Analysis

  • user interaction
    yes
  • max time kernel
    109s
  • max time network
    112s
  • platform
    windows11-21h2_x64
  • resource
    win11-20260513-en
  • resource tags

    arch:x64arch:x86image:win11-20260513-enlocale:en-usos:windows11-21h2-x64systemwindows
  • submitted
    09/08/2026, 22:10

General

  • Target
    $RYFZLDB.exe
  • Size 9.8MB
  • Sample260809-13skfawfqd
  • SHA256 48f359326787a848b89d838a318d797c51fd7feeeee602fff5f46b9d3f7b53ce
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Command and Scripting Interpreter: PowerShell 1 TTPs 3 IoCs

    Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 4 IoCs
  • Drops file in Windows directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

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

  • System Time Discovery 1 TTPs 1 IoCs

    Adversary may gather the system time and/or time zone settings from a local or remote system.

  • Checks SCSI registry key(s) 3 TTPs 5 IoCs

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

  • Modifies registry key 1 TTPs 7 IoCs
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 6 IoCs
  • Suspicious use of SetWindowsHookEx 5 IoCs
  • Suspicious use of WriteProcessMemory 15 IoCs
  • 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\$RYFZLDB.exe
    "C:\Users\Admin\AppData\Local\Temp\$RYFZLDB.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2504
    • C:\Users\Admin\AppData\Local\Temp\MadiumInstaller-1019E7AE-5A6D-4FCE-8FE4-BC4A57C6150B\MadiumInstaller.exe
      "C:\Users\Admin\AppData\Local\Temp\MadiumInstaller-1019E7AE-5A6D-4FCE-8FE4-BC4A57C6150B\MadiumInstaller.exe" --from-sfx --first-install
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:4820
      • C:\Windows\system32\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\system32\WindowsPowerShell\v1.0\powershell.exe" -NoLogo -NoProfile -NonInteractive -ExecutionPolicy Bypass -Command "$ErrorActionPreference='Stop'; if ($null -eq (Get-Command Get-MpComputerStatus -ErrorAction SilentlyContinue)) { exit 0 }; $status=Get-MpComputerStatus -ErrorAction SilentlyContinue; if ($null -eq $status -or $status.AntivirusEnabled -ne $true) { exit 0 }; $p='C:\Users\Admin\AppData\Local\Madium'.TrimEnd('\'); $current=@((Get-MpPreference -ErrorAction Stop).ExclusionPath); $has=@($current | Where-Object { $_ -and $_.TrimEnd('\') -ieq $p }).Count -gt 0; if (-not $has) { Add-MpPreference -ExclusionPath $p -ErrorAction Stop; $current=@((Get-MpPreference -ErrorAction Stop).ExclusionPath); $has=@($current | Where-Object { $_ -and $_.TrimEnd('\') -ieq $p }).Count -gt 0; if (-not $has) { throw 'Defender did not save the exclusion.' } }"
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:3280
      • C:\Program Files\dotnet\dotnet.exe
        dotnet.exe --list-runtimes
        3⤵
        • System Time Discovery
        PID:1032
      • C:\Windows\System32\reg.exe
        C:\Windows\System32\reg.exe query HKLM\SOFTWARE\Microsoft\VisualStudio\14.0\VC\Runtimes\x64 /v Installed
        3⤵
        • Modifies registry key
        PID:5220
      • C:\Windows\System32\reg.exe
        C:\Windows\System32\reg.exe query HKLM\SOFTWARE\WOW6432Node\Microsoft\VisualStudio\14.0\VC\Runtimes\x64 /v Installed
        3⤵
        • Modifies registry key
        PID:1500
      • C:\Windows\System32\reg.exe
        C:\Windows\System32\reg.exe query HKLM\SOFTWARE\Microsoft\VisualStudio\14.0\VC\Runtimes\x86 /v Installed
        3⤵
        • Modifies registry key
        PID:3920
      • C:\Windows\System32\reg.exe
        C:\Windows\System32\reg.exe query HKLM\SOFTWARE\WOW6432Node\Microsoft\VisualStudio\14.0\VC\Runtimes\x86 /v Installed
        3⤵
        • Modifies registry key
        PID:5944
      • C:\Windows\System32\reg.exe
        C:\Windows\System32\reg.exe query HKLM\SOFTWARE\Microsoft\EdgeUpdate\Clients\{F3017226-FE2A-4295-8BDF-00C3A9A7E4C5} /v pv
        3⤵
        • Modifies registry key
        PID:2928
      • C:\Windows\System32\reg.exe
        C:\Windows\System32\reg.exe query HKLM\SOFTWARE\WOW6432Node\Microsoft\EdgeUpdate\Clients\{F3017226-FE2A-4295-8BDF-00C3A9A7E4C5} /v pv
        3⤵
        • Modifies registry key
        PID:2712
      • C:\Windows\System32\reg.exe
        C:\Windows\System32\reg.exe query HKCU\Software\Microsoft\EdgeUpdate\Clients\{F3017226-FE2A-4295-8BDF-00C3A9A7E4C5} /v pv
        3⤵
        • Modifies registry key
        PID:1748
      • C:\Windows\System32\reg.exe
        C:\Windows\System32\reg.exe query "HKLM\SOFTWARE\Microsoft\NET Framework Setup\NDP\v4\Full" /v Release
        3⤵
          PID:5976
        • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
          C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe -NoLogo -NoProfile -NonInteractive -Command "$sig = Get-AuthenticodeSignature -LiteralPath 'C:\Users\Admin\AppData\Local\Madium\Installer\temp\deps\directx-redist.exe'; if ($sig.Status -eq 'Valid') { exit 0 }; exit 1"
          3⤵
          • Command and Scripting Interpreter: PowerShell
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:808
        • C:\Windows\system32\WindowsPowerShell\v1.0\powershell.exe
          "C:\Windows\system32\WindowsPowerShell\v1.0\powershell.exe" -NoLogo -NoProfile -NonInteractive -ExecutionPolicy Bypass -File "C:\Users\Admin\AppData\Local\Madium\Installer\temp\deps\install.ps1"
          3⤵
          • Command and Scripting Interpreter: PowerShell
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:2080
          • C:\Users\Admin\AppData\Local\Madium\Installer\temp\deps\directx-redist.exe
            "C:\Users\Admin\AppData\Local\Madium\Installer\temp\deps\directx-redist.exe" /Q /T:"C:\Users\Admin\AppData\Local\Madium\Installer\temp\deps\directx-files"
            4⤵
            • Executes dropped EXE
            • System Location Discovery: System Language Discovery
            PID:1432
          • C:\Users\Admin\AppData\Local\Madium\Installer\temp\deps\directx-files\DXSETUP.exe
            "C:\Users\Admin\AppData\Local\Madium\Installer\temp\deps\directx-files\DXSETUP.exe" /silent
            4⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Drops file in Windows directory
            • System Location Discovery: System Language Discovery
            PID:5164
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      • Suspicious use of AdjustPrivilegeToken
      PID:5028
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      1⤵
        PID:5824

