Analysis

  • max time kernel
    131s
  • max time network
    151s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260629-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260629-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    03/07/2026, 19:50

General

  • Target
    SKlauncher-4.0.29-web-setup.exe
  • Size 838KB
  • Sample260703-ykqa9afv2x
  • 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

    Using powershell.exe command.

  • 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 62 IoCs

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

  • Modifies Internet Explorer settings 1 TTPs 1 IoCs
  • Modifies registry class 40 IoCs
  • Suspicious behavior: EnumeratesProcesses 10 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 52 IoCs
  • Suspicious use of SendNotifyMessage 41 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 4 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.

  • Uses Volume Shadow Copy WMI provider

    The Volume Shadow Copy service is used to manage backups/snapshots.

  • Uses Volume Shadow Copy service COM API

    The Volume Shadow Copy service is used to manage backups/snapshots.

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:1128
    • 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:2152
    • 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:5788
    • 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:3844
  • C:\Windows\system32\sihost.exe
    sihost.exe
    1⤵
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of WriteProcessMemory
    PID:1284
    • 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:2452
  • 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:5484
  • 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:5012

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 16KB
        • SHA256 8db6923d6b1b617d15b2d9c3405a71226ee72e81537f1cd47f9ac186db2868a0
        • MD5 SHA1 SHA512 SSDEEP TLSH

        StartupProfileData-NonInteractive

        • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
        • Size 17KB
        • SHA256 b02d158432fcde7d4e656113453055b52ef95823a28ee30db7271713e9b7119b
        • 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_mmdvvobu.w3t.ps1

        • Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_mmdvvobu.w3t.ps1
        • Size 60B
        • SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
        • MD5 SHA1 SHA512 TLSH

        INetC.dll

        • Path C:\Users\Admin\AppData\Local\Temp\nsrAF66.tmp\INetC.dll
        • Size 238KB
        • SHA256 ed04a4823f221e9197b8f3c3da1d6859ff5b176185bde2f1c923a442516c810a
        • MD5 SHA1 SHA512 SSDEEP TLSH

        StdUtils.dll

        • Path C:\Users\Admin\AppData\Local\Temp\nsrAF66.tmp\StdUtils.dll
        • Size 100KB
        • SHA256 b72e9013a6204e9f01076dc38dabbf30870d44dfc66962adbf73619d4331601e
        • MD5 SHA1 SHA512 SSDEEP TLSH

        System.dll

        • Path C:\Users\Admin\AppData\Local\Temp\nsrAF66.tmp\System.dll
        • Size 12KB
        • SHA256 3eb38ae99653a7dbc724132ee240f6e5c4af4bfe7c01d31d23faf373f9f2eaca
        • MD5 SHA1 SHA512 SSDEEP TLSH

        UAC.dll

        • Path C:\Users\Admin\AppData\Local\Temp\nsrAF66.tmp\UAC.dll
        • Size 14KB
        • SHA256 2f7f8fc05dc4fd0d5cda501b47e4433357e887bbfed7292c028d99c73b52dc08
        • MD5 SHA1 SHA512 SSDEEP TLSH

        nsDialogs.dll

        • Path C:\Users\Admin\AppData\Local\Temp\nsrAF66.tmp\nsDialogs.dll
        • Size 9KB
        • SHA256 1e40211af65923c2f4fd02ce021458a7745d28e2f383835e3015e96575632172
        • MD5 SHA1 SHA512 SSDEEP TLSH

        nsExec.dll

        • Path C:\Users\Admin\AppData\Local\Temp\nsrAF66.tmp\nsExec.dll
        • Size 6KB
        • SHA256 5d9ceb1ce5f35aea5f9e5a0c0edeeec04dfefe0c77890c80c70e98209b58b962
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/2152-59-0x00000000073F0000-0x00000000073FA000-memory.dmp

        memory/2152-57-0x0000000007380000-0x000000000739A000-memory.dmp

        memory/2152-34-0x0000000005AE0000-0x0000000005B46000-memory.dmp

        memory/2152-32-0x0000000005120000-0x0000000005142000-memory.dmp

        memory/2152-41-0x0000000005B50000-0x0000000005EAB000-memory.dmp

        memory/2152-42-0x0000000006000000-0x000000000601E000-memory.dmp

        memory/2152-43-0x0000000006040000-0x000000000608C000-memory.dmp

        memory/2152-51-0x00000000736B0000-0x0000000073E6C000-memory.dmp

        memory/2152-45-0x000000006FFB0000-0x000000006FFFC000-memory.dmp

        memory/2152-44-0x0000000006FC0000-0x0000000006FF6000-memory.dmp

        memory/2152-53-0x0000000007020000-0x0000000007040000-memory.dmp

        memory/2152-54-0x00000000072D0000-0x0000000007373000-memory.dmp

        memory/2152-55-0x00000000736B0000-0x0000000073E6C000-memory.dmp

        memory/2152-29-0x00000000736B0000-0x0000000073E6C000-memory.dmp

        memory/2152-58-0x00000000736B0000-0x0000000073E6C000-memory.dmp

        memory/2152-56-0x0000000007A00000-0x000000000807C000-memory.dmp

        memory/2152-31-0x00000000736B0000-0x0000000073E6C000-memory.dmp

        memory/2152-60-0x0000000007590000-0x00000000075BA000-memory.dmp

        memory/2152-61-0x00000000075C0000-0x00000000075E4000-memory.dmp

        memory/2152-62-0x0000000070180000-0x00000000704DB000-memory.dmp

        memory/2152-64-0x00000000736B0000-0x0000000073E6C000-memory.dmp

        memory/2152-33-0x0000000005A70000-0x0000000005AD6000-memory.dmp

        memory/2152-30-0x00000000053B0000-0x00000000059FA000-memory.dmp

        memory/2152-27-0x00000000736C2000-0x00000000736C3000-memory.dmp

        memory/2152-28-0x00000000027B0000-0x00000000027E6000-memory.dmp

        memory/2452-297-0x000000000EAD0000-0x000000000EB9C000-memory.dmp

        memory/2452-298-0x000000000F960000-0x000000000F9DC000-memory.dmp

        memory/3844-102-0x000000006FFB0000-0x000000006FFFC000-memory.dmp

        memory/3844-109-0x0000000070120000-0x000000007047B000-memory.dmp

        memory/5484-142-0x0000021A01DC0000-0x0000021A01EC0000-memory.dmp

        memory/5484-117-0x0000021A001E0000-0x0000021A002E0000-memory.dmp

        memory/5484-168-0x0000021A14190000-0x0000021A141B0000-memory.dmp

        memory/5484-150-0x0000021A01C00000-0x0000021A01C20000-memory.dmp

        memory/5484-141-0x0000021A01990000-0x0000021A019B0000-memory.dmp

        memory/5788-87-0x0000000007660000-0x00000000076F6000-memory.dmp

        memory/5788-80-0x000000006FFB0000-0x000000006FFFC000-memory.dmp

        memory/5788-90-0x00000000736B0000-0x0000000073E6C000-memory.dmp

        memory/5788-78-0x0000000005AC0000-0x0000000005E1B000-memory.dmp

        memory/5788-71-0x00000000736B0000-0x0000000073E6C000-memory.dmp

        memory/5788-88-0x00000000075C0000-0x00000000075D1000-memory.dmp

        memory/5788-70-0x00000000736B0000-0x0000000073E6C000-memory.dmp

        memory/5788-69-0x00000000736B0000-0x0000000073E6C000-memory.dmp