Analysis

  • max time kernel
    100s
  • max time network
    102s
  • platform
    windows11-21h2_x64
  • resource
    win11-20250619-en
  • resource tags

    arch:x64arch:x86image:win11-20250619-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    11/09/2025, 14:36

General

  • Target
    Documents.msi
  • Size 5.0MB
  • Sample250911-rywa4a1js5
  • SHA256 7adcc8466d2e071c926f0fdf9b5a601de304ef017df7d5cc0a1032b85783aad5
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • hijackloader

Attributes
  • directory

    %ALLUSERSPROFILE%\KVH_Scan_v4_x64

  • inject_dll

    %windir%\SysWOW64\pla.dll

xor.hex

Signatures

  • Detects HijackLoader (aka IDAT Loader) 1 IoCs
  • HijackLoader

    HijackLoader is a multistage loader first seen in 2023.

  • Hijackloader family
  • Suspicious use of NtCreateUserProcessOtherParentProcess 1 IoCs
  • Enumerates connected drives 3 TTPs 46 IoCs

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

  • Suspicious use of SetThreadContext 2 IoCs
  • Drops file in Windows directory 12 IoCs
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 9 IoCs
  • Event Triggered Execution: Installer Packages 2 TTPs 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 1 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 behavior: EnumeratesProcesses 13 IoCs
  • Suspicious behavior: MapViewOfSection 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of WriteProcessMemory 18 IoCs
  • Uses Volume Shadow Copy service COM API

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

Processes

  • C:\Windows\system32\sihost.exe
    sihost.exe
    1⤵
      PID:2932
      • C:\Windows\system32\openwith.exe
        "C:\Windows\system32\openwith.exe"
        2⤵
        • Suspicious behavior: EnumeratesProcesses
        PID:4844
    • C:\Windows\system32\msiexec.exe
      msiexec.exe /I C:\Users\Admin\AppData\Local\Temp\Documents.msi
      1⤵
      • Enumerates connected drives
      • Event Triggered Execution: Installer Packages
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      PID:1600
    • C:\Windows\system32\msiexec.exe
      C:\Windows\system32\msiexec.exe /V
      1⤵
      • Enumerates connected drives
      • Drops file in Windows directory
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2884
      • C:\Windows\system32\srtasks.exe
        C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
        2⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:4816
      • C:\Users\Admin\AppData\Local\Need\Nano-Ex.exe
        "C:\Users\Admin\AppData\Local\Need\Nano-Ex.exe"
        2⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of WriteProcessMemory
        PID:5972
        • C:\ProgramData\KVH_Scan_v4_x64\Nano-Ex.exe
          C:\ProgramData\KVH_Scan_v4_x64\Nano-Ex.exe
          3⤵
          • Suspicious use of SetThreadContext
          • Executes dropped EXE
          • Loads dropped DLL
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious behavior: MapViewOfSection
          • Suspicious use of WriteProcessMemory
          PID:1116
          • C:\Users\Admin\XCompiler.exe
            C:\Users\Admin\XCompiler.exe
            4⤵
            • Suspicious use of NtCreateUserProcessOtherParentProcess
            • Loads dropped DLL
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of WriteProcessMemory
            PID:3916
          • C:\ProgramData\KVH_Scan_v4_x64\Chime.exe
            C:\ProgramData\KVH_Scan_v4_x64\Chime.exe
            4⤵
            • Loads dropped DLL
            • System Location Discovery: System Language Discovery
            • Suspicious behavior: EnumeratesProcesses
            PID:4768
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      • Suspicious use of AdjustPrivilegeToken
      PID:2528

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          e577bc8.rbs

          • Path C:\Config.Msi\e577bc8.rbs
          • Size 8KB
          • SHA256 a648761ecde1901b2bdb5759ce6c33313861d7128994cd41c008b879681a049f
          • MD5 SHA1 SHA512 SSDEEP

          Chime.exe

          • Path C:\ProgramData\KVH_Scan_v4_x64\Chime.exe
          • Size 619KB
          • SHA256 adb8347dfa1b1df1ca2211fe4d7e82f27ced939f1bf3d52548e52bc9e23fc52c
          • MD5 SHA1 SHA512 SSDEEP

          Claet.chau

          • Path C:\Users\Admin\AppData\Local\Need\Claet.chau
          • Size 2.6MB
          • SHA256 159403168e1825d4a29b1d0cae4f7829cd3ee2b767b4ac6b56c476afd9c858ad
          • MD5 SHA1 SHA512 SSDEEP

          MSVCP110.dll

          • Path C:\Users\Admin\AppData\Local\Need\MSVCP110.dll
          • Size 645KB
          • SHA256 27f394ae01d12f851f1dee3632dee3c5afa1d267f7a96321d35fd43105b035ad
          • MD5 SHA1 SHA512 SSDEEP

          MSVCR110.dll

          • Path C:\Users\Admin\AppData\Local\Need\MSVCR110.dll
          • Size 829KB
          • SHA256 ae996edb9b050677c4f82d56092efdc75f0addc97a14e2c46753e2db3f6bd732
          • MD5 SHA1 SHA512 SSDEEP

