Overview

overview

8

Static

static

3

skytools.exe

windows10-2004-x64

4

skytools.exe

windows11-ltsc_2024-x64

4

OpenSteamTool.dll

windows10-2004-x64

1

OpenSteamTool.dll

windows11-ltsc_2024-x64

1

dwmapi.dll

windows10-2004-x64

1

dwmapi.dll

windows11-ltsc_2024-x64

1

millennium...64.exe

windows10-2004-x64

1

millennium...64.exe

windows11-ltsc_2024-x64

1

millennium...64.exe

windows10-2004-x64

1

millennium...64.exe

windows11-ltsc_2024-x64

6

millennium...um.dll

windows10-2004-x64

1

millennium...um.dll

windows11-ltsc_2024-x64

6

millennium...64.dll

windows10-2004-x64

1

millennium...64.dll

windows11-ltsc_2024-x64

1

luatools/....dex.js

windows10-2004-x64

3

luatools/....dex.js

windows11-ltsc_2024-x64

3

luatools/....kit.js

windows10-2004-x64

3

luatools/....kit.js

windows11-ltsc_2024-x64

8

luatools/b...st.bat

windows10-2004-x64

1

luatools/b...st.bat

windows11-ltsc_2024-x64

8

luatools/b...ys.vbs

windows10-2004-x64

1

luatools/b...ys.vbs

windows11-ltsc_2024-x64

1

luatools/b...ds.bat

windows10-2004-x64

1

luatools/b...ds.bat

windows11-ltsc_2024-x64

1

luatools/b...am.cmd

windows10-2004-x64

1

luatools/b...am.cmd

windows11-ltsc_2024-x64

1

luatools/b...er.ps1

windows10-2004-x64

3

luatools/b...er.ps1

windows11-ltsc_2024-x64

8

luatools/b...der.sh

ubuntu-18.04-amd64

3

luatools/b...der.sh

debian-9-armhf

4

luatools/b...der.sh

debian-9-mips

3

luatools/b...der.sh

debian-9-mipsel

3

Analysis

  • max time kernel
    121s
  • max time network
    147s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260617-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260617-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    20/06/2026, 16:04

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General

  • Target
    luatools/.millennium/Dist/webkit.js
  • Size 21KB
  • Sample260620-th1a8ag17x
  • SHA256 5d2db00ba73c9503b707679ccb9167af4b859c83181471e973f537a678ad9102
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
8/10
adwareexecutionpersistenceransomwarespyware

Malware Config

Signatures

  • Boot or Logon Autostart Execution: Active Setup 2 TTPs 1 IoCs

    Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.

    persistence
  • Enumerates connected drives 3 TTPs 2 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Command and Scripting Interpreter: JavaScript 1 TTPs
    execution
  • Checks SCSI registry key(s) 3 TTPs 62 IoCs

    SCSI information is often read in order to detect sandboxing environments.

  • Modifies Internet Explorer settings 1 TTPs 1 IoCs
    adwarespyware
  • Modifies registry class 38 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 32 IoCs
  • Suspicious use of FindShellTrayWindow 53 IoCs
  • Suspicious use of SendNotifyMessage 41 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 1 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

    persistence
  • Uses Volume Shadow Copy WMI provider

    The Volume Shadow Copy service is used to manage backups/snapshots.

    ransomware
  • Uses Volume Shadow Copy service COM API

    The Volume Shadow Copy service is used to manage backups/snapshots.

    ransomware

Processes

  • C:\Windows\system32\wscript.exe
    wscript.exe C:\Users\Admin\AppData\Local\Temp\luatools\.millennium\Dist\webkit.js
    1⤵
      PID:5568
    • C:\Windows\system32\sihost.exe
      sihost.exe
      1⤵
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of WriteProcessMemory
      PID:1420
      • C:\Windows\explorer.exe
        explorer.exe /LOADSAVEDWINDOWS
        2⤵
        • Boot or Logon Autostart Execution: Active Setup
        • Enumerates connected drives
        • Checks SCSI registry key(s)
        • Modifies Internet Explorer settings
        • Modifies registry class
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        • Suspicious use of SetWindowsHookEx
        PID:4744
    • C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\SearchHost.exe
      "C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\SearchHost.exe" -ServerName:CortanaUI.AppXstmwaab17q5s3y22tp6apqz7a45vwv65.mca
      1⤵
      • Modifies registry class
      • Suspicious use of SetWindowsHookEx
      PID:5688
    • C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe
      "C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe" -ServerName:App.AppXywbrabmsek0gm3tkwpr5kwzbs55tkqay.mca
      1⤵
      • Modifies registry class
      • Suspicious use of SetWindowsHookEx
      PID:2432

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

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          Downloads

          prep_Activatable Class_Hermes_perf.cache
          • Path C:\Users\Admin\AppData\Local\Packages\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\TempState\prep_Activatable Class_Hermes_perf.cache
          • Size 599B
          • SHA256 b536a3dae9ea5c69081f0491eed829e3b57e32401fdf49a63031bcd6b20e6fdb
          • MD5 SHA1 SHA512 TLSH
          Submit Download

          memory/4744-188-0x000000000DBA0000-0x000000000E41B000-memory.dmp
          Download

          memory/5688-19-0x0000027C80000000-0x0000027C80100000-memory.dmp
          Download

          memory/5688-33-0x0000027C93C30000-0x0000027C93D30000-memory.dmp
          Download

          memory/5688-45-0x0000027C83BB0000-0x0000027C83BD0000-memory.dmp
          Download

          memory/5688-66-0x0000027C93FB0000-0x0000027C93FD0000-memory.dmp
          Download

          memory/5688-18-0x0000027C80000000-0x0000027C80100000-memory.dmp
          Download

          memory/5688-32-0x0000027C80FB0000-0x0000027C80FD0000-memory.dmp
          Download