Analysis

  • max time kernel
    148s
  • 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, 19:54

General

  • Target
    payload.exe
  • Size 170KB
  • Sample260705-ymrxvsa17q
  • SHA256 213ca0c1084c8121caf8e35cf87a1db48e2d9addaa324c8cbb218bbb40514ed0
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Extracted

Family
  • xworm

Version
  • 5.0

Mutex
  • NcyOAucyNvAAl61w

Attributes
  • install_file

    USB.exe

  • localhost

    127.0.0.1

aes.plain

Signatures

  • Family: DonutLoader

    DonutLoader is a position-independent code that enables in-memory execution of VBScript, JScript, EXE, DLL files and dotNET assemblies.

  • Family: Xworm

    Xworm is a remote access trojan written in C#.

  • Detect Xworm Payload 1 IoCs
  • Detects DonutLoader 1 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Delays execution with timeout.exe 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 5 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\payload.exe
    "C:\Users\Admin\AppData\Local\Temp\payload.exe"
    1⤵
    • Adds Run key to start application
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:3220
    • C:\Windows\System32\notepad.exe
      C:\Windows\System32\notepad.exe
      2⤵
        PID:5652
      • C:\Windows\System32\svchost.exe
        C:\Windows\System32\svchost.exe
        2⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:4224
      • C:\Windows\SYSTEM32\cmd.exe
        cmd.exe /c timeout /t 1 /nobreak && del /f /q "C:\Users\Admin\AppData\Local\Temp\payload.exe
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:2024
        • C:\Windows\system32\timeout.exe
          timeout /t 1 /nobreak
          3⤵
          • Delays execution with timeout.exe
          PID:1532

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

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          Downloads

          memory/4224-0-0x0000014312D30000-0x0000014312D39000-memory.dmp

          memory/4224-1-0x00007FFBCF75F000-0x00007FFBCF760000-memory.dmp

          memory/4224-2-0x0000014312F90000-0x0000014312F9E000-memory.dmp

          memory/4224-3-0x00007FFBCF5D0000-0x00007FFBCFF74000-memory.dmp

          memory/4224-4-0x00007FFBCF5D0000-0x00007FFBCFF74000-memory.dmp