Overview

overview

8

Static

static

3

Doku.exe

windows10-2004-x64

6

Doku.exe

windows11-ltsc_2024-x64

8

Resubmissions

09/07/2026, 05:48

260709-ghkvbady7w6

09/07/2026, 05:40

260709-gc411ady6t8

09/07/2026, 05:36

260709-gavdsady5t6

Analysis

  • user interaction
    yes
  • max time kernel
    150s
  • max time network
    149s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260706-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260706-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    09/07/2026, 05:40

Sharing

Copy URL Twitter E-mail
Report Analysis Logs

General

  • Target
    Doku.exe
  • Size 35.4MB
  • Sample260709-gc411ady6t
  • SHA256 57c9c02ef7a1560a13856376bf73f1596300e4e33c77764638befc93fbe79e9e
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
8/10
adwarepersistenceransomwarespyware

Malware Config

Signatures

  • Boot or Logon Autostart Execution: Active Setup 2 TTPs 1 IoCs

    Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.

    persistence
  • Enumerates connected drives 3 TTPs 2 IoCs

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

  • Drops file in Program Files directory 2 IoCs
  • Checks SCSI registry key(s) 3 TTPs 62 IoCs

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

  • Modifies Internet Explorer settings 1 TTPs 1 IoCs
    adwarespyware
  • Modifies data under HKEY_USERS 4 IoCs
  • Modifies registry class 38 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 40 IoCs
  • Suspicious use of FindShellTrayWindow 58 IoCs
  • Suspicious use of SendNotifyMessage 46 IoCs
  • Suspicious use of SetWindowsHookEx 4 IoCs
  • Suspicious use of WriteProcessMemory 1 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

    persistence
  • Uses Volume Shadow Copy WMI provider

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

    ransomware
  • Uses Volume Shadow Copy service COM API

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

    ransomware

Processes

  • C:\Users\Admin\AppData\Local\Temp\Doku.exe
    "C:\Users\Admin\AppData\Local\Temp\Doku.exe"
    1⤵
    • Drops file in Program Files directory
    PID:4620
  • C:\Windows\system32\sihost.exe
    sihost.exe
    1⤵
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of WriteProcessMemory
    PID:1356
    • C:\Windows\explorer.exe
      explorer.exe /LOADSAVEDWINDOWS
      2⤵
      • Boot or Logon Autostart Execution: Active Setup
      • Enumerates connected drives
      • Checks SCSI registry key(s)
      • Modifies Internet Explorer settings
      • Modifies registry class
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      • Suspicious use of SetWindowsHookEx
      PID:3984
  • C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\SearchHost.exe
    "C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\SearchHost.exe" -ServerName:CortanaUI.AppXstmwaab17q5s3y22tp6apqz7a45vwv65.mca
    1⤵
    • Modifies registry class
    • Suspicious use of SetWindowsHookEx
    PID:3744
  • C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe
    "C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe" -ServerName:App.AppXywbrabmsek0gm3tkwpr5kwzbs55tkqay.mca
    1⤵
    • Modifies registry class
    • Suspicious use of SetWindowsHookEx
    PID:3116
  • C:\Windows\system32\LogonUI.exe
    "LogonUI.exe" /flags:0x4 /state0:0xa3a1c855 /state1:0x41c64e6d
    1⤵
    • Modifies data under HKEY_USERS
    • Suspicious use of SetWindowsHookEx
    PID:2520
  • C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k GPSvcGroup
    1⤵
      PID:2536
    • C:\Windows\System32\svchost.exe
      C:\Windows\System32\svchost.exe -k CameraMonitor
      1⤵
        PID:4980

      Network

            MITRE ATT&CK Enterprise v16

            Replay Monitor

            Loading Replay Monitor...

            Downloads

            prep_Activatable Class_Hermes_perf.cache
            • Path C:\Users\Admin\AppData\Local\Packages\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\TempState\prep_Activatable Class_Hermes_perf.cache
            • Size 599B
            • SHA256 b536a3dae9ea5c69081f0491eed829e3b57e32401fdf49a63031bcd6b20e6fdb
            • MD5 SHA1 SHA512 TLSH
            Submit Download

            memory/3744-69-0x00000289872A0000-0x00000289872C0000-memory.dmp
            Download

            memory/3744-55-0x0000028987040000-0x0000028987060000-memory.dmp
            Download

            memory/3744-46-0x0000028983800000-0x0000028983900000-memory.dmp
            Download

            memory/3744-91-0x0000028997820000-0x0000028997840000-memory.dmp
            Download

            memory/3744-56-0x0000028987460000-0x0000028987560000-memory.dmp
            Download

            memory/3984-255-0x000000000E610000-0x000000000EE8B000-memory.dmp
            Download

            memory/3984-253-0x00000000041E0000-0x00000000041E1000-memory.dmp
            Download

            memory/3984-252-0x000000000E610000-0x000000000EE8B000-memory.dmp
            Download

            memory/3984-221-0x000000000E610000-0x000000000EE8B000-memory.dmp
            Download

            memory/4620-4-0x0000018F00500000-0x0000018F00530000-memory.dmp
            Download

            memory/4620-0-0x0000018F014B0000-0x0000018F02340000-memory.dmp
            Download

            memory/4620-8-0x0000018F00430000-0x0000018F00450000-memory.dmp
            Download

            memory/4620-234-0x0000018F02730000-0x0000018F02760000-memory.dmp
            Download

            memory/4620-246-0x0000018F02790000-0x0000018F027B0000-memory.dmp
            Download

            memory/4620-242-0x0000018F005F0000-0x0000018F00600000-memory.dmp
            Download

            memory/4620-238-0x0000018F02760000-0x0000018F02780000-memory.dmp
            Download

            memory/4620-12-0x0000018F00550000-0x0000018F005F0000-memory.dmp
            Download

            memory/4620-21-0x0000018F026A0000-0x0000018F026C0000-memory.dmp
            Download

            memory/4620-16-0x0000018F02650000-0x0000018F026A0000-memory.dmp
            Download