Analysis

  • max time kernel
    150s
  • max time network
    120s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260710-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260710-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    02/08/2026, 13:59

General

  • Target
    Installer_v3500_x64.exe
  • Size 18.1MB
  • Sample260802-ralfzsthpe
  • SHA256 1d5d0dfa7d49213f59f48704305762a936492c57026336a0ff56eafdf5710a48
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Enumerates VirtualBox registry keys 2 TTPs 4 IoCs
  • Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs
  • Looks for VirtualBox Guest Additions in registry 2 TTPs 2 IoCs
  • Command and Scripting Interpreter: PowerShell 1 TTPs 3 IoCs

    Run Powershell and hide display window.

  • Looks for VMWare Tools registry key 2 TTPs 2 IoCs
  • Checks BIOS information in registry 2 TTPs 2 IoCs

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

  • Executes dropped EXE 2 IoCs
  • Themida packer 3 IoCs

    Detects Themida, an advanced Windows software protection system.

  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Looks up external IP address via web service 1 TTPs 2 IoCs

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

  • Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
  • 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.

  • Checks processor information in registry 2 TTPs 2 IoCs

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

  • Delays execution with timeout.exe 1 IoCs
  • 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: EnumeratesProcesses 39 IoCs
  • Suspicious use of AdjustPrivilegeToken 47 IoCs
  • Suspicious use of WriteProcessMemory 7 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\Installer_v3500_x64.exe
    "C:\Users\Admin\AppData\Local\Temp\Installer_v3500_x64.exe"
    1⤵
    • Identifies VirtualBox via ACPI registry values (likely anti-VM)
    • Checks BIOS information in registry
    • Checks whether UAC is enabled
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:5460
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "powershell.exe" -WindowStyle Hidden -Command "Add-MpPreference -ExclusionPath @('C:\Users\Admin\AppData\Local\Temp\Installer_v3500_x64.exe','C:\Users\Admin\AppData\Local','C:\Users\Admin\AppData\Roaming','C:\Users\Admin\AppData\Local','C:\Users\Admin\AppData\Roaming','RuntimeBroker.exe','InstallUtil.exe','AppLaunch.exe','dwm.exe','svchost.exe','explorer.exe','services.exe','schtasks.exe','conhost.exe'); Add-MpPreference -ExclusionProcess @('C:\Users\Admin\AppData\Local\Temp\Installer_v3500_x64.exe','RuntimeBroker.exe','InstallUtil.exe','AppLaunch.exe','dwm.exe','svchost.exe','explorer.exe','services.exe','schtasks.exe','conhost.exe','wscript.exe','PathMarker.vbs','ioextender.exe','InterPartHKIAsync.exe')"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1224
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "powershell.exe" -WindowStyle Hidden Start-Process 'C:\Users\Admin\AppData\Roaming\ExtendedMonitor\TNC000x859\InterPartHKIAsync.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1896
      • C:\Users\Admin\AppData\Roaming\ExtendedMonitor\TNC000x859\InterPartHKIAsync.exe
        "C:\Users\Admin\AppData\Roaming\ExtendedMonitor\TNC000x859\InterPartHKIAsync.exe"
        3⤵
        • Enumerates VirtualBox registry keys
        • Looks for VirtualBox Guest Additions in registry
        • Looks for VMWare Tools registry key
        • Executes dropped EXE
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:4824
        • C:\Windows\SYSTEM32\schtasks.exe
          "schtasks.exe" /Create /TN "Extended API 0136301" /TR "\"wscript.exe\" //nologo \"C:\Users\Admin\AppData\Roaming\ExtendedMonitor\TNC000x859\PathMarker.vbs\"" /SC MINUTE /MO 20 /RL HIGHEST /F
          4⤵
          • Scheduled Task/Job: Scheduled Task
          PID:2056
        • C:\Users\Admin\AppData\Roaming\ExtendedMonitor\TNC000x859\ioextender.exe
          "C:\Users\Admin\AppData\Roaming\ExtendedMonitor\TNC000x859\ioextender.exe"
          4⤵
          • Enumerates VirtualBox registry keys
          • Looks for VirtualBox Guest Additions in registry
          • Looks for VMWare Tools registry key
          • Executes dropped EXE
          • Checks processor information in registry
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:5368
        • C:\Windows\system32\cmd.exe
          C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\zzhwbwdb.bat""
          4⤵
          • Executes a command shell one-liner
          • Suspicious use of WriteProcessMemory
          PID:5240
          • C:\Windows\system32\timeout.exe
            timeout /t 3 /nobreak
            5⤵
            • Delays execution with timeout.exe
            PID:5420
  • C:\Windows\system32\wscript.exe
    "wscript.exe"
    1⤵
      PID:5140

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          StartupProfileData-NonInteractive

          • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
          • Size 1KB
          • SHA256 435471b87a1a97b0e29f7d5dd0878e63031511f063629d7e750852c068e7c4f5
          • MD5 SHA1 SHA512 TLSH

