Analysis

  • user interaction
    yes
  • max time kernel
    45s
  • max time network
    84s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260629-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260629-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    02/07/2026, 21:31

General

  • Target
    SKlauncher-4.0.29-web-setup.exe
  • Size 838KB
  • Sample260702-1c217ab18m
  • SHA256 62b2d500c04740285f9723071aa3dafc762246ba64205c98a10012748861a14b
  • MD5 SHA1 SHA512 SSDEEP TLSH

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.

  • Loads dropped DLL 8 IoCs
  • 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: PowerShell 1 TTPs 2 IoCs

    Run Powershell to get system information.

  • Hide Artifacts: Ignore Process Interrupts 1 TTPs 1 IoCs

    Command interpreters often include specific commands/flags that ignore errors and other hangups.

  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

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

  • Checks SCSI registry key(s) 3 TTPs 42 IoCs

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

  • Modifies Internet Explorer settings 1 TTPs 1 IoCs
  • Modifies registry class 16 IoCs
  • Suspicious behavior: EnumeratesProcesses 10 IoCs
  • Suspicious use of AdjustPrivilegeToken 34 IoCs
  • Suspicious use of FindShellTrayWindow 7 IoCs
  • Suspicious use of SendNotifyMessage 4 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\SKlauncher-4.0.29-web-setup.exe
    "C:\Users\Admin\AppData\Local\Temp\SKlauncher-4.0.29-web-setup.exe"
    1⤵
    • Loads dropped DLL
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:4220
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\system32\WindowsPowerShell\v1.0\powershell.exe" -C "if (Get-Command Get-CimInstance -ErrorAction SilentlyContinue) { exit 0 } else { exit 1 }"
      2⤵
      • Hide Artifacts: Ignore Process Interrupts
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:5224
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\system32\WindowsPowerShell\v1.0\powershell.exe" -C "if ((Get-ExecutionPolicy -Scope Process) -eq 'Restricted') { exit 1 } else { exit 0 }"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:6136
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\system32\WindowsPowerShell\v1.0\powershell.exe" -C "if ((Get-CimInstance -ClassName Win32_Process | ? {$_.Path -and $_.Path.StartsWith('C:\Users\Admin\AppData\Local\Programs\sklauncher', 'CurrentCultureIgnoreCase')}).Count -gt 0) { exit 0 } else { exit 1 }"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4756
  • C:\Windows\system32\sihost.exe
    sihost.exe
    1⤵
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of WriteProcessMemory
    PID:2040
    • 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
      PID:1364
  • 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:4348
  • 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:2844

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        StartupProfileData-NonInteractive

        • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
        • Size 17KB
        • SHA256 ed89b3ab153aacb815dee66ae01b416973f081e28cd53d00025b1186da1a5de3
        • MD5 SHA1 SHA512 SSDEEP TLSH

        StartupProfileData-NonInteractive

        • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
        • Size 16KB
        • SHA256 836fc4ccacf86b26436aba739df5724451910844336e09f88e9c79d2a581efb2
        • MD5 SHA1 SHA512 SSDEEP TLSH

        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

        __PSScriptPolicyTest_uxpgjoek.xdf.ps1

        • Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_uxpgjoek.xdf.ps1
        • Size 60B
        • SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
        • MD5 SHA1 SHA512 TLSH

        INetC.dll

        • Path C:\Users\Admin\AppData\Local\Temp\nsf110E.tmp\INetC.dll
        • Size 238KB
        • SHA256 ed04a4823f221e9197b8f3c3da1d6859ff5b176185bde2f1c923a442516c810a
        • MD5 SHA1 SHA512 SSDEEP TLSH

        StdUtils.dll

        • Path C:\Users\Admin\AppData\Local\Temp\nsf110E.tmp\StdUtils.dll
        • Size 100KB
        • SHA256 b72e9013a6204e9f01076dc38dabbf30870d44dfc66962adbf73619d4331601e
        • MD5 SHA1 SHA512 SSDEEP TLSH

        System.dll

        • Path C:\Users\Admin\AppData\Local\Temp\nsf110E.tmp\System.dll
        • Size 12KB
        • SHA256 3eb38ae99653a7dbc724132ee240f6e5c4af4bfe7c01d31d23faf373f9f2eaca
        • MD5 SHA1 SHA512 SSDEEP TLSH