          Nano-Ex.exe

          • Path C:\Users\Admin\AppData\Local\Need\Nano-Ex.exe
          • Size 38KB
          • SHA256 c2a2846f3775e641218ce24189e795acbac3562d7b2f0f27a4e08f43173898c1
          • MD5 SHA1 SHA512 SSDEEP

          Theasbroumfeem.zbbo

          • Path C:\Users\Admin\AppData\Local\Need\Theasbroumfeem.zbbo
          • Size 14KB
          • SHA256 1b1d08b399a519851e544a8954957e4837f5ff061f550d07ada66e6a91e2fb25
          • MD5 SHA1 SHA512 SSDEEP

          mfc110u.dll

          • Path C:\Users\Admin\AppData\Local\Need\mfc110u.dll
          • Size 5.4MB
          • SHA256 bcf00613efe2e4031926b44dfc6f9e8b259e87b1da00daeff0e70407c3714ae2
          • MD5 SHA1 SHA512 SSDEEP

          2A4A809.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\2A4A809.tmp
          • Size 40B
          • SHA256 1d1c568aee5e69a927c42e48c700af88d3ea605bd8e4eed0dd9abfb0cee1fe87
          • MD5 SHA1 SHA512

          F0A824F.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\F0A824F.tmp
          • Size 3.6MB
          • SHA256 f6a7174a8be90cbd9e82f0d38a1284200e3f7357f9286b9bfa1e80aaa6dba852
          • MD5 SHA1 SHA512 SSDEEP

          F0A824F.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\F0A824F.tmp
          • Size 3.6MB
          • SHA256 42c68b6f9461449a5da06ef930ec8f78bc66e559bdadc3bc08eed38022d1ee12
          • MD5 SHA1 SHA512 SSDEEP

          XCompiler.exe

          • Path C:\Users\Admin\XCompiler.exe
          • Size 2.2MB
          • SHA256 65e1a44427ebdb3ce67685746a9ccad8c7334aef0c502e9cbc2c30d5fe9e2652
          • MD5 SHA1 SHA512 SSDEEP

          e577bc7.msi

          • Path C:\Windows\Installer\e577bc7.msi
          • Size 5.0MB
          • SHA256 7adcc8466d2e071c926f0fdf9b5a601de304ef017df7d5cc0a1032b85783aad5
          • MD5 SHA1 SHA512 SSDEEP

          metadata-2

          • Path \??\GLOBALROOT\Device\HarddiskVolumeShadowCopy2\System Volume Information\SPP\metadata-2
          • Size 24.6MB
          • SHA256 c6d691edee89ae078efd5b105c4f58db485bbee62b5632ab1d0ad8a8f9fcf40b
          • MD5 SHA1 SHA512 SSDEEP

          {7c5abf37-d14d-4723-95eb-0546f423cebb}_OnDiskSnapshotProp

          • Path \??\Volume{113d7ab7-0000-0000-0000-d01200000000}\System Volume Information\SPP\OnlineMetadataCache\{7c5abf37-d14d-4723-95eb-0546f423cebb}_OnDiskSnapshotProp
          • Size 6KB
          • SHA256 a91cab7d1840baadc1859d2f13c3fc201108b048149ae60919121db86263f83b
          • MD5 SHA1 SHA512 SSDEEP

          memory/1116-58-0x00007FF958880000-0x00007FF9589FA000-memory.dmp

          memory/1116-61-0x00007FF958880000-0x00007FF9589FA000-memory.dmp

          memory/1116-65-0x00007FF958880000-0x00007FF9589FA000-memory.dmp

          memory/3916-75-0x00007FF96C140000-0x00007FF96C349000-memory.dmp

          memory/3916-67-0x00007FF700940000-0x00007FF7009F1000-memory.dmp

          memory/3916-74-0x000001C63EBC0000-0x000001C63EFC0000-memory.dmp

          memory/3916-72-0x00007FF700940000-0x00007FF7009F1000-memory.dmp

          memory/3916-76-0x00007FF96A040000-0x00007FF96A0FD000-memory.dmp

          memory/3916-81-0x00007FF700940000-0x00007FF7009F1000-memory.dmp

          memory/3916-77-0x00007FF969BE0000-0x00007FF969F54000-memory.dmp

          memory/3916-73-0x000001C63EBC0000-0x000001C63EFC0000-memory.dmp

          memory/4768-96-0x00000000750A0000-0x000000007521D000-memory.dmp

          memory/4768-94-0x00007FF96C140000-0x00007FF96C349000-memory.dmp

          memory/4844-82-0x000002A02B230000-0x000002A02B630000-memory.dmp

          memory/4844-78-0x000002A0296C0000-0x000002A0296CA000-memory.dmp

          memory/4844-84-0x00007FF96A040000-0x00007FF96A0FD000-memory.dmp

          memory/4844-83-0x00007FF96C140000-0x00007FF96C349000-memory.dmp

          memory/4844-85-0x00007FF969BE0000-0x00007FF969F54000-memory.dmp

          memory/5972-40-0x00007FF9587A0000-0x00007FF95891A000-memory.dmp