Overview

overview

8

Static

static

3

BulkMailer...e.xlsx

windows10-2004-x64

1

BulkMailer...e.xlsx

windows11-ltsc_2024-x64

8

BulkMailer...dex.js

windows10-2004-x64

3

BulkMailer...dex.js

windows11-ltsc_2024-x64

3

BulkMailer...e.xlsx

windows10-2004-x64

1

BulkMailer...e.xlsx

windows11-ltsc_2024-x64

1

BulkMailer...dex.js

windows10-2004-x64

3

BulkMailer...dex.js

windows11-ltsc_2024-x64

8

emailcampa...26.pdf

windows10-2004-x64

3

emailcampa...26.pdf

windows11-ltsc_2024-x64

emailcampa...gns.js

windows10-2004-x64

3

emailcampa...gns.js

windows11-ltsc_2024-x64

3

emailcampa...e.xlsx

windows10-2004-x64

1

emailcampa...e.xlsx

windows11-ltsc_2024-x64

1

emailcampa...dex.js

windows10-2004-x64

3

emailcampa...dex.js

windows11-ltsc_2024-x64

3

emailcampa...s.xlsx

windows10-2004-x64

1

emailcampa...s.xlsx

windows11-ltsc_2024-x64

8

emailcampa...er.ps1

windows10-2004-x64

3

emailcampa...er.ps1

windows11-ltsc_2024-x64

3

emailcampa...le.ps1

windows10-2004-x64

3

emailcampa...le.ps1

windows11-ltsc_2024-x64

3

emailcampa...on.ps1

windows10-2004-x64

3

emailcampa...on.ps1

windows11-ltsc_2024-x64

8

emailcampa...eg.ps1

windows10-2004-x64

3

emailcampa...eg.ps1

windows11-ltsc_2024-x64

emailcampa...gth.js

windows10-2004-x64

3

emailcampa...gth.js

windows11-ltsc_2024-x64

3

emailcampa...ny.ps1

windows10-2004-x64

3

emailcampa...ny.ps1

windows11-ltsc_2024-x64

3

emailcampa...am.ps1

windows10-2004-x64

3

emailcampa...am.ps1

windows11-ltsc_2024-x64

3

Analysis

  • max time kernel
    107s
  • max time network
    142s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260706-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260706-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    08/07/2026, 12:14

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Report Analysis Logs

General

  • Target
    BulkMailer_v2/index.js
  • Size 47KB
  • Sample260708-pedktsft2t
  • SHA256 572102c30553da0f93b8adf8926f7ee60de22a930534f850986ff5b35ced020e
  • 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 42 IoCs
  • Suspicious use of FindShellTrayWindow 54 IoCs
  • Suspicious use of SendNotifyMessage 40 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

Processes

  • C:\Windows\system32\wscript.exe
    wscript.exe C:\Users\Admin\AppData\Local\Temp\BulkMailer_v2\index.js
    1⤵
      PID:6028
    • C:\Windows\system32\sihost.exe
      sihost.exe
      1⤵
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of WriteProcessMemory
      PID:1572
      • 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:2292
    • 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:912
    • 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:1864

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

          Loading Replay Monitor...

          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/912-2-0x0000019C14ED0000-0x0000019C14FD0000-memory.dmp
          Download

          memory/912-1-0x0000019C14ED0000-0x0000019C14FD0000-memory.dmp
          Download

          memory/912-47-0x0000019C03FA0000-0x0000019C03FC0000-memory.dmp
          Download

          memory/912-14-0x0000019C03C60000-0x0000019C03D60000-memory.dmp
          Download

          memory/912-24-0x0000019C03910000-0x0000019C03930000-memory.dmp
          Download

          memory/912-13-0x0000019C03740000-0x0000019C03760000-memory.dmp
          Download

          memory/912-3-0x0000019C14ED0000-0x0000019C14FD0000-memory.dmp
          Download

          memory/2292-188-0x000000000E450000-0x000000000ECCB000-memory.dmp
          Download