      Network

            MITRE ATT&CK Enterprise v16

            Replay Monitor

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            Downloads

            Madium.exe.download

            • Path C:\Users\Admin\AppData\Local\Madium\Bin\Madium.exe.download
            • Size 12.0MB
            • SHA256 031e36ef302fcfc8527ec40cced1b9b6bfa2508493a8744932fd6403fc0edc51
            • MD5 SHA1 SHA512 SSDEEP TLSH

            dxupdate.cab

            • Path C:\Users\Admin\AppData\Local\Madium\INSTAL~1\temp\deps\DIRECT~1\dxupdate.cab
            • Size 94KB
            • SHA256 e18a5404b612e88fa8b403c9b33f064c0a89528db7ef9a79aa116908d0e6afed
            • MD5 SHA1 SHA512 SSDEEP TLSH

            NativeAssetsManifest.json

            • Path C:\Users\Admin\AppData\Local\Madium\Installer.new\data\flutter_assets\NativeAssetsManifest.json
            • Size 45B
            • SHA256 9548a31e4a048135c1d94f919328bfb62ae2c7bb3cab96557c7941daa97776cb
            • MD5 SHA1 SHA512

            DSETUP.dll

            • Path C:\Users\Admin\AppData\Local\Madium\Installer\temp\deps\directx-files\DSETUP.dll
            • Size 93KB
            • SHA256 2a61679eeedabf7d0d0ac14e5447486575622d6b7cfa56f136c1576ff96da21f
            • MD5 SHA1 SHA512 SSDEEP TLSH

            DSETUP32.DLL

            • Path C:\Users\Admin\AppData\Local\Madium\Installer\temp\deps\directx-files\DSETUP32.DLL
            • Size 1.5MB
            • SHA256 fb0e534f9b0926e518f1c2980640dfd29f14217cdfa37cf3a0c13349127ed9a8
            • MD5 SHA1 SHA512 SSDEEP TLSH

