Overview

overview

10

Static

static

5

HardDiskSe...er.exe

windows10-2004-x64

10

HardDiskSe...er.exe

windows11-ltsc_2024-x64

10

Analysis

  • user interaction
    yes
  • max time kernel
    147s
  • max time network
    150s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    21/07/2026, 02:40

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General

  • Target
    HardDiskSerialNumberChanger.exe
  • Size 814KB
  • Sample260721-c6b5vset8z
  • SHA256 3eefd68b713fdf1e65fdfe2cd81381627e7554ae20e9dbcbb0f71fb3e72f8950
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
adwaredefense_evasionexecutionpersistenceprivilege_escalationspyware

Malware Config

Signatures

  • Modifies WinLogon for persistence 2 TTPs 1 IoCs
    persistence
  • Boot or Logon Autostart Execution: Active Setup 2 TTPs 1 IoCs

    Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.

    persistence
  • Event Triggered Execution: AppInit DLLs 1 TTPs

    Adversaries may establish persistence and/or elevate privileges by executing malicious content triggered by AppInit DLLs loaded into processes.

    persistenceprivilege_escalation
  • Loads dropped DLL 5 IoCs
  • 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 6 IoCs

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

  • Drops file in Windows directory 2 IoCs
  • Executes a command shell one-liner 1 TTPs 12 IoCs

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

    execution
  • Checks SCSI registry key(s) 3 TTPs 62 IoCs

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

  • Delays execution with timeout.exe 1 IoCs
    defense_evasion
  • Kills process with taskkill 1 IoCs
    defense_evasion
  • Modifies Internet Explorer settings 1 TTPs 1 IoCs
    adwarespyware
  • Modifies registry class 29 IoCs
  • Scheduled Task/Job: Scheduled Task 1 TTPs 7 IoCs

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

    persistenceexecution
  • Suspicious behavior: EnumeratesProcesses 11 IoCs
  • Suspicious use of AdjustPrivilegeToken 32 IoCs
  • Suspicious use of FindShellTrayWindow 35 IoCs
  • Suspicious use of SendNotifyMessage 23 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 9 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

