,{75dff2b7-6936-4c06-a8bb-676a7b00b24b} -Embedding
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4360
    • C:\Users\Admin\AppData\Roaming\Calculator.exe
      "C:\Users\Admin\AppData\Roaming\Calculator.exe"
      2⤵
      • Executes dropped EXE
      • Adds Run key to start application
      • Suspicious use of SetThreadContext
      • Drops file in Windows directory
      • System Location Discovery: System Language Discovery
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:3436
      • C:\Users\Admin\AppData\Roaming\Calculator.exe
        "C:\Users\Admin\AppData\Roaming\Calculator.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:336

Network

        MITRE ATT&CK Enterprise v16

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        Downloads

        Calculator.exe
        • Path C:\Users\Admin\AppData\Roaming\Calculator.exe
        • Size 1.4MB
        • SHA256 607e18119b44e869812cccf8b2e7707d63024bde7ef1fc82da9086d2e21bf5d4
        • MD5 SHA1 SHA512 SSDEEP
        Submit Download

        enterprisesec.config.cch
        • Path C:\Windows\Microsoft.NET\Framework\v2.0.50727\config\enterprisesec.config.cch
        • Size 516B
        • SHA256 948f30ce5a6216d878f707d3740dcc73f4a31bf0b230b08600e507e4d65bcc87
        • MD5 SHA1 SHA512
        Submit Download

        memory/336-15-0x0000000000400000-0x0000000000490000-memory.dmp
        Download

        memory/5616-0-0x0000000074DC1000-0x0000000074DC2000-memory.dmp
        Download

        memory/5616-1-0x0000000074DC0000-0x0000000075371000-memory.dmp
        Download

        memory/5616-2-0x0000000074DC0000-0x0000000075371000-memory.dmp
        Download

        memory/5616-3-0x0000000074DC0000-0x0000000075371000-memory.dmp
        Download

        memory/5616-10-0x0000000074DC0000-0x0000000075371000-memory.dmp
        Download