Analysis

  • max time kernel
    148s
  • max time network
    151s
  • platform
    windows11-21h2_x64
  • resource
    win11-20260513-en
  • resource tags

    arch:x64arch:x86image:win11-20260513-enlocale:en-usos:windows11-21h2-x64systemwindows
  • submitted
    27/05/2026, 12:16

General

  • Target
    Setup-VirtualPrinter-Client.exe
  • Size 11.5MB
  • Sample260527-pfsfdads2q
  • SHA256 b961ccef4189c379ba4a61319bad26a05a846959f4796ac205eea59ba9d32415
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Event Triggered Execution: Component Object Model Hijacking 1 TTPs

    Adversaries may establish persistence by executing malicious content triggered by hijacked references to Component Object Model (COM) objects.

  • Executes dropped EXE 7 IoCs
  • Loads dropped DLL 5 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Badlisted process makes network request 3 IoCs

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

  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Enumerates connected drives 3 TTPs 23 IoCs

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

  • Drops file in System32 directory 2 IoCs
  • Drops file in Program Files directory 19 IoCs
  • Drops file in Windows directory 18 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 7 IoCs

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

  • Inno Setup is an open-source installation builder for Windows applications. 3 IoCs

    Inno Setup installer

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

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

  • Modifies data under HKEY_USERS 3 IoCs
  • Modifies registry class 39 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 4 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 9 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\Setup-VirtualPrinter-Client.exe
    "C:\Users\Admin\AppData\Local\Temp\Setup-VirtualPrinter-Client.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2156
    • C:\Users\Admin\AppData\Local\Temp\is-PQT75.tmp\Setup-VirtualPrinter-Client.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-PQT75.tmp\Setup-VirtualPrinter-Client.tmp" /SL5="$60096,10982159,798720,C:\Users\Admin\AppData\Local\Temp\Setup-VirtualPrinter-Client.exe"
      2⤵
      • Executes dropped EXE
      • Drops file in Program Files directory
      • System Location Discovery: System Language Discovery
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of WriteProcessMemory
      PID:4420
      • C:\Windows\SysWOW64\msiexec.exe
        "msiexec.exe" /i "C:\Users\Admin\AppData\Local\Temp\is-DTIPG.tmp\Setup-VP-Client.msi" ALLUSERS=1 /qb+
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of FindShellTrayWindow
        PID:4992
      • C:\Program Files (x86)\Setup Virtual Printer Client\unins000.exe
        "C:\Program Files (x86)\Setup Virtual Printer Client\unins000.exe" /VERYSILENT /noinstancecheck
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:1684
        • C:\Users\Admin\AppData\Local\Temp\iu-14D2N.tmp\_unins.tmp
          "C:\Users\Admin\AppData\Local\Temp\iu-14D2N.tmp\_unins.tmp" /SECONDPHASE="C:\Program Files (x86)\Setup Virtual Printer Client\unins000.exe" /FIRSTPHASEWND=$5011A /VERYSILENT /noinstancecheck
          4⤵
          • Executes dropped EXE
          • Drops file in Program Files directory
          • System Location Discovery: System Language Discovery
          • Suspicious use of FindShellTrayWindow
          PID:2748
  • C:\Windows\system32\msiexec.exe
    C:\Windows\system32\msiexec.exe /V
    1⤵
    • Adds Run key to start application
    • Badlisted process makes network request
    • Enumerates connected drives
    • Drops file in System32 directory
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • Modifies data under HKEY_USERS
    • Modifies registry class
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:984
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:4424
    • C:\Windows\System32\MsiExec.exe
      C:\Windows\System32\MsiExec.exe -Embedding 8179AF64D9CDB13BA76021C8A0D1CD99
      2⤵
        PID:3332
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 8A2076187A20609D2B11B1BB23BB7D78
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:4728
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 397B7DA4FA4DA55F7E8C07A70E5F5B42 E Global\MSI0000
        2⤵
        • Loads dropped DLL
        • Drops file in Windows directory
        • System Location Discovery: System Language Discovery
        • Suspicious use of AdjustPrivilegeToken
        PID:3748
      • C:\Windows\system32\vpprint.exe
        "C:\Windows\system32\vpprint.exe"
        2⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Drops file in System32 directory
        • Suspicious use of SetWindowsHookEx
        PID:4792
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      • Suspicious use of AdjustPrivilegeToken
      PID:3392
    • C:\Program Files\Common Files\FabulaTech\Netlink 3\ftnlsv.exe
      "C:\Program Files\Common Files\FabulaTech\Netlink 3\ftnlsv.exe"
      1⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Drops file in Program Files directory
      PID:1116
    • C:\Windows\system32\vpprint.exe
      vpprint.exe
      1⤵
      • Executes dropped EXE
      • Suspicious use of SetWindowsHookEx
      PID:2312
    • C:\Program Files\Common Files\FabulaTech\Netlink 3\ftnliu.exe
      "C:\Program Files\Common Files\FabulaTech\Netlink 3\ftnliu.exe"
      1⤵
      • Executes dropped EXE
      PID:4944
    • C:\Windows\system32\svchost.exe
      C:\Windows\system32\svchost.exe -k PrintWorkflow -s PrintWorkflowUserSvc
      1⤵
        PID:2352

      Network

            MITRE ATT&CK Enterprise v16

            Replay Monitor

            Loading Replay Monitor...

