Analysis

  • user interaction
    yes
  • max time kernel
    149s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260130-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260130-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    04/03/2026, 07:34

General

  • Target
    example_protected.exe
  • Size 1.8MB
  • Sample260304-jef33af12x
  • SHA256 4fb151010a77003ee52af0b25a3c609717c143294497752a8c59093e53bd68e8
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Extracted

Family
  • xworm

Version
  • 3.1

C2
  • 84.181.175.173:4444

Attributes
  • Install_directory

    %AppData%

  • install_file

    USB.exe

Signatures

  • Detect Xworm Payload 7 IoCs
  • Xworm

    Xworm is a remote access trojan written in C#.

  • Xworm family
  • Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 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.

  • Manipulates Digital Signatures 1 TTPs 3 IoCs

    Attackers can apply techniques such as changing the registry keys of authenticode & Cryptography to make their binary seem validly signed.

  • Checks BIOS information in registry 2 TTPs 2 IoCs

    BIOS information is often read in order to detect sandboxing environments.

  • Checks computer location settings 2 TTPs 2 IoCs

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

  • Drops startup file 2 IoCs
  • Executes dropped EXE 4 IoCs
  • Themida packer 8 IoCs

    Detects Themida, an advanced Windows software protection system.

  • Adds Run key to start application 2 TTPs 2 IoCs
  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Looks up external IP address via web service 1 IoCs

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

  • Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 6 IoCs

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

  • Checks SCSI registry key(s) 3 TTPs 3 IoCs

    SCSI information is often read in order to detect sandboxing environments.

  • 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 25 IoCs
  • Suspicious use of AdjustPrivilegeToken 14 IoCs
  • Suspicious use of FindShellTrayWindow 42 IoCs
  • Suspicious use of SendNotifyMessage 42 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 10 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\example_protected.exe
    "C:\Users\Admin\AppData\Local\Temp\example_protected.exe"
    1⤵
    • Identifies VirtualBox via ACPI registry values (likely anti-VM)
    • Checks BIOS information in registry
    • Checks computer location settings
    • Adds Run key to start application
    • Checks whether UAC is enabled
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:752
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c certutil -hashfile "C:\Users\Admin\AppData\Local\Temp\example_protected.exe" MD5 | find /i /v "md5" | find /i /v "certutil"
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:1780
      • C:\Windows\SysWOW64\certutil.exe
        certutil -hashfile "C:\Users\Admin\AppData\Local\Temp\example_protected.exe" MD5
        3⤵
        • Manipulates Digital Signatures
        • System Location Discovery: System Language Discovery
        PID:2920
      • C:\Windows\SysWOW64\find.exe
        find /i /v "md5"
        3⤵
        • System Location Discovery: System Language Discovery
        PID:3112
      • C:\Windows\SysWOW64\find.exe
        find /i /v "certutil"
        3⤵
        • System Location Discovery: System Language Discovery
        PID:436
    • C:\Users\Admin\AppData\Roaming\WindowsManager\winlogonnn.exe
      "C:\Users\Admin\AppData\Roaming\WindowsManager\winlogonnn.exe"
      2⤵
      • Checks computer location settings
      • Drops startup file
      • Executes dropped EXE
      • Adds Run key to start application
      • Suspicious behavior: AddClipboardFormatListener
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:4720
      • 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\Roaming\WindowsManager\winlogonnn.exe'
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:4680
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'winlogonnn.exe'
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:2788
      • 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\Roaming\winlogonnn.exe'
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:3164
      • C:\Windows\System32\schtasks.exe
        "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "winlogonnn" /tr "C:\Users\Admin\AppData\Roaming\winlogonnn.exe"
        3⤵
        • Scheduled Task/Job: Scheduled Task
        PID:1456
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c cls
      2⤵
      • System Location Discovery: System Language Discovery
      PID:4200
  • C:\Users\Admin\AppData\Roaming\WindowsManager\winlogonnn.exe
    C:\Users\Admin\AppData\Roaming\WindowsManager\winlogonnn.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:552
  • C:\Windows\system32\taskmgr.exe
    "C:\Windows\system32\taskmgr.exe" /4
    1⤵
    • Checks SCSI registry key(s)
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    PID:3472
  • C:\Users\Admin\AppData\Roaming\winlogonnn.exe
    C:\Users\Admin\AppData\Roaming\winlogonnn.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:3420
  • C:\Users\Admin\AppData\Roaming\winlogonnn.exe
    C:\Users\Admin\AppData\Roaming\winlogonnn.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:4484

