Analysis

  • max time kernel
    149s
  • max time network
    143s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260911-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260911-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    09/11/2026, 10:15

General

  • Target
    Payment Swift Advise02387465463.JS.js
  • Size 4.8MB
  • Sample261109-mab54aee74
  • SHA256 b6c111ed2740211cb0e3617f09d67e1c580f77b55bdabede2ef7f34d85f0865b
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Extracted

Family
  • remcos

Version
  • 7.3.1 Pro

Botnet
  • RemoteHost

C2
  • ocean012.duckdns.org:7474

  • oceanbiggi907.duckdns.org:7474

Attributes
  • audio_folder

    MicRecords

  • audio_path

    ApplicationPath

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    1

  • copy_file

    remcos.exe

  • copy_folder

    Remcos

  • delete_file

    false

  • hide_file

    false

  • hide_keylog_file

    false

  • install_flag

    false

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • mouse_option

    false

  • mutex

    yut-QEKAE1

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Signatures

  • Family: DonutLoader

    DonutLoader is a position-independent code that enables in-memory execution of VBScript, JScript, EXE, DLL files and dotNET assemblies.

  • Family: Remcos

    Remcos is a closed-source remote control and surveillance software.

  • Detects DonutLoader 2 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • Command and Scripting Interpreter: JavaScript 1 TTPs
  • Enumerates physical storage devices 1 TTPs

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

  • Executes a command shell one-liner 1 TTPs 1 IoCs

    Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.

  • Reads the TCP/IP host and domain name from the registry 1 TTPs 2 IoCs

    The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.

  • NTFS ADS 1 IoCs
  • Suspicious use of WriteProcessMemory 2 IoCs

Processes

  • C:\Windows\system32\wscript.exe
    wscript.exe "C:\Users\Admin\AppData\Local\Temp\Payment Swift Advise02387465463.JS.js"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4652
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c echo. > "C:\Users\Admin\AppData\Local\Temp\Payment Swift Advise02387465463.JS.js:Zone.Identifier"
      2⤵
      • Executes a command shell one-liner
      • NTFS ADS
      PID:4376
    • C:\Users\Admin\Documents\SYZARVJJGKZNUVIR.exe
      "C:\Users\Admin\Documents\SYZARVJJGKZNUVIR.exe" C:\Users\Admin\Documents\RIVUNZKGJJVRAZYS
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Reads the TCP/IP host and domain name from the registry
      PID:1876

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        RIVUNZKGJJVRAZYS

        • Path C:\Users\Admin\Documents\RIVUNZKGJJVRAZYS
        • Size 1.1MB
        • SHA256 8016313257c1f4080121318a96735de0243ad8484eec656e47aac625247b423c
        • MD5 SHA1 SHA512 SSDEEP TLSH

        SYZARVJJGKZNUVIR.exe

        • Path C:\Users\Admin\Documents\SYZARVJJGKZNUVIR.exe
        • Size 27KB
        • SHA256 70916418ff0b6c2a12e8897ff622bdbb115435d38f0afe3ea981de1e7652ebb4
        • MD5 SHA1 SHA512 SSDEEP TLSH

        lua51.dll

        • Path C:\Users\Admin\Documents\lua51.dll
        • Size 439KB
        • SHA256 2f52407927015a8bf4a2a6765ccb599bc438c9a19e1d4a5dda1f5292a0c0e50a
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/1876-14-0x0000000057FD0000-0x0000000057FE0000-memory.dmp