Processes

  • C:\Users\Admin\AppData\Local\Temp\HardDiskSerialNumberChanger.exe
    "C:\Users\Admin\AppData\Local\Temp\HardDiskSerialNumberChanger.exe"
    1⤵
    • Modifies WinLogon for persistence
    • Drops file in Windows directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3388
    • C:\Windows\SYSTEM32\CMD.exe
      "CMD" netsh advfirewall firewall add rule name="L8)lVUWKV)v*V4" dir=in action=allow program="C:\Users\Admin\AppData\Local\scvhosta" enable=yes & exit
      2⤵
        PID:2700
      • C:\Windows\SYSTEM32\cmd.exe
        "cmd" /c schtasks /create /f /sc minute /mo 1 /tn "" /tr "C:\Users\Admin\AppData\Local\scvhosta" /RL HIGHEST & exit
        2⤵
        • Executes a command shell one-liner
        • Suspicious use of WriteProcessMemory
        PID:4608
        • C:\Windows\system32\schtasks.exe
          schtasks /create /f /sc minute /mo 1 /tn "" /tr "C:\Users\Admin\AppData\Local\scvhosta" /RL HIGHEST
          3⤵
          • Scheduled Task/Job: Scheduled Task
          PID:4320
      • C:\Windows\SYSTEM32\cmd.exe
        "cmd" /c schtasks /create /f /sc minute /mo 30 /tn "" /tr "C:\Users\Admin\AppData\Local\scvhosta" /RL HIGHEST & exit
        2⤵
        • Executes a command shell one-liner
        • Suspicious use of WriteProcessMemory
        PID:1520
        • C:\Windows\system32\schtasks.exe
          schtasks /create /f /sc minute /mo 30 /tn "" /tr "C:\Users\Admin\AppData\Local\scvhosta" /RL HIGHEST
          3⤵
          • Scheduled Task/Job: Scheduled Task
          PID:1188
      • C:\Windows\SYSTEM32\cmd.exe
        "cmd" /C taskkill /im explorer.exe /f > NUL 2>&1 && timeout /t 3 /nobreak > NUL && start explorer.exe
        2⤵
        • Executes a command shell one-liner
        • Suspicious use of WriteProcessMemory
        PID:4184
        • C:\Windows\system32\taskkill.exe
          taskkill /im explorer.exe /f
          3⤵
          • Loads dropped DLL
          • Kills process with taskkill
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:3304
        • C:\Windows\system32\timeout.exe
          timeout /t 3 /nobreak
          3⤵
          • Loads dropped DLL
          • Delays execution with timeout.exe
          • Suspicious behavior: EnumeratesProcesses
          PID:4792
        • C:\Windows\explorer.exe
          explorer.exe
          3⤵
          • Boot or Logon Autostart Execution: Active Setup
          • Loads dropped DLL
          • Enumerates connected drives
          • Checks SCSI registry key(s)
          • Modifies Internet Explorer settings
          • Modifies registry class
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of FindShellTrayWindow
          • Suspicious use of SendNotifyMessage
          • Suspicious use of SetWindowsHookEx
          PID:5740
      • C:\Windows\SYSTEM32\cmd.exe
        "cmd" /c schtasks /create /f /sc minute /mo 1 /tn "" /tr "C:\Users\Admin\AppData\Local\scvhosta" /RL HIGHEST & exit
        2⤵
        • Executes a command shell one-liner
        PID:2896
        • C:\Windows\system32\schtasks.exe
          schtasks /create /f /sc minute /mo 1 /tn "" /tr "C:\Users\Admin\AppData\Local\scvhosta" /RL HIGHEST
          3⤵
          • Scheduled Task/Job: Scheduled Task
          PID:5932
      • C:\Windows\SYSTEM32\cmd.exe
        "cmd" /c schtasks /create /f /sc minute /mo 30 /tn "" /tr "C:\Users\Admin\AppData\Local\scvhosta" /RL HIGHEST & exit
        2⤵
        • Executes a command shell one-liner
        PID:2328
        • C:\Windows\system32\schtasks.exe
          schtasks /create /f /sc minute /mo 30 /tn "" /tr "C:\Users\Admin\AppData\Local\scvhosta" /RL HIGHEST
          3⤵
          • Scheduled Task/Job: Scheduled Task
          PID:2592
      • C:\Windows\SYSTEM32\cmd.exe
        "cmd" /c schtasks /create /f /sc minute /mo 1 /tn "" /tr "C:\Users\Admin\AppData\Local\scvhosta" /RL HIGHEST & exit
        2⤵
        • Executes a command shell one-liner
        PID:2860
        • C:\Windows\system32\schtasks.exe
          schtasks /create /f /sc minute /mo 1 /tn "" /tr "C:\Users\Admin\AppData\Local\scvhosta" /RL HIGHEST
          3⤵
          • Scheduled Task/Job: Scheduled Task
          PID:3676
      • C:\Windows\SYSTEM32\cmd.exe
        "cmd" /c schtasks /create /f /sc minute /mo 30 /tn "" /tr "C:\Users\Admin\AppData\Local\scvhosta" /RL HIGHEST & exit
        2⤵
        • Executes a command shell one-liner
        PID:1496
        • C:\Windows\system32\schtasks.exe
          schtasks /create /f /sc minute /mo 30 /tn "" /tr "C:\Users\Admin\AppData\Local\scvhosta" /RL HIGHEST
          3⤵
          • Scheduled Task/Job: Scheduled Task
          PID:2100
    • C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe
      "C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe" -ServerName:App.AppXywbrabmsek0gm3tkwpr5kwzbs55tkqay.mca
      1⤵
      • Modifies registry class
      • Suspicious use of SetWindowsHookEx
      PID:3512
    • C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\SearchHost.exe
      "C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\SearchHost.exe" -ServerName:CortanaUI.AppXstmwaab17q5s3y22tp6apqz7a45vwv65.mca
      1⤵
      • Modifies registry class
      • Suspicious use of SetWindowsHookEx
      PID:2452
    • C:\Users\Admin\AppData\Local\scvhosta
      "C:\Users\Admin\AppData\Local\scvhosta"
      1⤵
        PID:2184
        • C:\Windows\system32\cmd.exe
          "cmd" /c schtasks /create /f /sc minute /mo 30 /tn "" /tr "C:\Users\Admin\AppData\Local\scvhosta" /RL HIGHEST & exit
          2⤵
          • Executes a command shell one-liner
          PID:5488
          • C:\Windows\System32\schtasks.exe
            schtasks /create /f /sc minute /mo 30 /tn "" /tr "C:\Users\Admin\AppData\Local\scvhosta" /RL HIGHEST
            3⤵
            • Scheduled Task/Job: Scheduled Task
            PID:1004
        • C:\Windows\system32\cmd.exe
          "cmd" /c schtasks /create /f /sc minute /mo 30 /tn "" /tr "C:\Users\Admin\AppData\Local\scvhosta" /RL HIGHEST & exit
          2⤵
          • Executes a command shell one-liner
          PID:1704
        • C:\Windows\system32\cmd.exe
          "cmd" /c schtasks /create /f /sc minute /mo 30 /tn "" /tr "C:\Users\Admin\AppData\Local\scvhosta" /RL HIGHEST & exit
          2⤵
          • Executes a command shell one-liner
          PID:2784
        • C:\Windows\System32\cmd.exe
          "C:\Windows\System32\cmd.exe" /c start /b powershell –ExecutionPolicy Bypass Start-Process -FilePath '"C:\Users\Admin\AppData\Local\Temp\tmp1389.tmp.exe"' & exit
          2⤵
          • Executes a command shell one-liner
          PID:3280
      • C:\Users\Admin\AppData\Local\scvhosta
        "C:\Users\Admin\AppData\Local\scvhosta"
        1⤵
          PID:4144
        • C:\Users\Admin\AppData\Local\scvhosta
          "C:\Users\Admin\AppData\Local\scvhosta"
          1⤵
            PID:3892
            • C:\Windows\system32\cmd.exe
              "cmd" /c schtasks /create /f /sc minute /mo 30 /tn "" /tr "C:\Users\Admin\AppData\Local\scvhosta" /RL HIGHEST & exit
              2⤵
              • Executes a command shell one-liner
              PID:4492
          • C:\Users\Admin\AppData\Local\scvhosta
            "C:\Users\Admin\AppData\Local\scvhosta"
            1⤵
              PID:3952
            • C:\Users\Admin\AppData\Local\scvhosta
              "C:\Users\Admin\AppData\Local\scvhosta"
              1⤵
                PID:2880