            Downloads

            e58a0b3.rbs

            • Path C:\Config.Msi\e58a0b3.rbs
            • Size 2.0MB
            • SHA256 2b8cb1ed8bc2ebdcea2cc617ffd50e78eafa87d898faa5229f6e8e3543a4214d
            • MD5 SHA1 SHA512 SSDEEP TLSH

            unins000.dat

            • Path C:\Program Files (x86)\Setup Virtual Printer Client\unins000.dat
            • Size 8KB
            • SHA256 fc70f806dcff71e24336fffb6b9324c6e2ce36e7d5abb73e8e15a9780678c9fc
            • MD5 SHA1 SHA512 SSDEEP TLSH

            unins000.exe

            • Path C:\Program Files (x86)\Setup Virtual Printer Client\unins000.exe
            • Size 3.3MB
            • SHA256 07f0f76b3faf9a3a72e5022e682e6686f964cdf5822f0018ab276aff52dbc5ef
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ftdcvproxy.json

            • Path C:\Program Files\Common Files\FabulaTech\Netlink 3\ftdcvproxy.json
            • Size 279B
            • SHA256 4ed8ca0d545a22db4c67ef2fbcae0ff691315ed15b2277d067fac810aec28786
            • MD5 SHA1 SHA512 TLSH

            ftnlapi.dll

            • Path C:\Program Files\Common Files\FabulaTech\Netlink 3\ftnlapi.dll
            • Size 2.0MB
            • SHA256 6c25d0a6595c69426bb131a2633b9f7724e9f77ccfa71bea0cb2910f250af2b1
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ftnliu.exe

            • Path C:\Program Files\Common Files\FabulaTech\Netlink 3\ftnliu.exe
            • Size 99KB
            • SHA256 0c6d5b6f206d299245eedb3f5489b8fa7d4bbf0bb79b6c20f36d6c7533c9bfd7
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ftnlsv.exe

            • Path C:\Program Files\Common Files\FabulaTech\Netlink 3\ftnlsv.exe
            • Size 708KB
            • SHA256 13fe320cb1e5169596c4de2bc014a146ed9831930808c41573381e7db4429e04
            • MD5 SHA1 SHA512 SSDEEP TLSH

            Setup-VP-Client.msi

            • Path C:\Users\Admin\AppData\Local\Temp\is-DTIPG.tmp\Setup-VP-Client.msi
            • Size 8.0MB
            • SHA256 d3375a5baae4fc7686793c928de1df1feaff8af7cbb097a50be4036629c57497
            • MD5 SHA1 SHA512 SSDEEP TLSH

            Setup-VirtualPrinter-Client.tmp

            • Path C:\Users\Admin\AppData\Local\Temp\is-PQT75.tmp\Setup-VirtualPrinter-Client.tmp
            • Size 3.3MB
            • SHA256 e8819b199fa7adb306b939f325e363abe01194cd0d5fcb24e8478bc71313334a
            • MD5 SHA1 SHA512 SSDEEP TLSH

            MSIDF02.tmp

            • Path C:\Windows\Installer\MSIDF02.tmp
            • Size 211KB
            • SHA256 c8d190d5be1efd2d52f72a72ae9dfa3940ab3faceb626405959349654fe18b74
            • MD5 SHA1 SHA512 SSDEEP TLSH

            MSIE0E7.tmp

            • Path C:\Windows\Installer\MSIE0E7.tmp
            • Size 1.8MB
            • SHA256 5beeb6322255bc037c1fac921f77fea44e44905739e08d7fad2f7f41bdf4ebb6
            • MD5 SHA1 SHA512 SSDEEP TLSH

            vpprint.exe

            • Path C:\Windows\system32\vpprint.exe
            • Size 3.9MB
            • SHA256 c10089c17b54cb18aa6c7fea5a293897f94518bf9e43fa31645bd1f2ad23c437
            • MD5 SHA1 SHA512 SSDEEP TLSH

            metadata-2

            • Path \??\GLOBALROOT\Device\HarddiskVolumeShadowCopy2\System Volume Information\SPP\metadata-2
            • Size 24.6MB
            • SHA256 8bad29eb2764e01ac127aa240d6f1b5dc362c261416891a0cc07748a87c8a815
            • MD5 SHA1 SHA512 SSDEEP TLSH

            {4aff4ace-0cf3-44d6-b100-c87c5338d2e9}_OnDiskSnapshotProp

            • Path \??\Volume{681e74ae-0000-0000-0000-d01200000000}\System Volume Information\SPP\OnlineMetadataCache\{4aff4ace-0cf3-44d6-b100-c87c5338d2e9}_OnDiskSnapshotProp
            • Size 6KB
            • SHA256 d2bbab3de8913633411661621938f37052cd0b91c18b9ed7a236eeee78556378
            • MD5 SHA1 SHA512 SSDEEP TLSH

            memory/1684-110-0x0000000000DE0000-0x0000000001139000-memory.dmp

            memory/2156-114-0x0000000000F60000-0x0000000001031000-memory.dmp

            memory/2156-0-0x0000000000F60000-0x0000000001031000-memory.dmp

            memory/2156-14-0x0000000000F60000-0x0000000001031000-memory.dmp

            memory/2748-112-0x0000000000130000-0x0000000000489000-memory.dmp

            memory/4420-18-0x0000000000B90000-0x0000000000EE9000-memory.dmp

            memory/4420-97-0x0000000000B90000-0x0000000000EE9000-memory.dmp

            memory/4420-42-0x0000000000B90000-0x0000000000EE9000-memory.dmp

            memory/4420-24-0x0000000000B90000-0x0000000000EE9000-memory.dmp

            memory/4420-15-0x0000000000B90000-0x0000000000EE9000-memory.dmp

            memory/4420-16-0x00000000034A0000-0x00000000034A1000-memory.dmp

            memory/4420-5-0x00000000034A0000-0x00000000034A1000-memory.dmp

            memory/4420-113-0x0000000000B90000-0x0000000000EE9000-memory.dmp

            memory/4792-98-0x0000027B0ABF0000-0x0000027B0AFAE000-memory.dmp