Overview

overview

9

Static

static

3

prismacrack.exe

windows10-2004-x64

9

prismacrack.exe

windows11-21h2-x64

9

Analysis

  • user interaction
    yes
  • max time kernel
    149s
  • max time network
    153s
  • platform
    windows11-21h2_x64
  • resource
    win11-20260513-en
  • resource tags

    arch:x64arch:x86image:win11-20260513-enlocale:en-usos:windows11-21h2-x64systemwindows
  • submitted
    27/05/2026, 16:22

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General

  • Target
    prismacrack.exe
  • Size 8.8MB
  • Sample260527-tvmwnact2n
  • SHA256 b10d8f52d33b26e45dd479dc52df7a71a493d85366e8024c0c6c6f6efb2c92a5
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
bootkitdefense_evasionpersistencetrojan

Malware Config

Signatures

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

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

  • Checks whether UAC is enabled 1 TTPs 1 IoCs
    defense_evasiontrojan
  • Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs

    Bootkits write to the MBR to gain persistence at a level below the operating system.

    bootkitpersistence
  • Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\prismacrack.exe
    "C:\Users\Admin\AppData\Local\Temp\prismacrack.exe"
    1⤵
    • Identifies VirtualBox via ACPI registry values (likely anti-VM)
    • Checks BIOS information in registry
    • Checks whether UAC is enabled
    • Writes to the Master Boot Record (MBR)
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:5500
    • C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c certutil -hashfile "C:\Users\Admin\AppData\Local\Temp\prismacrack.exe" MD5 | find /i /v "md5" | find /i /v "certutil"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:5944
      • C:\Windows\system32\certutil.exe
        certutil -hashfile "C:\Users\Admin\AppData\Local\Temp\prismacrack.exe" MD5
        3⤵
          PID:6140
        • C:\Windows\system32\find.exe
          find /i /v "md5"
          3⤵
            PID:3740
          • C:\Windows\system32\find.exe
            find /i /v "certutil"
            3⤵
              PID:5188
        • C:\Windows\system32\werfault.exe
          werfault.exe /h /shared Global\704d69f2d57e463dac2d74f8ed761169 /t 5636 /p 5500
          1⤵
            PID:3520

          Network

                MITRE ATT&CK Enterprise v16

                Replay Monitor

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                Downloads

                memory/5500-0-0x00007FF6F0E30000-0x00007FF6F16FB000-memory.dmp
                Download

                memory/5500-2-0x00007FF6F0E30000-0x00007FF6F16FB000-memory.dmp
                Download

                memory/5500-4-0x00007FF6F0E30000-0x00007FF6F16FB000-memory.dmp
                Download