Overview

overview

6

Static

static

1

UVKPortable.exe

windows11-21h2-x64

6

Resubmissions

11/10/2026, 11:20

261011-nfenvahw6z6

11/10/2026, 11:17

261011-ndtd8agg436

Analysis

  • user interaction
    yes
  • max time kernel
    30s
  • max time network
    34s
  • platform
    windows11-21h2_x64
  • resource
    win11-20260911-en
  • resource tags

    arch:x64arch:x86image:win11-20260911-enlocale:en-usos:windows11-21h2-x64systemwindows
  • submitted
    11/10/2026, 11:17

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General

  • Target
    UVKPortable.exe
  • Size 27.8MB
  • Sample261011-ndtd8agg43
  • SHA256 429a79cf58fc2adf1c6f63c53a544f932f27d33da0ef6564d674a41a1f4aab27
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
6/10
adwarebootkitdefense_evasiondiscoverypersistencespyware

Malware Config

Signatures

  • Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs

    Bootkits write to the MBR to gain persistence at a level below the operating system.

    bootkitpersistence
  • Checks installed software on the system 1 TTPs

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

    discovery
  • Drops file in Program Files directory 35 IoCs
  • Executes dropped EXE 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Reads the TCP/IP host and domain name from the registry 1 TTPs 2 IoCs

    The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.

    discovery
  • 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.

    discovery
  • Modifies Control Panel 3 IoCs
    defense_evasion
  • Modifies Internet Explorer settings 1 TTPs 6 IoCs
    adwarespyware
  • Modifies registry class 53 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 57 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of SendNotifyMessage 1 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\UVKPortable.exe
    "C:\Users\Admin\AppData\Local\Temp\UVKPortable.exe"
    1⤵
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    • Modifies Internet Explorer settings
    • Modifies registry class
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1620
    • C:\Program Files\UVK - Ultra Virus Killer\RebootExecx64.exe
      "C:\Program Files\UVK - Ultra Virus Killer\RebootExecx64.exe" /PostUpdateActions "C:\Program Files\UVK - Ultra Virus Killer"
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:4796
    • C:\Program Files\UVK - Ultra Virus Killer\UVK_en.exe
      "C:\Program Files\UVK - Ultra Virus Killer\UVK_en.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:356
      • C:\Program Files\UVK - Ultra Virus Killer\UVK_en64.exe
        "C:\Program Files\UVK - Ultra Virus Killer\UVK_en64.exe"
        3⤵
        • Writes to the Master Boot Record (MBR)
        • Drops file in Program Files directory
        • Executes dropped EXE
        • Reads the TCP/IP host and domain name from the registry
        • Modifies Control Panel
        • Suspicious behavior: GetForegroundWindowSpam
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of FindShellTrayWindow
        PID:2392
  • C:\Windows\System32\PickerHost.exe
    C:\Windows\System32\PickerHost.exe -Embedding
    1⤵
    • Suspicious use of SetWindowsHookEx
    PID:5104

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        RebootExecx64.exe
        • Path C:\Program Files\UVK - Ultra Virus Killer\RebootExecx64.exe
        • Size 1.3MB
        • SHA256 6d69e2e8609ceae230c616f1f748239575bdca4b373a7c9d80b4079844d3670d
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        UVK_en.exe
        • Path C:\Program Files\UVK - Ultra Virus Killer\UVK_en.exe
        • Size 3.4MB
        • SHA256 b852c8bbd828609b6ebfa8c3555a72902a363e5decc475a1832cb7f1c11cba14
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        UVK_en64.exe
        • Path C:\Program Files\UVK - Ultra Virus Killer\UVK_en64.exe
        • Size 3.8MB
        • SHA256 cbf4a8d458d52d350ea26bc6e84748cc1d954caf9f1b09c98292081e11678b0a
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        msizapw.exe
        • Path C:\Program Files\UVK - Ultra Virus Killer\cleanup_tool\msizapw.exe
        • Size 92KB
        • SHA256 c8089b1734f68420e912978ac0dd29d8772b1f527d2bffbaaa9d3fad9f4051e5
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        deflogo.png
        • Path C:\Program Files\UVK - Ultra Virus Killer\deflogo.png
        • Size 235KB
        • SHA256 80def2ec31ecf4ca333c02528e6fc966d52c3c9a045494ab66677d402c7c47e8
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        uvkres.dll
        • Path C:\Program Files\UVK - Ultra Virus Killer\uvkres.dll
        • Size 2.3MB
        • SHA256 b90d04874cd5ab13845dea79b4dada5e5b691a775493cb2c2c22dd4a81ffcf89
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        License.htm
        • Path C:\Users\Admin\AppData\Local\Temp\UVKSetup\License.htm
        • Size 4KB
        • SHA256 5f1779fe62bcaf35df56f87cb7bad7a7351dc8d5786e75085e4c1cc1022aa4d4
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download