Overview

overview

10

Static

static

10

2026-07-01...ry.exe

windows10-2004-x64

10

2026-07-01...ry.exe

windows11-ltsc_2024-x64

10

Analysis

  • max time kernel
    113s
  • max time network
    151s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260629-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260629-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    01/07/2026, 07:51

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General

  • Target
    2026-07-01_b989324cca9bffe1a9f57d5470f1a626_elex_wannacry.exe
  • Size 94KB
  • Sample260701-jp4bcabw31
  • SHA256 b1b73818a50e5ab2d1549b8285fcaa6dd48a43647ab20ee10c9b754722f20763
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
adwarediscoveryjukopersistenceransomwarespywaretrojan

Malware Config

Signatures

  • Family: Juko

    Juko is a trojan written in C++.

    trojanjuko
  • Detects Juko 7 IoCs
  • 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
  • Executes dropped EXE 2 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
    persistence
  • Enumerates connected drives 3 TTPs 2 IoCs

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

  • 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.

    discovery
  • System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 4 IoCs

    Adversaries may check for Internet connectivity on compromised systems.

    discovery
  • 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 registry class 38 IoCs
  • Runs ping.exe 1 TTPs 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 56 IoCs
  • Suspicious use of FindShellTrayWindow 53 IoCs
  • Suspicious use of SendNotifyMessage 40 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 7 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\2026-07-01_b989324cca9bffe1a9f57d5470f1a626_elex_wannacry.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-07-01_b989324cca9bffe1a9f57d5470f1a626_elex_wannacry.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:5724
    • C:\Users\Admin\AppData\Roaming\Mozilla\WINWORD.exe
      "C:\Users\Admin\AppData\Roaming\Mozilla\WINWORD.exe" -r
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:6088
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /c ping 127.0.0.1 -n 2&del "C:\Users\Admin\AppData\Roaming\Mozilla\WINWORD.exe"&ping 127.0.0.1 -n 2&rename "C:\Users\Admin\AppData\Roaming\Mozilla\00002246" WINWORD.exe&ping 127.0.0.1 -n 2&"C:\Users\Admin\AppData\Roaming\Mozilla\WINWORD.exe" \r
        3⤵
        • System Location Discovery: System Language Discovery
        • System Network Configuration Discovery: Internet Connection Discovery
        • Suspicious use of WriteProcessMemory
        PID:3264
        • C:\Windows\SysWOW64\PING.EXE
          ping 127.0.0.1 -n 2
          4⤵
          • System Location Discovery: System Language Discovery
          • System Network Configuration Discovery: Internet Connection Discovery
          • Runs ping.exe
          PID:5000
        • C:\Windows\SysWOW64\PING.EXE
          ping 127.0.0.1 -n 2
          4⤵
          • System Location Discovery: System Language Discovery
          • System Network Configuration Discovery: Internet Connection Discovery
          • Runs ping.exe
          PID:3112
        • C:\Windows\SysWOW64\PING.EXE
          ping 127.0.0.1 -n 2
          4⤵
          • System Location Discovery: System Language Discovery
          • System Network Configuration Discovery: Internet Connection Discovery
          • Runs ping.exe
          PID:4792
        • C:\Users\Admin\AppData\Roaming\Mozilla\WINWORD.exe
          "C:\Users\Admin\AppData\Roaming\Mozilla\WINWORD.exe" \r
          4⤵
          • Executes dropped EXE
          • Adds Run key to start application
          • System Location Discovery: System Language Discovery
          PID:5560
  • C:\Windows\system32\sihost.exe
    sihost.exe
    1⤵
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of WriteProcessMemory
    PID:3520
    • 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:4412
  • 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:1648
  • 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:1860

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        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

        00002246
        • Path C:\Users\Admin\AppData\Roaming\Mozilla\00002246
        • Size 94KB
        • SHA256 b1cbd9641f61ca0b331c1a3640bcfd6fcae2d2bd4273fac7ae2d0e6314876269
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        WINWORD.exe
        • Path C:\Users\Admin\AppData\Roaming\Mozilla\WINWORD.exe
        • Size 94KB
        • SHA256 b1b73818a50e5ab2d1549b8285fcaa6dd48a43647ab20ee10c9b754722f20763
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        memory/1648-202-0x00000208B6C20000-0x00000208B6D1F000-memory.dmp
        Download

        memory/1648-200-0x00000208B6C20000-0x00000208B6D1F000-memory.dmp
        Download

        memory/1860-31-0x000001F302E80000-0x000001F302F80000-memory.dmp
        Download

        memory/1860-64-0x000001F314200000-0x000001F314220000-memory.dmp
        Download

        memory/1860-30-0x000001F302900000-0x000001F302920000-memory.dmp
        Download

        memory/1860-20-0x000001F300210000-0x000001F300310000-memory.dmp
        Download

        memory/1860-18-0x000001F300210000-0x000001F300310000-memory.dmp
        Download

        memory/1860-42-0x000001F302C60000-0x000001F302C80000-memory.dmp
        Download

        memory/5560-16-0x0000000000400000-0x000000000042B000-memory.dmp
        Download

        memory/5560-15-0x0000000000400000-0x000000000042B000-memory.dmp
        Download

        memory/5724-0-0x0000000000400000-0x000000000042B000-memory.dmp
        Download

        memory/5724-10-0x0000000000400000-0x000000000042B000-memory.dmp
        Download

        memory/6088-12-0x0000000000400000-0x000000000042B000-memory.dmp
        Download