            DXSETUP.exe

            • Path C:\Users\Admin\AppData\Local\Madium\Installer\temp\deps\directx-files\DXSETUP.exe
            • Size 505KB
            • SHA256 8f47d7121ef6532ad9ad9901e44e237f5c30448b752028c58a9d19521414e40d
            • MD5 SHA1 SHA512 SSDEEP TLSH

            install.ps1

            • Path C:\Users\Admin\AppData\Local\Madium\Installer\temp\deps\install.ps1
            • Size 2KB
            • SHA256 7f7eb8cf4fba079948705a83f968f52937c9f1733e752eda436ba6319cd5bece
            • MD5 SHA1 SHA512 TLSH

            powershell.exe.log

            • Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log
            • Size 4KB
            • SHA256 e27390d57580e3dfba07bec3d8e430203bbc91e90f6937079b3fd52abc721bd4
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ModuleAnalysisCache

            • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\ModuleAnalysisCache
            • Size 61KB
            • SHA256 4709689ec4049202b2f7a5c6495119ff138a9e8d35b1c610b5458b5c86ebfacd
            • MD5 SHA1 SHA512 SSDEEP TLSH

            StartupProfileData-NonInteractive

            • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
            • Size 1KB
            • SHA256 f66dcfa4d243b9575b66da1fe2c62d2c8e2c4f154a127577be26a96b157180aa
            • MD5 SHA1 SHA512 TLSH

            StartupProfileData-NonInteractive

            • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
            • Size 1KB
            • SHA256 0cd81283d168fc891b184d052817ff13f641633e53a34e5a82e8b77971a3dea9
            • MD5 SHA1 SHA512 TLSH

            MadiumInstaller.exe

            • Path C:\Users\Admin\AppData\Local\Temp\MadiumInstaller-1019E7AE-5A6D-4FCE-8FE4-BC4A57C6150B\MadiumInstaller.exe
            • Size 201KB
            • SHA256 6fd337856b578dcd62a24c5247ca5ba92de246acc0a2d95e03400dc954a97f1c
            • MD5 SHA1 SHA512 SSDEEP TLSH

            app.so

            • Path C:\Users\Admin\AppData\Local\Temp\MadiumInstaller-1019E7AE-5A6D-4FCE-8FE4-BC4A57C6150B\data\app.so
            • Size 5.3MB
            • SHA256 0f6f8ad3b139c34d223f57f799a84065ce42530de7d87a9123a62169d3eb04a4
            • MD5 SHA1 SHA512 SSDEEP TLSH

            AssetManifest.bin

            • Path C:\Users\Admin\AppData\Local\Temp\MadiumInstaller-1019E7AE-5A6D-4FCE-8FE4-BC4A57C6150B\data\flutter_assets\AssetManifest.bin
            • Size 2B
            • SHA256 f566cc6fccc657365c0197accf3a7d6f80f85209ff666ff774f4dcbc524aa842
            • MD5 SHA1 SHA512

            FontManifest.json

            • Path C:\Users\Admin\AppData\Local\Temp\MadiumInstaller-1019E7AE-5A6D-4FCE-8FE4-BC4A57C6150B\data\flutter_assets\FontManifest.json
            • Size 82B
            • SHA256 28b1eb2b3d2e1ad60b8c8b0f9100b1ccbf492f7fa97f5bebb51ea97e73926e7d
            • MD5 SHA1 SHA512 TLSH

            NOTICES.Z

            • Path C:\Users\Admin\AppData\Local\Temp\MadiumInstaller-1019E7AE-5A6D-4FCE-8FE4-BC4A57C6150B\data\flutter_assets\NOTICES.Z
            • Size 102KB
            • SHA256 bdb492de2b031ec16101eede4cd2f26feefcd75c16a09239fa471a9cc552fcca
            • MD5 SHA1 SHA512 SSDEEP TLSH

            MaterialIcons-Regular.otf

            • Path C:\Users\Admin\AppData\Local\Temp\MadiumInstaller-1019E7AE-5A6D-4FCE-8FE4-BC4A57C6150B\data\flutter_assets\fonts\MaterialIcons-Regular.otf
            • Size 1.6MB
            • SHA256 d9865b671a09d683d13a863089d8825e0f61a37696ce5d7d448bc8023aa62453
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ink_sparkle.frag