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 2KB
        • SHA256 84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f
        • MD5 SHA1 SHA512 TLSH

        winlogonnn.exe.log

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

        StartupProfileData-NonInteractive

        • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
        • Size 944B
        • SHA256 f8ddc8eddb53247304e5463829cbf8d1a420a77781237820efa0c94ab18612cd
        • MD5 SHA1 SHA512 TLSH

        StartupProfileData-NonInteractive

        • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
        • Size 944B
        • SHA256 be96c91b62ba9ba7072ab89e66543328c9e4395150f9dbe8067332d94a3ecc61
        • MD5 SHA1 SHA512 TLSH

        __PSScriptPolicyTest_k4sa4ffv.qgu.ps1

        • Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_k4sa4ffv.qgu.ps1
        • Size 60B
        • SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
        • MD5 SHA1 SHA512 TLSH

        winlogonnn.lnk

        • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\winlogonnn.lnk
        • Size 788B
        • SHA256 fcdf627c2fe00b42d77afc8603c71bbe5df66d5980a23a1d9f972100de63134a
        • MD5 SHA1 SHA512 TLSH

        winlogonnn.exe

        • Path C:\Users\Admin\AppData\Roaming\WindowsManager\winlogonnn.exe
        • Size 75KB
        • SHA256 7924f9829b9afa6e66d9bac8a694874236a2a4fa59db8cd81551a91e29be869a
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/552-25-0x0000000002D10000-0x0000000002D18000-memory.dmp

        memory/752-6-0x0000000000D80000-0x0000000000DC5000-memory.dmp

        memory/752-5-0x0000000000400000-0x00000000008D8000-memory.dmp

        memory/752-0-0x0000000000400000-0x00000000008D8000-memory.dmp

        memory/752-23-0x0000000000D80000-0x0000000000DC5000-memory.dmp

        memory/752-22-0x0000000000400000-0x00000000008D8000-memory.dmp

        memory/752-7-0x0000000000400000-0x00000000008D8000-memory.dmp

        memory/752-95-0x0000000000D80000-0x0000000000DC5000-memory.dmp

        memory/752-4-0x0000000000400000-0x00000000008D8000-memory.dmp

        memory/752-2-0x0000000000400000-0x00000000008D8000-memory.dmp

        memory/752-3-0x0000000000400000-0x00000000008D8000-memory.dmp

        memory/752-1-0x0000000000400000-0x00000000008D8000-memory.dmp

        memory/2788-48-0x00000238AA6B0000-0x00000238AA705000-memory.dmp

        memory/2788-49-0x00000238AA960000-0x00000238AA968000-memory.dmp

        memory/2920-20-0x0000000000B10000-0x0000000000B55000-memory.dmp

        memory/3164-60-0x00000188451C0000-0x00000188451C8000-memory.dmp

        memory/3164-59-0x00000188450F0000-0x0000018845145000-memory.dmp

        memory/3420-102-0x00000000017E0000-0x00000000017E8000-memory.dmp

        memory/3472-81-0x0000020A047C0000-0x0000020A047C1000-memory.dmp

        memory/3472-79-0x0000020A047C0000-0x0000020A047C1000-memory.dmp

        memory/3472-73-0x0000020A047C0000-0x0000020A047C1000-memory.dmp

        memory/3472-72-0x0000020A047C0000-0x0000020A047C1000-memory.dmp

        memory/3472-71-0x0000020A047C0000-0x0000020A047C1000-memory.dmp

        memory/3472-83-0x0000020A047C0000-0x0000020A047C1000-memory.dmp

        memory/3472-82-0x0000020A047C0000-0x0000020A047C1000-memory.dmp

        memory/3472-90-0x0000020A7CC10000-0x0000020A7CCBC000-memory.dmp

        memory/3472-80-0x0000020A047C0000-0x0000020A047C1000-memory.dmp

        memory/3472-77-0x0000020A047C0000-0x0000020A047C1000-memory.dmp

        memory/3472-78-0x0000020A047C0000-0x0000020A047C1000-memory.dmp

        memory/4484-115-0x0000000001150000-0x0000000001158000-memory.dmp

        memory/4680-37-0x000001A461DF0000-0x000001A461DF8000-memory.dmp

        memory/4680-36-0x000001A461C90000-0x000001A461CE5000-memory.dmp

        memory/4680-33-0x000001A47A4A0000-0x000001A47A4C2000-memory.dmp

        memory/4720-67-0x00000000007F0000-0x00000000007F8000-memory.dmp

        memory/4720-19-0x0000000000040000-0x000000000005A000-memory.dmp

        memory/4720-68-0x0000000002130000-0x0000000002138000-memory.dmp