          __PSScriptPolicyTest_0hspq5wu.2fb.ps1

          • Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_0hspq5wu.2fb.ps1
          • Size 60B
          • SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
          • MD5 SHA1 SHA512 TLSH

          zzhwbwdb.bat

          • Path C:\Users\Admin\AppData\Local\Temp\zzhwbwdb.bat
          • Size 266B
          • SHA256 5d3dce1d2a3fca3e8a265a793e96e2c04de90571857dea4a1bd52c5a75d568d8
          • MD5 SHA1 SHA512 TLSH

          InterPartHKIAsync.exe

          • Path C:\Users\Admin\AppData\Roaming\ExtendedMonitor\TNC000x859\InterPartHKIAsync.exe
          • Size 409KB
          • SHA256 640dd656adb4e1e264ed498dbcdcdbc15d8945435c40dd9ce8b0f2b5c208cf5c
          • MD5 SHA1 SHA512 SSDEEP TLSH

          install.dat

          • Path C:\Users\Admin\AppData\Roaming\ExtendedMonitor\install.dat
          • Size 72B
          • SHA256 d3f0675a618cd77e9720ffd0eb139d74154af228f580ac058b53f32c74444771
          • MD5 SHA1 SHA512 TLSH

          memory/1224-28-0x000001A3ECED0000-0x000001A3ECEDA000-memory.dmp

          memory/1224-32-0x00007FFE33E70000-0x00007FFE34814000-memory.dmp

          memory/1224-40-0x00007FFE33E70000-0x00007FFE34814000-memory.dmp

          memory/1224-39-0x00007FFE33E70000-0x00007FFE34814000-memory.dmp

          memory/1224-37-0x00007FFE33E70000-0x00007FFE34814000-memory.dmp

          memory/1224-14-0x000001A3ECE30000-0x000001A3ECE52000-memory.dmp

          memory/1224-15-0x00007FFE33E70000-0x00007FFE34814000-memory.dmp

          memory/1224-16-0x00007FFE33E70000-0x00007FFE34814000-memory.dmp

          memory/1224-17-0x00007FFE33E70000-0x00007FFE34814000-memory.dmp

          memory/1224-18-0x00007FFE33E70000-0x00007FFE34814000-memory.dmp

          memory/1224-19-0x00007FFE33E70000-0x00007FFE34814000-memory.dmp

          memory/1224-20-0x00007FFE33E70000-0x00007FFE34814000-memory.dmp

          memory/1224-21-0x00007FFE33E70000-0x00007FFE34814000-memory.dmp

          memory/1224-22-0x00007FFE33E70000-0x00007FFE34814000-memory.dmp

          memory/1224-25-0x000001A3ED0F0000-0x000001A3ED10E000-memory.dmp

          memory/1224-27-0x000001A3ED110000-0x000001A3ED1C2000-memory.dmp

          memory/1224-26-0x00007FFE33E70000-0x00007FFE34814000-memory.dmp

          memory/1224-36-0x00007FFE33E70000-0x00007FFE34814000-memory.dmp

          memory/1224-29-0x00007FFE33E70000-0x00007FFE34814000-memory.dmp

          memory/1224-30-0x00007FFE33E70000-0x00007FFE34814000-memory.dmp

          memory/1224-31-0x00007FFE33E70000-0x00007FFE34814000-memory.dmp

          memory/1224-35-0x00007FFE33E70000-0x00007FFE34814000-memory.dmp

          memory/1224-33-0x00007FFE33E70000-0x00007FFE34814000-memory.dmp

          memory/1224-34-0x00007FFE33E70000-0x00007FFE34814000-memory.dmp

          memory/4824-53-0x000001DFF8470000-0x000001DFF84DA000-memory.dmp

          memory/4824-55-0x000001DFF89C0000-0x000001DFF89C8000-memory.dmp

          memory/5460-9-0x00007FFE33E70000-0x00007FFE34814000-memory.dmp

          memory/5460-6-0x00007FFE33E70000-0x00007FFE34814000-memory.dmp

          memory/5460-8-0x0000000000400000-0x0000000001D90000-memory.dmp

          memory/5460-41-0x0000000000400000-0x0000000001D90000-memory.dmp

          memory/5460-42-0x00007FFE33E70000-0x00007FFE34814000-memory.dmp

          memory/5460-44-0x000000001F190000-0x000000001FF32000-memory.dmp

          memory/5460-7-0x0000000000400000-0x0000000001D90000-memory.dmp

          memory/5460-10-0x00007FFE33E70000-0x00007FFE34814000-memory.dmp

          memory/5460-5-0x00007FFE33FFF000-0x00007FFE34000000-memory.dmp

          memory/5460-11-0x00007FFE33E70000-0x00007FFE34814000-memory.dmp

          memory/5460-0-0x0000000000400000-0x0000000001D90000-memory.dmp

          memory/5460-1-0x00007FFE00000000-0x00007FFE00002000-memory.dmp

          memory/5460-2-0x00007FFE00030000-0x00007FFE00031000-memory.dmp

          memory/5460-66-0x00007FFE33E70000-0x00007FFE34814000-memory.dmp

          memory/5460-67-0x0000000000400000-0x0000000001D90000-memory.dmp