        memory/1876-15-0x0000000057FD0000-0x0000000057FE0000-memory.dmp

        memory/1876-16-0x0000000057FD0000-0x0000000057FE0000-memory.dmp

        memory/1876-17-0x0000000057FD0000-0x0000000057FE0000-memory.dmp

        memory/1876-18-0x0000000057FD0000-0x0000000057FE0000-memory.dmp

        memory/1876-19-0x0000000057FD0000-0x0000000057FE0000-memory.dmp

        memory/1876-21-0x0000000057FD0000-0x0000000057FE0000-memory.dmp

        memory/1876-22-0x0000000057FD0000-0x0000000057FE0000-memory.dmp

        memory/1876-20-0x0000000057FD0000-0x0000000057FE0000-memory.dmp

        memory/1876-25-0x0000000057FD0000-0x0000000057FE0000-memory.dmp

        memory/1876-24-0x0000000057FD0000-0x0000000057FE0000-memory.dmp

        memory/1876-23-0x0000000057FD0000-0x0000000057FE0000-memory.dmp

        memory/1876-26-0x0000000057FD0000-0x0000000057FE0000-memory.dmp

        memory/1876-30-0x0000000057FD0000-0x0000000057FE0000-memory.dmp

        memory/1876-31-0x0000000057FD0000-0x0000000057FE0000-memory.dmp

        memory/1876-29-0x0000000057FD0000-0x0000000057FE0000-memory.dmp

        memory/1876-28-0x0000000057FD0000-0x0000000057FE0000-memory.dmp

        memory/1876-27-0x0000000057FD0000-0x0000000057FE0000-memory.dmp

        memory/1876-32-0x0000000057FD0000-0x0000000057FE0000-memory.dmp

        memory/1876-33-0x0000000057FD0000-0x0000000057FE0000-memory.dmp

        memory/1876-34-0x0000000057FD0000-0x0000000057FE0000-memory.dmp

        memory/1876-37-0x0000000057FD0000-0x0000000057FE0000-memory.dmp

        memory/1876-36-0x0000000057FD0000-0x0000000057FE0000-memory.dmp

        memory/1876-35-0x0000000057FD0000-0x0000000057FE0000-memory.dmp

        memory/1876-44-0x0000000057FD0000-0x0000000057FE0000-memory.dmp

        memory/1876-54-0x0000000057FD0000-0x0000000057FE0000-memory.dmp

        memory/1876-55-0x0000000002460000-0x0000000003460000-memory.dmp

        memory/1876-56-0x0000000002460000-0x0000000002509000-memory.dmp

        memory/1876-57-0x00000000143E0000-0x000000001448F000-memory.dmp

        memory/1876-53-0x0000000057FD0000-0x0000000057FE0000-memory.dmp

        memory/1876-52-0x0000000057FD0000-0x0000000057FE0000-memory.dmp

        memory/1876-51-0x0000000057FD0000-0x0000000057FE0000-memory.dmp

        memory/1876-50-0x0000000057FD0000-0x0000000057FE0000-memory.dmp

        memory/1876-49-0x0000000057FD0000-0x0000000057FE0000-memory.dmp

        memory/1876-48-0x0000000057FD0000-0x0000000057FE0000-memory.dmp

        memory/1876-47-0x0000000057FD0000-0x0000000057FE0000-memory.dmp

        memory/1876-46-0x0000000057FD0000-0x0000000057FE0000-memory.dmp

        memory/1876-45-0x0000000057FD0000-0x0000000057FE0000-memory.dmp

        memory/1876-42-0x0000000057FD0000-0x0000000057FE0000-memory.dmp

        memory/1876-43-0x0000000057FD0000-0x0000000057FE0000-memory.dmp

        memory/1876-41-0x0000000057FD0000-0x0000000057FE0000-memory.dmp

        memory/1876-40-0x0000000057FD0000-0x0000000057FE0000-memory.dmp

        memory/1876-39-0x0000000057FD0000-0x0000000057FE0000-memory.dmp

        memory/1876-38-0x0000000057FD0000-0x0000000057FE0000-memory.dmp

        memory/1876-58-0x0000000180000000-0x000000018012C000-memory.dmp

        memory/1876-61-0x0000000180000000-0x000000018012C000-memory.dmp

        memory/1876-63-0x0000000066D80000-0x0000000066DF4000-memory.dmp

        memory/1876-62-0x0000000000400000-0x000000000040D000-memory.dmp