Overview

overview

9

Static

static

3

cat downlo...1).exe

windows10-2004-x64

9

cat downlo...1).exe

windows11-ltsc_2024-x64

9

Analysis

  • user interaction
    yes
  • max time kernel
    900s
  • max time network
    552s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260911-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    18/10/2026, 16:50

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General

  • Target
    cat downloader (1).exe
  • Size 14.0MB
  • Sample261018-vcmcvae16n
  • SHA256 26a2c21a92457c6634193f216c578a12147b47569b56074cb9d53a74e77e98e0
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
adwaredefense_evasionpersistenceransomwarespyware

Malware Config

Signatures

  • Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs
    defense_evasion
  • Looks for VirtualBox Guest Additions in registry 2 TTPs 1 IoCs
    defense_evasion
  • 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
  • Checks BIOS information in registry 2 TTPs 2 IoCs

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

  • Enumerates connected drives 3 TTPs 2 IoCs

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

  • Suspicious use of NtSetInformationThreadHideFromDebugger 1 TTPs 2 IoCs
    defense_evasion
  • Checks for VirtualBox DLLs, possible anti-VM trick 1 TTPs 1 IoCs

    Certain files are specific to VirtualBox VMs and can be used to detect execution in a VM.

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

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

  • Modifies Internet Explorer settings 1 TTPs 1 IoCs
    adwarespyware
  • Modifies registry class 47 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 51 IoCs
  • Suspicious use of FindShellTrayWindow 54 IoCs
  • Suspicious use of SendNotifyMessage 41 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 1 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 WMI provider

    The Volume Shadow Copy service is used to manage backups/snapshots.

    ransomware
  • 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\cat downloader (1).exe
    "C:\Users\Admin\AppData\Local\Temp\cat downloader (1).exe"
    1⤵
    • Identifies VirtualBox via ACPI registry values (likely anti-VM)
    • Looks for VirtualBox Guest Additions in registry
    • Checks BIOS information in registry
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Checks for VirtualBox DLLs, possible anti-VM trick
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    PID:2792
  • C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k GPSvcGroup
    1⤵
      PID:3876
    • C:\Windows\system32\sihost.exe
      sihost.exe
      1⤵
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of WriteProcessMemory
      PID:5908
      • C:\Windows\explorer.exe
        explorer.exe /LOADSAVEDWINDOWS
        2⤵
        • Boot or Logon Autostart Execution: Active Setup
        • Enumerates connected drives
        • Checks SCSI registry key(s)
        • Modifies Internet Explorer settings
        • Modifies registry class
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        • Suspicious use of SetWindowsHookEx
        PID:4616
    • 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:1828
    • 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:5848
    • C:\Windows\System32\SecurityHealthHost.exe
      \\?\C:\Windows\System32\SecurityHealthHost.exe {08728914-3F57-4D52-9E31-49DAECA5A80A} -Embedding
      1⤵
        PID:5448

      Network

            MITRE ATT&CK Enterprise v16

            Replay Monitor

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            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 599B
            • SHA256 b536a3dae9ea5c69081f0491eed829e3b57e32401fdf49a63031bcd6b20e6fdb
            • MD5 SHA1 SHA512 TLSH
            Submit Download

            memory/1828-49-0x0000029A93E60000-0x0000029A93F60000-memory.dmp
            Download

            memory/1828-81-0x0000029A94260000-0x0000029A94280000-memory.dmp
            Download

            memory/1828-67-0x0000029A83BA0000-0x0000029A83BC0000-memory.dmp
            Download

            memory/1828-48-0x0000029A83A40000-0x0000029A83A60000-memory.dmp
            Download

            memory/1828-33-0x0000029A801E0000-0x0000029A802E0000-memory.dmp
            Download

            memory/2792-3-0x00007FF797960000-0x00007FF799524000-memory.dmp
            Download

            memory/2792-12-0x00007FF797F88000-0x00007FF79871D000-memory.dmp
            Download

            memory/2792-11-0x00007FF797960000-0x00007FF799524000-memory.dmp
            Download

            memory/2792-9-0x0000013831AD0000-0x0000013831AD1000-memory.dmp
            Download

            memory/2792-8-0x0000013831AD0000-0x0000013831AD1000-memory.dmp
            Download

            memory/2792-7-0x00007FF797960000-0x00007FF799524000-memory.dmp
            Download

            memory/2792-0-0x00007FF797F88000-0x00007FF79871D000-memory.dmp
            Download

            memory/2792-1-0x00007FFAE1A10000-0x00007FFAE1A12000-memory.dmp
            Download

            memory/2792-2-0x00007FFAE1A20000-0x00007FFAE1A22000-memory.dmp
            Download