            • Path C:\Users\Admin\AppData\Local\Temp\MadiumInstaller-1019E7AE-5A6D-4FCE-8FE4-BC4A57C6150B\data\flutter_assets\shaders\ink_sparkle.frag
            • Size 21KB
            • SHA256 1fe8436a743884cb65078fe8c7b38e18f5365f2a2961270916f426fd13c604af
            • MD5 SHA1 SHA512 SSDEEP TLSH

            stretch_effect.frag

            • Path C:\Users\Admin\AppData\Local\Temp\MadiumInstaller-1019E7AE-5A6D-4FCE-8FE4-BC4A57C6150B\data\flutter_assets\shaders\stretch_effect.frag
            • Size 17KB
            • SHA256 62a899ff4e168ac6ca888ce7c2f40e5d3fbf8ca20a1c3ded781a116a6d7907e2
            • MD5 SHA1 SHA512 SSDEEP TLSH

            icudtl.dat

            • Path C:\Users\Admin\AppData\Local\Temp\MadiumInstaller-1019E7AE-5A6D-4FCE-8FE4-BC4A57C6150B\data\icudtl.dat
            • Size 842KB
            • SHA256 998367809a821d595928089c197b3f7959f0420f81f79d4d0daee53378492ed5
            • MD5 SHA1 SHA512 SSDEEP TLSH

            flutter_windows.dll

            • Path C:\Users\Admin\AppData\Local\Temp\MadiumInstaller-1019E7AE-5A6D-4FCE-8FE4-BC4A57C6150B\flutter_windows.dll
            • Size 20.3MB
            • SHA256 a5c880a4218a04cfb3e58b103160334658122c5e43d3b818b3d9af5ab3e1fc0e
            • MD5 SHA1 SHA512 SSDEEP TLSH

            __PSScriptPolicyTest_iqbiv1tx.lyp.ps1

            • Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_iqbiv1tx.lyp.ps1
            • Size 60B
            • SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
            • MD5 SHA1 SHA512 TLSH

            DirectX.log

            • Path C:\Windows\Logs\DirectX.log
            • Size 475B
            • SHA256 123fad3fcd11382b4a4d88e846d4b484e6bbb66a6e8bcb8c718929da872aa061
            • MD5 SHA1 SHA512 TLSH

            memory/3280-100-0x000002072E6E0000-0x000002072E6FC000-memory.dmp

            memory/3280-97-0x000002072E5D0000-0x000002072E5EC000-memory.dmp

            memory/3280-101-0x000002072E6C0000-0x000002072E6CA000-memory.dmp

            memory/3280-102-0x000002072EB90000-0x000002072EBAA000-memory.dmp

            memory/3280-103-0x000002072E6D0000-0x000002072E6D8000-memory.dmp

            memory/3280-104-0x000002072E700000-0x000002072E706000-memory.dmp

            memory/3280-105-0x000002072E710000-0x000002072E71A000-memory.dmp

            memory/3280-98-0x000002072E5F0000-0x000002072E6A3000-memory.dmp

            memory/3280-99-0x000002072E6B0000-0x000002072E6BA000-memory.dmp

            memory/3280-89-0x000002072E420000-0x000002072E442000-memory.dmp

            memory/4820-131-0x0000022098050000-0x00000220994D5000-memory.dmp

            memory/4820-24-0x000002209DE20000-0x000002209E379000-memory.dmp

            memory/4820-120-0x0000022098050000-0x00000220994D5000-memory.dmp

            memory/4820-119-0x0000022098050000-0x00000220994D5000-memory.dmp

            memory/4820-139-0x0000022098050000-0x00000220994D5000-memory.dmp

            memory/4820-83-0x0000022098050000-0x00000220994D5000-memory.dmp

            memory/4820-22-0x000002209AFD0000-0x000002209AFD1000-memory.dmp

            memory/4820-26-0x000002209AFE0000-0x000002209AFE1000-memory.dmp

            memory/4820-467-0x0000022098050000-0x00000220994D5000-memory.dmp

            memory/4820-121-0x0000022098050000-0x00000220994D5000-memory.dmp

            memory/4820-25-0x000002209DE20000-0x000002209E379000-memory.dmp

            memory/4820-30-0x000002209DD80000-0x000002209DE00000-memory.dmp

            memory/4820-29-0x000002209DD80000-0x000002209DE00000-memory.dmp

            memory/4820-483-0x0000022098050000-0x00000220994D5000-memory.dmp

            memory/4820-484-0x0000022098050000-0x00000220994D5000-memory.dmp

            memory/4820-485-0x0000022098050000-0x00000220994D5000-memory.dmp

            memory/4820-23-0x000002209DE20000-0x000002209E379000-memory.dmp