Overview

overview

8

Static

static

3

UnkLowKD23...05.exe

windows10-2004-x64

8

UnkLowKD23...05.exe

windows11-ltsc_2024-x64

8

VSPMsg.dll

windows10-2004-x64

8

VSPMsg.dll

windows11-ltsc_2024-x64

8

Analysis

  • max time kernel
    298s
  • max time network
    135s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260911-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260911-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    27/10/2026, 07:34

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General

  • Target
    VSPMsg.dll
  • Size 19KB
  • Sample261027-jd44hada32
  • SHA256 6e797e11271df97f8506922f01380655e1d7ee2f70bb86214843bcaf8eacb4d7
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
8/10
persistenceransomware

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.

  • Checks SCSI registry key(s) 3 TTPs 58 IoCs

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

  • Modifies registry class 64 IoCs
  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 64 IoCs
  • Suspicious use of SendNotifyMessage 46 IoCs
  • Suspicious use of SetWindowsHookEx 4 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\Explorer.EXE
    C:\Windows\Explorer.EXE
    1⤵
      PID:3288
      • C:\Windows\system32\rundll32.exe
        rundll32.exe C:\Users\Admin\AppData\Local\Temp\VSPMsg.dll,#1
        2⤵
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of WriteProcessMemory
        PID:2284
    • C:\Windows\explorer.exe
      explorer.exe
      1⤵
      • Boot or Logon Autostart Execution: Active Setup
      • Enumerates connected drives
      • Checks SCSI registry key(s)
      • Modifies registry class
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      • Suspicious use of SetWindowsHookEx
      PID:628
    • 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:4828
    • C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe
      "C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe" -ServerName:CortanaUI.AppX8z9r6jm96hw4bsbneegw0kyxx296wr9t.mca
      1⤵
      • Modifies registry class
      • Suspicious use of SetWindowsHookEx
      PID:640

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

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          Downloads

          AppCache134375600729898078.txt.~tmp
          • Path C:\Users\Admin\AppData\Local\Packages\Microsoft.Windows.Search_cw5n1h2txyewy\LocalState\DeviceSearchCache\AppCache134375600729898078.txt.~tmp
          • Size 88KB
          • SHA256 26a7ca9fda76a3b8d173492cd32fc2d9c7f83be99487878502256e237a8288af
          • MD5 SHA1 SHA512 SSDEEP TLSH
          Submit Download

          ~ortanaUnifiedTileModelCache.tmp
          • Path C:\Users\Admin\AppData\Local\Packages\Microsoft.Windows.Search_cw5n1h2txyewy\TempState\~ortanaUnifiedTileModelCache.tmp
          • Size 24KB
          • SHA256 c69fed308f533a43ba292546a7aa79a38231b0986bb17d4b31c322834d09637d
          • MD5 SHA1 SHA512 SSDEEP TLSH
          Submit Download

          memory/628-9-0x0000000005010000-0x0000000005011000-memory.dmp
          Download

          memory/640-10-0x0000022C9F700000-0x0000022C9F800000-memory.dmp
          Download

          memory/640-15-0x0000022CA0490000-0x0000022CA04B0000-memory.dmp
          Download

          memory/640-46-0x0000022CA0AA0000-0x0000022CA0AC0000-memory.dmp
          Download

          memory/640-45-0x0000022CA0450000-0x0000022CA0470000-memory.dmp
          Download

          memory/2284-0-0x000001EF64230000-0x000001EF64231000-memory.dmp
          Download