Analysis

  • max time kernel
    148s
  • max time network
    117s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    09/08/2026, 18:14

General

  • Target
    Server/W2K3_W2K8/DrvInst/BDrv5706.msi
  • Size 2.2MB
  • Sample260809-wvsg9atbnb
  • SHA256 c93bf45510ebc3512320152d0608c4bddecd14dfc0da952f8ef4372875f9d75d
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Loads dropped DLL 14 IoCs
  • Enumerates connected drives 3 TTPs 46 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Drops file in Windows directory 13 IoCs
  • Event Triggered Execution: Installer Packages 2 TTPs 1 IoCs
  • 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.

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

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

  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of SetWindowsHookEx 4 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs
  • Uses Volume Shadow Copy service COM API

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

Processes

  • C:\Windows\system32\msiexec.exe
    msiexec.exe /I C:\Users\Admin\AppData\Local\Temp\Server\W2K3_W2K8\DrvInst\BDrv5706.msi
    1⤵
    • Enumerates connected drives
    • Event Triggered Execution: Installer Packages
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SetWindowsHookEx
    PID:2448
  • C:\Windows\system32\msiexec.exe
    C:\Windows\system32\msiexec.exe /V
    1⤵
    • Enumerates connected drives
    • Drops file in Windows directory
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:4092
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding A3AB7B17FD77ECB233C3D919A4E1A229 C
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      PID:4288
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:2716
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding B87194F9EA916DB1C4E9269FB5C385E3
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:4820
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:2932

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          MSI213A.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\MSI213A.tmp
          • Size 57KB
          • SHA256 ad12108b637a3856615ab58f612954258c2581ba92d59ab339c668a603f452a8
          • MD5 SHA1 SHA512 SSDEEP TLSH

          MSI23BC.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\MSI23BC.tmp
          • Size 97KB
          • SHA256 eaa050f1a41d238f9b684392d13592b49738c9135031356bc9bd8cc0593946d1
          • MD5 SHA1 SHA512 SSDEEP TLSH

          FixForUpgrade.exe

          • Path C:\Users\Admin\AppData\Local\Temp\{DA8EC3DF-5853-4C1A-AFB9-2CC267D671EB}\FixForUpgrade.exe
          • Size 76KB
          • SHA256 eb5195c16020d86e52d89eb7f424d9ffbfeec1ce7020c8c0b45a336dc9b04f5f
          • MD5 SHA1 SHA512 SSDEEP TLSH

          NetXtremeII.xml

          • Path C:\Users\Admin\AppData\Local\Temp\{DA8EC3DF-5853-4C1A-AFB9-2CC267D671EB}\NetXtremeII.xml
          • Size 2KB
          • SHA256 12205eb05cb1da87ea640ca2e679d2225131d3321ba01360deece23123fd48da
          • MD5 SHA1 SHA512 TLSH

          bmapi.dll

          • Path C:\Users\Admin\AppData\Local\Temp\{DA8EC3DF-5853-4C1A-AFB9-2CC267D671EB}\bmapi.dll
          • Size 572KB
          • SHA256 a7a0edaade37fd47e225edb6bd6fcb50ebcbce6965ceca9438b500b2bceee9f4
          • MD5 SHA1 SHA512 SSDEEP TLSH

          bxdiag.inf

          • Path C:\Users\Admin\AppData\Local\Temp\{DA8EC3DF-5853-4C1A-AFB9-2CC267D671EB}\bxdiag.inf
          • Size 25KB
          • SHA256 8de63311632e82f45ee45b0114df0b658a85161b87f1168ab37081a6cbc14fdb
          • MD5 SHA1 SHA512 SSDEEP TLSH

          bxnd.inf

          • Path C:\Users\Admin\AppData\Local\Temp\{DA8EC3DF-5853-4C1A-AFB9-2CC267D671EB}\bxnd.inf
          • Size 155KB
          • SHA256 49cd9d5f1f5fccf6e989a00fa76cf1ed431a6ca6b874c730470fc5ed69cd62c5
          • MD5 SHA1 SHA512 SSDEEP TLSH

          bxois.inf

          • Path C:\Users\Admin\AppData\Local\Temp\{DA8EC3DF-5853-4C1A-AFB9-2CC267D671EB}\bxois.inf
          • Size 9KB
          • SHA256 6d132b3b03f24eeffcf8fc323ca1625862b833cb0cbb48f373b065d4a2b78141
          • MD5 SHA1 SHA512 SSDEEP TLSH

          bxvbd.inf

          • Path C:\Users\Admin\AppData\Local\Temp\{DA8EC3DF-5853-4C1A-AFB9-2CC267D671EB}\bxvbd.inf
          • Size 22KB
          • SHA256 6d21883c8757555cbb99f85c313b8e316fc69523733bba6e07fdb05075329f93
          • MD5 SHA1 SHA512 SSDEEP TLSH

          difxapi.dll

          • Path C:\Users\Admin\AppData\Local\Temp\{DA8EC3DF-5853-4C1A-AFB9-2CC267D671EB}\difxapi.dll
          • Size 316KB
          • SHA256 34998dc12e70cd7ddbf9a190ee52835dbe73488eab37c0be7916e0931a754feb
          • MD5 SHA1 SHA512 SSDEEP TLSH

          evbd.inf

          • Path C:\Users\Admin\AppData\Local\Temp\{DA8EC3DF-5853-4C1A-AFB9-2CC267D671EB}\evbd.inf
          • Size 118KB
          • SHA256 da82880ec6147f86e610aa849f6d2a47f642c1467ad4037dd12072a6c33d3743
          • MD5 SHA1 SHA512 SSDEEP TLSH

          MSIC029.tmp

          • Path C:\Windows\Installer\MSIC029.tmp
          • Size 332KB
          • SHA256 88d10962e8ea3c5174091f8e1e59eef26d13fb51ef39e46f2392487d60bc0e72
          • MD5 SHA1 SHA512 SSDEEP TLSH

          metadata-2

          • Path \??\GLOBALROOT\Device\HarddiskVolumeShadowCopy2\System Volume Information\SPP\metadata-2
          • Size 26.1MB
          • SHA256 6df419f9c4605eba9428f5ab96d8e43162c5478c36f4943e98d58b6549397782
          • MD5 SHA1 SHA512 SSDEEP TLSH

          {76ce34d7-4167-4af8-93cb-b4b93420056c}_OnDiskSnapshotProp

          • Path \??\Volume{c61fbfff-0000-0000-0000-d08302000000}\System Volume Information\SPP\OnlineMetadataCache\{76ce34d7-4167-4af8-93cb-b4b93420056c}_OnDiskSnapshotProp
          • Size 6KB
          • SHA256 f8ffd475c64cd3dfa9b4a320b265fee1f0ed2e9a5e17a1a7ef272a00833e60b0
          • MD5 SHA1 SHA512 SSDEEP TLSH

          memory/4092-68-0x0000026904970000-0x0000026905314000-memory.dmp