              Network

                    MITRE ATT&CK Enterprise v16

                    Reconnaissance

                    Resource Development

                    Initial Access

                    Execution

                    Command and Scripting Interpreter

                    1
                    T1059

                    Windows Command Shell

                    1
                    T1059.003

                    Scheduled Task/Job

                    1
                    T1053

                    Scheduled Task

                    1
                    T1053.005

                    Persistence

                    Boot or Logon Autostart Execution

                    2
                    T1547

                    Active Setup

                    1
                    T1547.014

                    Winlogon Helper DLL

                    1
                    T1547.004

                    Event Triggered Execution

                    1
                    T1546

                    AppInit DLLs

                    1
                    T1546.010

                    Scheduled Task/Job

                    1
                    T1053

                    Scheduled Task

                    1
                    T1053.005

                    Privilege Escalation

                    Boot or Logon Autostart Execution

                    2
                    T1547

                    Active Setup

                    1
                    T1547.014

                    Winlogon Helper DLL

                    1
                    T1547.004

                    Event Triggered Execution

                    1
                    T1546

                    AppInit DLLs

                    1
                    T1546.010

                    Scheduled Task/Job

                    1
                    T1053

                    Scheduled Task

                    1
                    T1053.005

                    Defense Evasion

                    Modify Registry

                    3
                    T1112

                    Credential Access

                    Discovery

                    Peripheral Device Discovery

                    2
                    T1120

                    Query Registry

                    3
                    T1012

                    System Information Discovery

                    2
                    T1082

                    Lateral Movement

                    Collection

                    Command and Control

                    Exfiltration

                    Impact

                    Replay Monitor

                    Loading Replay Monitor...

