Analysis

  • user interaction
    yes
  • max time kernel
    17s
  • max time network
    19s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260130-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260130-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    29/04/2026, 00:43

General

  • Target
    explorer.exe
  • Size 96KB
  • Sample260429-a264bsbv5j
  • SHA256 40863b0157641aa9ebee9b83c94c5ee008bf98f7180b3ddbf1c8bba50d326416
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Extracted

Family
  • xworm

Version
  • 3.1

C2
  • uncofig.com:5555

Attributes
  • Install_directory

    %ProgramData%

  • install_file

    explorer.exe

Signatures

  • Family: Xworm

    Xworm is a remote access trojan written in C#.

  • Detect Xworm Payload 2 IoCs
  • Command and Scripting Interpreter: PowerShell 1 TTPs 3 IoCs

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

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 1 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

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

  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 5 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.

Processes

  • C:\Users\Admin\AppData\Local\Temp\explorer.exe
    "C:\Users\Admin\AppData\Local\Temp\explorer.exe"
    1⤵
    • Checks computer location settings
    • Adds Run key to start application
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3040
    • 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\explorer.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2664
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'explorer.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1992
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\ProgramData\explorer.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:672
    • C:\Windows\System32\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "explorer" /tr "C:\ProgramData\explorer.exe"
      2⤵
      • Scheduled Task/Job: Scheduled Task
      PID:5032
  • C:\ProgramData\explorer.exe
    C:\ProgramData\explorer.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:2560

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        explorer.exe

        • Path C:\ProgramData\explorer.exe
        • Size 96KB
        • SHA256 40863b0157641aa9ebee9b83c94c5ee008bf98f7180b3ddbf1c8bba50d326416
        • MD5 SHA1 SHA512 SSDEEP TLSH

        powershell.exe.log

        • Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log
        • Size 2KB
        • SHA256 84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f
        • MD5 SHA1 SHA512 TLSH

        StartupProfileData-NonInteractive

        • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
        • Size 944B
        • SHA256 43ec39d124ebadf53f254b9aef5f1d2f73526a681682d0409af5e34beb8737d8
        • MD5 SHA1 SHA512 TLSH

        StartupProfileData-NonInteractive

        • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
        • Size 944B
        • SHA256 24522f12ccd8284ed705803f2c1a3b12ba7d675d300fed443ca9eb55fead55fb
        • MD5 SHA1 SHA512 TLSH

        __PSScriptPolicyTest_mobjt00f.ttp.ps1

        • Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_mobjt00f.ttp.ps1
        • Size 60B
        • SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
        • MD5 SHA1 SHA512 TLSH

        memory/672-34-0x0000018E51710000-0x0000018E5171C000-memory.dmp

        memory/1992-24-0x0000021CCE310000-0x0000021CCE31C000-memory.dmp

        memory/2560-42-0x0000000000D60000-0x0000000000D6C000-memory.dmp

        memory/2664-10-0x0000021C31460000-0x0000021C31482000-memory.dmp

        memory/2664-13-0x0000021C18D90000-0x0000021C18D9C000-memory.dmp

        memory/2664-1-0x0000021C314B0000-0x0000021C314C0000-memory.dmp

        memory/2664-2-0x0000021C314B0000-0x0000021C314C0000-memory.dmp

        memory/3040-0-0x0000000000D70000-0x0000000000D8E000-memory.dmp

        memory/3040-37-0x0000000002D60000-0x0000000002D70000-memory.dmp

        memory/3040-38-0x0000000002CF0000-0x0000000002CFC000-memory.dmp

        memory/3040-43-0x0000000002D60000-0x0000000002D70000-memory.dmp