        UAC.dll

        • Path C:\Users\Admin\AppData\Local\Temp\nsf110E.tmp\UAC.dll
        • Size 14KB
        • SHA256 2f7f8fc05dc4fd0d5cda501b47e4433357e887bbfed7292c028d99c73b52dc08
        • MD5 SHA1 SHA512 SSDEEP TLSH

        nsDialogs.dll

        • Path C:\Users\Admin\AppData\Local\Temp\nsf110E.tmp\nsDialogs.dll
        • Size 9KB
        • SHA256 1e40211af65923c2f4fd02ce021458a7745d28e2f383835e3015e96575632172
        • MD5 SHA1 SHA512 SSDEEP TLSH

        nsExec.dll

        • Path C:\Users\Admin\AppData\Local\Temp\nsf110E.tmp\nsExec.dll
        • Size 6KB
        • SHA256 5d9ceb1ce5f35aea5f9e5a0c0edeeec04dfefe0c77890c80c70e98209b58b962
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/2844-138-0x0000020204120000-0x0000020204140000-memory.dmp

        memory/2844-95-0x00000202001E0000-0x00000202002E0000-memory.dmp

        memory/2844-101-0x0000020201D40000-0x0000020201D60000-memory.dmp

        memory/2844-100-0x0000020201E20000-0x0000020201F20000-memory.dmp

        memory/2844-99-0x0000020201A20000-0x0000020201A40000-memory.dmp

        memory/4756-84-0x000000006FF60000-0x00000000702BB000-memory.dmp

        memory/4756-81-0x000000006FD50000-0x000000006FD9C000-memory.dmp

        memory/5224-50-0x00000000077F0000-0x000000000780A000-memory.dmp

        memory/5224-40-0x0000000007440000-0x0000000007476000-memory.dmp

        memory/5224-41-0x0000000073390000-0x0000000073B4C000-memory.dmp

        memory/5224-46-0x0000000007740000-0x00000000077E3000-memory.dmp

        memory/5224-47-0x0000000073390000-0x0000000073B4C000-memory.dmp

        memory/5224-48-0x0000000073390000-0x0000000073B4C000-memory.dmp

        memory/5224-49-0x0000000007E70000-0x00000000084EC000-memory.dmp

        memory/5224-42-0x000000006FD50000-0x000000006FD9C000-memory.dmp

        memory/5224-51-0x0000000007860000-0x000000000786A000-memory.dmp

        memory/5224-53-0x0000000007A30000-0x0000000007A54000-memory.dmp

        memory/5224-52-0x0000000007A00000-0x0000000007A2A000-memory.dmp

        memory/5224-54-0x000000006FF00000-0x000000007025B000-memory.dmp

        memory/5224-56-0x0000000073390000-0x0000000073B4C000-memory.dmp

        memory/5224-27-0x00000000733A2000-0x00000000733A3000-memory.dmp

        memory/5224-28-0x0000000002FA0000-0x0000000002FD6000-memory.dmp

        memory/5224-45-0x0000000006A70000-0x0000000006A90000-memory.dmp

        memory/5224-29-0x0000000073390000-0x0000000073B4C000-memory.dmp

        memory/5224-39-0x0000000006560000-0x00000000065AC000-memory.dmp

        memory/5224-30-0x0000000005900000-0x0000000005F4A000-memory.dmp

        memory/5224-31-0x0000000073390000-0x0000000073B4C000-memory.dmp

        memory/5224-32-0x00000000055B0000-0x00000000055D2000-memory.dmp

        memory/5224-33-0x0000000005650000-0x00000000056B6000-memory.dmp

        memory/5224-38-0x00000000064B0000-0x00000000064CE000-memory.dmp

        memory/5224-37-0x0000000006050000-0x00000000063AB000-memory.dmp

        memory/5224-34-0x00000000057F0000-0x0000000005856000-memory.dmp

        memory/6136-73-0x0000000073390000-0x0000000073B4C000-memory.dmp

        memory/6136-71-0x0000000007AE0000-0x0000000007AF1000-memory.dmp

        memory/6136-70-0x0000000007B80000-0x0000000007C16000-memory.dmp

        memory/6136-67-0x000000006FD50000-0x000000006FD9C000-memory.dmp

        memory/6136-65-0x0000000005FF0000-0x000000000634B000-memory.dmp

        memory/6136-62-0x0000000073390000-0x0000000073B4C000-memory.dmp

        memory/6136-61-0x0000000073390000-0x0000000073B4C000-memory.dmp