Overview

overview

10

Static

static

3

Legend kiiler v.exe

windows10-ltsc_2021-x64

10

Legend kiiler v.exe

windows10-2004-x64

10

Legend kiiler v.exe

windows11-21h2-x64

10

Legend kiiler v.exe

windows11-ltsc_2024-x64

10

Analysis

  • user interaction
    yes
  • max time kernel
    149s
  • max time network
    147s
  • platform
    windows10-ltsc_2021_x64
  • resource
    win10ltsc2021-20260911-en
  • resource tags

    arch:x64arch:x86image:win10ltsc2021-20260911-enlocale:en-usos:windows10-ltsc_2021-x64systemwindows
  • submitted
    30/09/2026, 12:50

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General

  • Target
    Legend kiiler v.exe
  • Size 240KB
  • Sample260930-p298baxtdx
  • SHA256 cb4fcc07a8913820d0b8f5c35c7d2f35f6a3bd27dc65d88bccc4904039d6d71e
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
defense_evasiondiscoveryexecutionxwormpersistenceprivilege_escalationransomwarerattrojan

Malware Config

Extracted

Family

  • xworm

Version

  • 3.0

C2

  • 38.tcp.vip.cpolar.cn:12402

Attributes
  • Install_directory

    %LocalAppData%

  • install_file

    USB.exe

Signatures

  • Family: Xworm

    Xworm is a remote access trojan written in C#.

    trojanratxworm
  • Detect Xworm Payload 1 IoCs
  • Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

    Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

    execution
  • Checks computer location settings 2 TTPs 1 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
  • Executes dropped EXE 2 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
    persistence
  • Contacts third-party web service commonly abused for C2 1 TTPs 2 IoCs

    Legitimate web (hosting) services can be abused by malware authors to host malware or C2s.

  • Enumerates connected drives 3 TTPs 2 IoCs

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

  • Looks up external IP address via web service 1 TTPs 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

    discovery
  • 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 4 IoCs

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

    discovery
  • Delays execution with timeout.exe 1 IoCs
    defense_evasion
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 52 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
  • 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\Legend kiiler v.exe
    "C:\Users\Admin\AppData\Local\Temp\Legend kiiler v.exe"
    1⤵
    • Checks computer location settings
    • Reads the TCP/IP host and domain name from the registry
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2852
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\wlanext.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Enumerates connected drives
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3412
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'wlanext.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Enumerates connected drives
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:536
    • C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp9EAC.tmp.bat""
      2⤵
      • Executes a command shell one-liner
      • Suspicious use of WriteProcessMemory
      PID:3388
      • C:\Windows\system32\timeout.exe
        timeout 3
        3⤵
        • Delays execution with timeout.exe
        PID:2124
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:2464
  • C:\Users\Admin\AppData\Local\Temp\wlanext.exe
    C:\Users\Admin\AppData\Local\Temp\wlanext.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:224
  • C:\Users\Admin\AppData\Local\Temp\wlanext.exe
    "C:\Users\Admin\AppData\Local\Temp\wlanext.exe"
    1⤵
    • Creates a file in the Startup directory
    • Executes dropped EXE
    • Adds Run key to start application
    • Reads the TCP/IP host and domain name from the registry
    • Suspicious use of AdjustPrivilegeToken
    PID:2556

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        powershell.exe.log
        • Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log
        • Size 3KB
        • SHA256 c485a6e2fd17c342fca60060f47d6a5655a65a412e35e001bb5bf88d96e6e485
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        wlanext.exe.log
        • Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\wlanext.exe.log
        • Size 1KB
        • SHA256 a1ac1f065ecfcaaded0544844106cfa4aca48acad49fd347eb238561a91655b0
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        StartupProfileData-NonInteractive
        • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
        • Size 1KB
        • SHA256 078bde24df0c3df9db6b0ecc1c91a0304399d7aba3f7e536fc1b394baf3ca300
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        __PSScriptPolicyTest_hghap12h.5dr.ps1
        • Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_hghap12h.5dr.ps1
        • Size 60B
        • SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        tmp9EAC.tmp.bat
        • Path C:\Users\Admin\AppData\Local\Temp\tmp9EAC.tmp.bat
        • Size 167B
        • SHA256 ca7b704e985e3e37d91725e15e3d7aebff38d73762ac9292a1daac730b1d2846
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        wlanext.exe
        • Path C:\Users\Admin\AppData\Local\Temp\wlanext.exe
        • Size 240KB
        • SHA256 cb4fcc07a8913820d0b8f5c35c7d2f35f6a3bd27dc65d88bccc4904039d6d71e
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        memory/2556-35-0x0000000000E80000-0x0000000000E92000-memory.dmp
        Download

        memory/2852-0-0x0000000000160000-0x00000000001A2000-memory.dmp
        Download

        memory/2852-1-0x000000001BE80000-0x000000001BE90000-memory.dmp
        Download

        memory/3412-3-0x0000018C0C8D0000-0x0000018C0C8E0000-memory.dmp
        Download

        memory/3412-2-0x0000018C0C8D0000-0x0000018C0C8E0000-memory.dmp
        Download

        memory/3412-4-0x0000018C24C40000-0x0000018C24C62000-memory.dmp
        Download