                    Downloads

                    prep_Activatable Class_Hermes_perf.cache
                    • Path C:\Users\Admin\AppData\Local\Packages\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\TempState\prep_Activatable Class_Hermes_perf.cache
                    • Size 607B
                    • SHA256 be6b74e52e5eef1f1c27c0976bf3bf1bfa99958c00bbef2898a602f691be6dae
                    • MD5 SHA1 SHA512 TLSH
                    Submit Download

                    scvhosta
                    • Path C:\Users\Admin\AppData\Local\scvhosta
                    • Size 814KB
                    • SHA256 3eefd68b713fdf1e65fdfe2cd81381627e7554ae20e9dbcbb0f71fb3e72f8950
                    • MD5 SHA1 SHA512 SSDEEP TLSH
                    Submit Download

                    xdwd.dll
                    • Path C:\Windows\xdwd.dll
                    • Size 136KB
                    • SHA256 35c8d022e1d917f1aabdceae98097ccc072161b302f84c768ca63e4b32ac2b66
                    • MD5 SHA1 SHA512 SSDEEP TLSH
                    Submit Download

                    memory/2184-339-0x00000146B77F0000-0x00000146B7802000-memory.dmp
                    Download

                    memory/2184-335-0x00000146B7770000-0x00000146B777C000-memory.dmp
                    Download

                    memory/2184-332-0x000001469EAB0000-0x000001469EAB8000-memory.dmp
                    Download

                    memory/2184-329-0x000001469EA80000-0x000001469EAAE000-memory.dmp
                    Download

                    memory/2452-72-0x00000213801E0000-0x00000213802E0000-memory.dmp
                    Download

                    memory/2452-92-0x0000021393E20000-0x0000021393F20000-memory.dmp
                    Download

                    memory/2452-88-0x0000021383930000-0x0000021383950000-memory.dmp
                    Download

                    memory/2452-101-0x0000021383D10000-0x0000021383D30000-memory.dmp
                    Download

                    memory/2452-120-0x0000021394210000-0x0000021394230000-memory.dmp
                    Download

                    memory/3388-5-0x00007FFC6D520000-0x00007FFC6DEC4000-memory.dmp
                    Download

                    memory/3388-53-0x00007FFC6D520000-0x00007FFC6DEC4000-memory.dmp
                    Download

                    memory/3388-7-0x00007FFC6D520000-0x00007FFC6DEC4000-memory.dmp
                    Download

                    memory/3388-6-0x00007FFC6D520000-0x00007FFC6DEC4000-memory.dmp
                    Download

                    memory/3388-0-0x0000015C4DEC0000-0x0000015C4DF8C000-memory.dmp
                    Download

                    memory/3388-221-0x00007FFC6D520000-0x00007FFC6DEC4000-memory.dmp
                    Download

                    memory/3388-4-0x00007FFC6D520000-0x00007FFC6DEC4000-memory.dmp
                    Download

                    memory/3388-3-0x00007FFC6D520000-0x00007FFC6DEC4000-memory.dmp
                    Download

                    memory/3388-2-0x00007FFC6D520000-0x00007FFC6DEC4000-memory.dmp
                    Download

                    memory/3388-1-0x00007FFC6D6AF000-0x00007FFC6D6B0000-memory.dmp
                    Download

                    memory/5740-259-0x000000000B350000-0x000000000B3B2000-memory.dmp
                    Download