Overview

overview

10

Static

static

10

XClient.exe

windows10-2004-x64

10

XClient.exe

windows11-ltsc_2024-x64

Analysis

  • user interaction
    yes
  • max time kernel
    49s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260911-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260911-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    02/10/2026, 05:02

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General

  • Target
    XClient.exe
  • Size 34KB
  • Sample261002-fpkx8axt7l
  • SHA256 8c43b4698d7a90364ea8d27579f78651d35c86e7d1bfb86575209427b379f7a8
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
bootkitdiscoveryexecutionxwormpersistenceprivilege_escalationrattrojan

Malware Config

Extracted

Family

  • xworm

Version

  • 5.0

C2

  • 25.tcp.vip.cpolar.cn:11220

Mutex

  • xND5jEA6idxxyJ2H

Attributes
  • Install_directory

    %AppData%

  • install_file

    XClient.exe

aes.plain

Signatures

  • Family: Xworm

    Xworm is a remote access trojan written in C#.

    trojanratxworm
  • Detect Xworm Payload 1 IoCs
  • Checks computer location settings 2 TTPs 2 IoCs

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

  • Creates a file in the Startup directory 1 TTPs 2 IoCs

    A file was written to a Windows startup folder. Files in these directories are executed automatically when a user logs on or an application initializes.

    persistenceprivilege_escalation
  • Event Triggered Execution: Component Object Model Hijacking 1 TTPs

    Adversaries may establish persistence by executing malicious content triggered by hijacked references to Component Object Model (COM) objects.

    persistenceprivilege_escalation
  • Executes dropped EXE 1 IoCs
  • Modifies system executable filetype association 2 TTPs 47 IoCs
    persistence
  • Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs

    Bootkits write to the MBR to gain persistence at a level below the operating system.

    bootkitpersistence
  • Enumerates physical storage devices 1 TTPs

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

  • Executes a command shell one-liner 1 TTPs 1 IoCs

    Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.

    execution
  • Reads the TCP/IP host and domain name from the registry 1 TTPs 2 IoCs

    The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.

    discovery
  • System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

    discovery
  • Modifies registry class 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\XClient.exe
    "C:\Users\Admin\AppData\Local\Temp\XClient.exe"
    1⤵
    • Checks computer location settings
    • Creates a file in the Startup directory
    • Reads the TCP/IP host and domain name from the registry
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3988
    • C:\Users\Admin\AppData\Local\Temp\ahcqek.exe
      "C:\Users\Admin\AppData\Local\Temp\ahcqek.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • Writes to the Master Boot Record (MBR)
      • System Location Discovery: System Language Discovery
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:5052
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /k reg delete HKCR /f
        3⤵
        • Executes a command shell one-liner
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:4776
        • C:\Windows\SysWOW64\reg.exe
          reg delete HKCR /f
          4⤵
          • Modifies system executable filetype association
          • System Location Discovery: System Language Discovery
          • Modifies registry class
          PID:736
  • C:\Windows\system32\AUDIODG.EXE
    C:\Windows\system32\AUDIODG.EXE 0x310 0x414
    1⤵
      PID:4480

    Network

          MITRE ATT&CK Enterprise v16

          Reconnaissance

          Resource Development

          Initial Access

          Execution

          Command and Scripting Interpreter

          1
          T1059

          Windows Command Shell

          1
          T1059.003

          Persistence

          Boot or Logon Autostart Execution

          1
          T1547

          Registry Run Keys / Startup Folder

          1
          T1547.001

          Event Triggered Execution

          2
          T1546

          Change Default File Association

          1
          T1546.001

          Component Object Model Hijacking

          1
          T1546.015

          Pre-OS Boot

          1
          T1542

          Bootkit

          1
          T1542.003

          Privilege Escalation

          Boot or Logon Autostart Execution

          1
          T1547

          Registry Run Keys / Startup Folder

          1
          T1547.001

          Event Triggered Execution

          2
          T1546

          Change Default File Association

          1
          T1546.001

          Component Object Model Hijacking

          1
          T1546.015

          Defense Evasion

          Modify Registry

          1
          T1112

          Pre-OS Boot

          1
          T1542

          Bootkit

          1
          T1542.003

          Credential Access

          Discovery

          Query Registry

          1
          T1012

          System Information Discovery

          2
          T1082

          System Location Discovery

          1
          T1614

          System Language Discovery

          1
          T1614.001

          System Network Configuration Discovery

          1
          T1016

          Lateral Movement

          Collection

          Command and Control

          Exfiltration

          Impact

          Replay Monitor

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          Downloads

          ahcqek.exe
          • Path C:\Users\Admin\AppData\Local\Temp\ahcqek.exe
          • Size 14KB
          • SHA256 5906dc7c3cd938b874cfb12cd9a14a6e72116c31385f4584f997f1544e3da492
          • MD5 SHA1 SHA512 SSDEEP TLSH
          Submit Download

          memory/3988-0-0x0000000000BD0000-0x0000000000BDE000-memory.dmp
          Download

          memory/3988-5-0x00000000014C0000-0x00000000014D0000-memory.dmp
          Download

          memory/3988-6-0x00000000014C0000-0x00000000014D0000-memory.dmp
          Download

          memory/5052-18-0x0000000000EE0000-0x0000000000EEA000-memory.dmp
          Download

          memory/5052-19-0x00000000058E0000-0x0000000005972000-memory.dmp
          Download

          memory/5052-20-0x0000000006040000-0x00000000065E4000-memory.dmp
          Download

          memory/5052-21-0x0000000005A80000-0x0000000005A90000-memory.dmp
          Download

          memory/5052-25-0x0000000005A80000-0x0000000005A90000-memory.dmp
          Download