Overview

overview

10

Static

static

10

ech0-ac.exe

windows10-2004-x64

10

ech0-ac.exe

windows11-ltsc_2024-x64

10

Analysis

  • max time kernel
    149s
  • max time network
    119s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260629-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260629-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    05/07/2026, 16:27

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General

  • Target
    ech0-ac.exe
  • Size 71KB
  • Sample260705-tybmsshx5j
  • SHA256 9acd419486311b42e861cd68057db896919a74152e4c60a053c7c9e2d8e5cf6e
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
adwaredefense_evasionexecutionxwormpersistenceransomwareratspywaretrojan

Malware Config

Extracted

Family

  • xworm

C2

  • dnaun-188-27-253-146.run.pinggy-free.link:46769

  • :123

Attributes
  • Install_directory

    %ProgramData%

  • install_file

    HealthService.exe

Signatures

  • Family: Xworm

    Xworm is a remote access trojan written in C#.

    trojanratxworm
  • Detect Xworm Payload 2 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
  • Drops startup file 2 IoCs
  • Executes dropped EXE 3 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).

  • Checks SCSI registry key(s) 3 TTPs 62 IoCs

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

  • Delays execution with timeout.exe 1 IoCs
    defense_evasion
  • Modifies Internet Explorer settings 1 TTPs 1 IoCs
    adwarespyware
  • Modifies registry class 38 IoCs
  • Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

    persistenceexecution
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 60 IoCs
  • Suspicious use of FindShellTrayWindow 54 IoCs
  • Suspicious use of SendNotifyMessage 40 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 5 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\ech0-ac.exe
    "C:\Users\Admin\AppData\Local\Temp\ech0-ac.exe"
    1⤵
    • Drops startup file
    • Adds Run key to start application
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1172
    • C:\Windows\System32\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "HealthService" /tr "C:\ProgramData\HealthService.exe"
      2⤵
      • Scheduled Task/Job: Scheduled Task
      PID:4880
    • C:\Windows\System32\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /delete /f /tn "HealthService"
      2⤵
        PID:3708
      • C:\Windows\system32\cmd.exe
        C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp65FF.tmp.bat""
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:3440
        • C:\Windows\system32\timeout.exe
          timeout 3
          3⤵
          • Delays execution with timeout.exe
          PID:5556
    • C:\PROGRA~3\HealthService.exe
      C:\PROGRA~3\HEALTH~1.EXE
      1⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:944
    • C:\ProgramData\HealthService.exe
      C:\ProgramData\HealthService.exe
      1⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:5328
    • C:\ProgramData\HealthService.exe
      "C:\ProgramData\HealthService.exe"
      1⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:4484
    • C:\Windows\system32\sihost.exe
      sihost.exe
      1⤵
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of WriteProcessMemory
      PID:4488
      • 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:5428
    • 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:2896
    • 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:3452

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

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          Downloads

          HealthService.exe
          • Path C:\ProgramData\HealthService.exe
          • Size 71KB
          • SHA256 9acd419486311b42e861cd68057db896919a74152e4c60a053c7c9e2d8e5cf6e
          • MD5 SHA1 SHA512 SSDEEP TLSH
          Submit Download

          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 607B
          • SHA256 be6b74e52e5eef1f1c27c0976bf3bf1bfa99958c00bbef2898a602f691be6dae
          • MD5 SHA1 SHA512 TLSH
          Submit Download

          tmp65FF.tmp.bat
          • Path C:\Users\Admin\AppData\Local\Temp\tmp65FF.tmp.bat
          • Size 159B
          • SHA256 1da23edc2900ac6e30cf24651a2511962e0cec0e03453868b6daf0c5d7d81403
          • MD5 SHA1 SHA512 TLSH
          Submit Download

          memory/944-15-0x00007FF8E6B10000-0x00007FF8E74B4000-memory.dmp
          Download

          memory/944-16-0x00007FF8E6B10000-0x00007FF8E74B4000-memory.dmp
          Download

          memory/944-14-0x00007FF8E6B10000-0x00007FF8E74B4000-memory.dmp
          Download

          memory/944-17-0x00007FF8E6B10000-0x00007FF8E74B4000-memory.dmp
          Download

          memory/944-13-0x00007FF8E6B10000-0x00007FF8E74B4000-memory.dmp
          Download

          memory/1172-20-0x00007FF8E6B10000-0x00007FF8E74B4000-memory.dmp
          Download

          memory/1172-9-0x00007FF8E6B10000-0x00007FF8E74B4000-memory.dmp
          Download

          memory/1172-19-0x00007FF8E6B10000-0x00007FF8E74B4000-memory.dmp
          Download

          memory/1172-2-0x00007FF8E6B10000-0x00007FF8E74B4000-memory.dmp
          Download

          memory/1172-1-0x00000000006D0000-0x00000000006E8000-memory.dmp
          Download

          memory/1172-4-0x00007FF8E6B10000-0x00007FF8E74B4000-memory.dmp
          Download

          memory/1172-3-0x00007FF8E6B10000-0x00007FF8E74B4000-memory.dmp
          Download

          memory/1172-18-0x00007FF8E6B10000-0x00007FF8E74B4000-memory.dmp
          Download

          memory/1172-222-0x00007FF8E6B10000-0x00007FF8E74B4000-memory.dmp
          Download

          memory/1172-0-0x00007FF8E6C9F000-0x00007FF8E6CA0000-memory.dmp
          Download

          memory/2896-38-0x0000028883E90000-0x0000028883F90000-memory.dmp
          Download

          memory/2896-55-0x0000028883C90000-0x0000028883CB0000-memory.dmp
          Download

          memory/2896-36-0x0000028883A30000-0x0000028883A50000-memory.dmp
          Download

          memory/2896-69-0x0000028884210000-0x0000028884230000-memory.dmp
          Download

          memory/2896-23-0x00000288801E0000-0x00000288802E0000-memory.dmp
          Download

          memory/5428-214-0x000000000DE30000-0x000000000E6AB000-memory.dmp
          Download