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
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260513-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-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
defense_evasionexecutionxwormpersistencerattrojan

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
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Drops startup file 2 IoCs
  • Executes dropped EXE 3 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
    persistence
  • Enumerates physical storage devices 1 TTPs

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

  • Delays execution with timeout.exe 1 IoCs
    defense_evasion
  • 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 use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of WriteProcessMemory 4 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

Processes

  • C:\Users\Admin\AppData\Local\Temp\ech0-ac.exe
    "C:\Users\Admin\AppData\Local\Temp\ech0-ac.exe"
    1⤵
    • Checks computer location settings
    • Drops startup file
    • Adds Run key to start application
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2336
    • 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:2892
    • C:\Windows\System32\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /delete /f /tn "HealthService"
      2⤵
        PID:2448
      • C:\Windows\system32\cmd.exe
        C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp840B.tmp.bat""
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:3560
        • C:\Windows\system32\timeout.exe
          timeout 3
          3⤵
          • Delays execution with timeout.exe
          PID:3152
    • C:\ProgramData\HealthService.exe
      C:\ProgramData\HealthService.exe
      1⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:3856
    • C:\PROGRA~3\HealthService.exe
      C:\PROGRA~3\HEALTH~1.EXE
      1⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:3620
    • C:\ProgramData\HealthService.exe
      C:\ProgramData\HealthService.exe
      1⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:4376

    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

          HealthService.exe.log
          • Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\HealthService.exe.log
          • Size 654B
          • SHA256 e1b91642d85d98124a6a31f710e137ab7fd90dec30e74a05ab7fcf3b7887dced
          • MD5 SHA1 SHA512 TLSH
          Submit Download

          tmp840B.tmp.bat
          • Path C:\Users\Admin\AppData\Local\Temp\tmp840B.tmp.bat
          • Size 159B
          • SHA256 7fc84c9c4e3020dcc29350bb33f97d680684af96abc67c5dfe2bad1980603fcd
          • MD5 SHA1 SHA512 TLSH
          Submit Download

          memory/2336-0-0x0000000000F60000-0x0000000000F78000-memory.dmp
          Download

          memory/2336-5-0x000000001BC50000-0x000000001BC60000-memory.dmp
          Download

          memory/2336-11-0x000000001BC50000-0x000000001BC60000-memory.dmp
          Download