Analysis

  • user interaction
    yes
  • max time kernel
    127s
  • max time network
    95s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260513-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    21/07/2026, 15:24

General

  • Target
    uzsetup.exe
  • Size 7.4MB
  • Sample260721-stem8abf85
  • SHA256 d7c0f87b6a65a8ec7e387a6b7a6f7a6effcb1d1d98ff6abd12753ed0c1bae143
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Drops startup file 1 IoCs
  • 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 3 IoCs
  • Loads dropped DLL 7 IoCs
  • Checks installed software on the system 1 TTPs

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

  • Drops file in Program Files directory 56 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • 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

  • Modifies registry class 40 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of FindShellTrayWindow 7 IoCs
  • Suspicious use of SendNotifyMessage 6 IoCs
  • Suspicious use of SetWindowsHookEx 10 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\uzsetup.exe
    "C:\Users\Admin\AppData\Local\Temp\uzsetup.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2916
    • C:\Users\Admin\AppData\Local\Temp\is-49TIU.tmp\uzsetup.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-49TIU.tmp\uzsetup.tmp" /SL5="$80060,7495163,56832,C:\Users\Admin\AppData\Local\Temp\uzsetup.exe"
      2⤵
      • Checks computer location settings
      • Drops startup file
      • Executes dropped EXE
      • Drops file in Program Files directory
      • System Location Discovery: System Language Discovery
      • Modifies registry class
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of WriteProcessMemory
      PID:984
      • C:\Windows\SysWOW64\regsvr32.exe
        "C:\Windows\system32\regsvr32.exe" /s "C:\Program Files (x86)\UltimateZip\uzshlex.dll"
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Modifies registry class
        PID:3944
      • C:\Windows\SysWOW64\regsvr32.exe
        "C:\Windows\system32\regsvr32.exe" /s "C:\Program Files (x86)\UltimateZip\uzshlex64.dll"
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:3636
        • C:\Windows\system32\regsvr32.exe
          /s "C:\Program Files (x86)\UltimateZip\uzshlex64.dll"
          4⤵
          • Loads dropped DLL
          • Modifies registry class
          PID:1732
      • C:\Windows\SysWOW64\NOTEPAD.EXE
        "C:\Windows\system32\NOTEPAD.EXE" C:\Program Files (x86)\UltimateZip\readme.txt
        3⤵
        • System Location Discovery: System Language Discovery
        PID:2472
      • C:\Program Files (x86)\UltimateZip\uzip.exe
        "C:\Program Files (x86)\UltimateZip\uzip.exe"
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Drops file in Program Files directory
        • System Location Discovery: System Language Discovery
        • Modifies registry class
        • Suspicious use of SetWindowsHookEx
        PID:4468
  • C:\PROGRA~2\ULTIMA~1\uzqkst.exe
    C:\PROGRA~2\ULTIMA~1\uzqkst.exe
    1⤵
    • Executes dropped EXE
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of SetWindowsHookEx
    PID:4768

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        English.lng

        • Path C:\Program Files (x86)\UltimateZip\English.lng
        • Size 152KB
        • SHA256 edad582884d44a8fd45b6916e9c34e3af4fddaadc28ed2b4754369dd0174d04c
        • MD5 SHA1 SHA512 SSDEEP TLSH

        cabinet.dll

        • Path C:\Program Files (x86)\UltimateZip\cabinet.dll
        • Size 58KB
        • SHA256 a6db369b7782c2773361d878ef74ef1d9d817ae6f2bfca5c0569ec58f4dc7245
        • MD5 SHA1 SHA512 SSDEEP TLSH

        readme.txt

        • Path C:\Program Files (x86)\UltimateZip\readme.txt
        • Size 11KB
        • SHA256 d587566295dd44567e055c61c72655fbe22821538365d8773f0cf176770e9ec8
        • MD5 SHA1 SHA512 SSDEEP TLSH

        unrar.dll

        • Path C:\Program Files (x86)\UltimateZip\unrar.dll
        • Size 222KB
        • SHA256 3a9779ae106d5cb5725ef8354136d6a34133522b0ddf6ee2bc035e6e1e433551
        • MD5 SHA1 SHA512 SSDEEP TLSH

