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
    118s
  • max time network
    143s
  • 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

Sharing

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Report Analysis Logs

General

  • Target
    BulkMailer_App/email_recipients_sample.xlsx
  • Size 5KB
  • Sample260708-pedktsft2t
  • SHA256 88c0ab7c4ce0c85a842f570b442735f53140f012e3732b965a3c1499efe08be7
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
8/10
adwarepersistenceransomwarespyware

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 62 IoCs

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

  • Checks processor information in registry 2 TTPs 3 IoCs

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

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Modifies Internet Explorer settings 1 TTPs 1 IoCs
    adwarespyware
  • Modifies registry class 38 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 44 IoCs
  • Suspicious use of FindShellTrayWindow 53 IoCs
  • Suspicious use of SendNotifyMessage 43 IoCs
  • Suspicious use of SetWindowsHookEx 25 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:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
    "C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\BulkMailer_App\email_recipients_sample.xlsx"
    1⤵
    • Checks processor information in registry
    • Enumerates system info in registry
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of SetWindowsHookEx
    PID:1096
  • C:\Windows\system32\sihost.exe
    sihost.exe
    1⤵
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of WriteProcessMemory
    PID:984
    • 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:2856
  • 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:5612
  • 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:3468

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

        b8ab77100df80ab2.customDestinations-ms
        • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\b8ab77100df80ab2.customDestinations-ms
        • Size 669B
        • SHA256 2ab1a7ddbc8ead3ead9afef87324719f7b3ec9683a6e2e234833c518330df52b
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        memory/1096-1-0x00007FFD59280000-0x00007FFD59290000-memory.dmp
        Download

        memory/1096-14-0x00007FFD99140000-0x00007FFD993A3000-memory.dmp
        Download

        memory/1096-3-0x00007FFD9929F000-0x00007FFD992A0000-memory.dmp
        Download

        memory/1096-0-0x00007FFD59280000-0x00007FFD59290000-memory.dmp
        Download

        memory/1096-6-0x00007FFD99140000-0x00007FFD993A3000-memory.dmp
        Download

        memory/1096-9-0x00007FFD99140000-0x00007FFD993A3000-memory.dmp
        Download

        memory/1096-10-0x00007FFD99140000-0x00007FFD993A3000-memory.dmp
        Download

        memory/1096-8-0x00007FFD99140000-0x00007FFD993A3000-memory.dmp
        Download

        memory/1096-7-0x00007FFD59280000-0x00007FFD59290000-memory.dmp
        Download

        memory/1096-11-0x00007FFD56970000-0x00007FFD56980000-memory.dmp
        Download

        memory/1096-12-0x00007FFD56970000-0x00007FFD56980000-memory.dmp
        Download

        memory/1096-4-0x00007FFD99140000-0x00007FFD993A3000-memory.dmp
        Download

        memory/1096-15-0x00007FFD99140000-0x00007FFD993A3000-memory.dmp
        Download

        memory/1096-5-0x00007FFD59280000-0x00007FFD59290000-memory.dmp
        Download

        memory/1096-2-0x00007FFD59280000-0x00007FFD59290000-memory.dmp
        Download

        memory/2856-209-0x000000000E280000-0x000000000EAFB000-memory.dmp
        Download

        memory/5612-24-0x00000171801E0000-0x00000171802E0000-memory.dmp
        Download

        memory/5612-70-0x0000017181C00000-0x0000017181C20000-memory.dmp
        Download

        memory/5612-56-0x0000017181BE0000-0x0000017181C00000-memory.dmp
        Download

        memory/5612-57-0x0000017181DE0000-0x0000017181EE0000-memory.dmp
        Download

        memory/5612-89-0x00000171941E0000-0x0000017194200000-memory.dmp
        Download