Overview

overview

8

Static

static

3

BSK Optimi....0.exe

windows10-2004-x64

7

BSK Optimi....0.exe

windows11-ltsc_2024-x64

7

$PLUGINSDI...ls.dll

windows10-2004-x64

3

$PLUGINSDI...ls.dll

windows11-ltsc_2024-x64

3

$PLUGINSDI...em.dll

windows10-2004-x64

3

$PLUGINSDI...em.dll

windows11-ltsc_2024-x64

3

$PLUGINSDIR/UAC.dll

windows10-2004-x64

3

$PLUGINSDIR/UAC.dll

windows11-ltsc_2024-x64

8

$PLUGINSDI...ll.dll

windows10-2004-x64

3

$PLUGINSDI...ll.dll

windows11-ltsc_2024-x64

3

$PLUGINSDIR/app-64.7z

windows10-2004-x64

1

$PLUGINSDIR/app-64.7z

windows11-ltsc_2024-x64

8

BSK Optimizer.exe

windows10-2004-x64

7

BSK Optimizer.exe

windows11-ltsc_2024-x64

4

LICENSE.electron.txt

windows10-2004-x64

1

LICENSE.electron.txt

windows11-ltsc_2024-x64

8

chrome_100...nt.pak

windows10-2004-x64

3

chrome_100...nt.pak

windows11-ltsc_2024-x64

3

chrome_200...nt.pak

windows10-2004-x64

3

chrome_200...nt.pak

windows11-ltsc_2024-x64

3

icudtl.dat

windows10-2004-x64

3

icudtl.dat

windows11-ltsc_2024-x64

3

locales/af.pak

windows10-2004-x64

3

locales/af.pak

windows11-ltsc_2024-x64

3

locales/am.pak

windows10-2004-x64

3

locales/am.pak

windows11-ltsc_2024-x64

3

locales/ar.pak

windows10-2004-x64

3

locales/ar.pak

windows11-ltsc_2024-x64

3

locales/bg.pak

windows10-2004-x64

3

locales/bg.pak

windows11-ltsc_2024-x64

3

locales/bn.pak

windows10-2004-x64

3

locales/bn.pak

windows11-ltsc_2024-x64

3

Resubmissions

28/06/2026, 17:33

260628-v45y9sax8n8

28/06/2026, 17:28

260628-v2edjaav3t8

Analysis

  • max time kernel
    298s
  • max time network
    226s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260618-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260618-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    28/06/2026, 17:28

Sharing

Copy URL Twitter E-mail
Report Analysis Logs

General

  • Target
    $PLUGINSDIR/UAC.dll
  • Size 14KB
  • Sample260628-v2edjaav3t
  • SHA256 2f7f8fc05dc4fd0d5cda501b47e4433357e887bbfed7292c028d99c73b52dc08
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
8/10
adwarediscoverypersistenceransomwarespyware

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.

  • Program crash 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

    discovery
  • 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 44 IoCs
  • Suspicious use of FindShellTrayWindow 54 IoCs
  • Suspicious use of SendNotifyMessage 40 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 2 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\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\UAC.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1972
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\UAC.dll,#1
      2⤵
      • System Location Discovery: System Language Discovery
      PID:5420
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 5420 -s 584
        3⤵
        • Program crash
        PID:4672
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 5420 -ip 5420
    1⤵
      PID:3548
    • C:\Windows\system32\sihost.exe
      sihost.exe
      1⤵
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of WriteProcessMemory
      PID:5308
      • 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:3448
    • 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:4412
    • 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:1404
    • C:\Windows\system32\svchost.exe
      C:\Windows\system32\svchost.exe -k GPSvcGroup
      1⤵
        PID:976

      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/4412-20-0x000001B686EC0000-0x000001B686FC0000-memory.dmp
            Download

            memory/4412-52-0x000001B68A9E0000-0x000001B68AA00000-memory.dmp
            Download

            memory/4412-66-0x000001B69AEA0000-0x000001B69AEC0000-memory.dmp
            Download

            memory/4412-34-0x000001B69AA60000-0x000001B69AB60000-memory.dmp
            Download

            memory/4412-32-0x000001B68A600000-0x000001B68A620000-memory.dmp
            Download