        uzip.exe

        • Path C:\Program Files (x86)\UltimateZip\uzip.exe
        • Size 8.1MB
        • SHA256 2f189c56906880da5458ed051864f9df935ad77c208a0eaa915c3ebb50fbda09
        • MD5 SHA1 SHA512 SSDEEP TLSH

        uzqkst.exe

        • Path C:\Program Files (x86)\UltimateZip\uzqkst.exe
        • Size 2.0MB
        • SHA256 1aca0d85ffc9ad1bb9dbfaddc9c6a4a7d63d1b3ef7e0da44deb2093143682a5b
        • MD5 SHA1 SHA512 SSDEEP TLSH

        uzshlex.dll

        • Path C:\Program Files (x86)\UltimateZip\uzshlex.dll
        • Size 1.6MB
        • SHA256 b6e8889505d7ff457405ff726e01e8e351f2b05cc9c4c3bf641d37bd51c4182c
        • MD5 SHA1 SHA512 SSDEEP TLSH

        uzshlex64.dll

        • Path C:\Program Files (x86)\UltimateZip\uzshlex64.dll
        • Size 2.3MB
        • SHA256 dfa730187c0a92fb221aa7fdc1a6209f9003cb378ece1300747587bfbc7c098d
        • MD5 SHA1 SHA512 SSDEEP TLSH

        uzsetup.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\is-49TIU.tmp\uzsetup.tmp
        • Size 692KB
        • SHA256 e442e83c27e94bc37eb6c02411a88edd8cb83777d50312b9ef7bfc214c4cc7b2
        • MD5 SHA1 SHA512 SSDEEP TLSH

        uz.config.ini

        • Path C:\Users\Admin\AppData\Roaming\UltimateZip\uz.config.ini
        • Size 68B
        • SHA256 9a157588d8e0cc577d075276caa66a239d9587409c97909e02ceb1827dc56597
        • MD5 SHA1 SHA512 TLSH

        uz.config.ini

        • Path C:\Users\Admin\AppData\Roaming\UltimateZip\uz.config.ini
        • Size 86B
        • SHA256 f126c35395a61acd507e2f76b10996233533168098c9fbba99f9d3f930805bc5
        • MD5 SHA1 SHA512 TLSH

        uz.config.ini

        • Path C:\Users\Admin\AppData\Roaming\UltimateZip\uz.config.ini
        • Size 223B
        • SHA256 5f14506a70f0c7e617f2f2c7af61308ece4c7794ec0ae083c5b098cad32df25d
        • MD5 SHA1 SHA512 TLSH

        memory/984-14-0x0000000000400000-0x00000000004BD000-memory.dmp

        memory/984-12-0x0000000000660000-0x0000000000661000-memory.dmp

        memory/984-11-0x0000000000400000-0x00000000004BD000-memory.dmp

        memory/984-124-0x0000000000400000-0x00000000004BD000-memory.dmp

        memory/984-115-0x0000000000400000-0x00000000004BD000-memory.dmp

        memory/984-5-0x0000000000660000-0x0000000000661000-memory.dmp

        memory/1732-111-0x0000000002210000-0x0000000002468000-memory.dmp

        memory/2916-0-0x0000000000400000-0x0000000000414000-memory.dmp

        memory/2916-125-0x0000000000400000-0x0000000000414000-memory.dmp

        memory/2916-10-0x0000000000400000-0x0000000000414000-memory.dmp

        memory/3944-126-0x0000000002050000-0x000000000227A000-memory.dmp

        memory/3944-106-0x0000000002050000-0x000000000227A000-memory.dmp

        memory/3944-105-0x0000000002222000-0x0000000002224000-memory.dmp

        memory/3944-104-0x0000000002050000-0x000000000227A000-memory.dmp

        memory/4468-208-0x00000000007A0000-0x0000000001027000-memory.dmp

        memory/4468-210-0x00000000007A0000-0x0000000001027000-memory.dmp

        memory/4468-213-0x00000000007A0000-0x0000000001027000-memory.dmp

        memory/4768-139-0x0000000000ED0000-0x00000000010E2000-memory.dmp