Analysis

  • max time kernel
    150s
  • max time network
    95s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240611-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240611-enlocale:en-usos:windows10-2004-x64system
  • submitted
    16-06-2024 23:48

General

  • Target

    8f13b266dba9ff242106a321be847263bd5b9f8c50109abb02e182b09fb722fd.exe

  • Size

    2.5MB

  • MD5

    38b0a3344a4c27382d09d1d2b2488039

  • SHA1

    9884bbeb3e2310f8f17a2d801c63793ee526c8b8

  • SHA256

    8f13b266dba9ff242106a321be847263bd5b9f8c50109abb02e182b09fb722fd

  • SHA512

    937b233dd90600a33de4e1f13ecbbcd30431de5c32445c35da55c4bd9fdba0aadafb9803192114455f3bd74888e9aa885a10dfa3e6b964c15607b10f2331fdf8

  • SSDEEP

    49152:gxmvumkQ9lY9sgUXdTPSxdQ8KX75IyuWuCjcCqWOyxB:gxx9NUFkQx753uWuCyyxB

Malware Config

Signatures

  • Modifies visiblity of hidden/system files in Explorer 2 TTPs 2 IoCs
  • Detects executables packed with Themida 18 IoCs
  • Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 5 IoCs
  • Checks BIOS information in registry 2 TTPs 10 IoCs

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

  • Executes dropped EXE 4 IoCs
  • Themida packer 18 IoCs

    Detects Themida, an advanced Windows software protection system.

  • Adds Run key to start application 2 TTPs 4 IoCs
  • Checks whether UAC is enabled 1 TTPs 5 IoCs
  • Drops file in System32 directory 2 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 5 IoCs
  • Drops file in Windows directory 4 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 2 IoCs
  • Suspicious use of SetWindowsHookEx 10 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\8f13b266dba9ff242106a321be847263bd5b9f8c50109abb02e182b09fb722fd.exe
    "C:\Users\Admin\AppData\Local\Temp\8f13b266dba9ff242106a321be847263bd5b9f8c50109abb02e182b09fb722fd.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
    • Drops file in Windows directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1212
    • \??\c:\windows\resources\themes\explorer.exe
      c:\windows\resources\themes\explorer.exe
      2⤵
      • Modifies visiblity of hidden/system files in Explorer
      • Identifies VirtualBox via ACPI registry values (likely anti-VM)
      • Checks BIOS information in registry
      • Executes dropped EXE
      • Adds Run key to start application
      • Checks whether UAC is enabled
      • Drops file in System32 directory
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • Drops file in Windows directory
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:1660
      • \??\c:\windows\resources\spoolsv.exe
        c:\windows\resources\spoolsv.exe SE
        3⤵
        • Identifies VirtualBox via ACPI registry values (likely anti-VM)
        • Checks BIOS information in registry
        • Executes dropped EXE
        • Checks whether UAC is enabled
        • Suspicious use of NtSetInformationThreadHideFromDebugger
        • Drops file in Windows directory
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:5012
        • \??\c:\windows\resources\svchost.exe
          c:\windows\resources\svchost.exe
          4⤵
          • Modifies visiblity of hidden/system files in Explorer
          • Identifies VirtualBox via ACPI registry values (likely anti-VM)
          • Checks BIOS information in registry
          • Executes dropped EXE
          • Adds Run key to start application
          • Checks whether UAC is enabled
          • Drops file in System32 directory
          • Suspicious use of NtSetInformationThreadHideFromDebugger
          • Suspicious behavior: GetForegroundWindowSpam
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          PID:720
          • \??\c:\windows\resources\spoolsv.exe
            c:\windows\resources\spoolsv.exe PR
            5⤵
            • Identifies VirtualBox via ACPI registry values (likely anti-VM)
            • Checks BIOS information in registry
            • Executes dropped EXE
            • Checks whether UAC is enabled
            • Suspicious use of NtSetInformationThreadHideFromDebugger
            • Suspicious use of SetWindowsHookEx
            PID:2344

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Windows\Resources\Themes\explorer.exe

    Filesize

    2.5MB

    MD5

    e6b9e4e2f2e7a6c01454ec313abd5418

    SHA1

    0969cb1e8b2712583475f8c5a89a14bf7ca614c2

    SHA256

    e1e61c379ff1c4517753c401e8e9e8babbf6f44f1b79cd4bbbf032e6d441df63

    SHA512

    d4c82670a28f368ebe4eee232e2837a1e85e18e216499c6338c6667c794d6b531d63d3ae761552efead0eb85c32abff6b0521462ed0ffa3b33dda80e0454740b

  • C:\Windows\Resources\spoolsv.exe

    Filesize

    2.5MB

    MD5

    8a60f054b553b69862e4b25fd3e190a0

    SHA1

    79c30b2d97de9280ca02bd7ab6d4c334d555582a

    SHA256

    b26bfd058cf7df9d895e60b910cc7ae44f681845b310e544fda0c093f02af574

    SHA512

    6500bd391128cccbd6019106391b1b76d5ed7f5f18114f850742884f921226ebec895764cc2b5182ff18a5f4659fdbda2e37fd1165018631d9a057931e2a8ef1

  • C:\Windows\Resources\svchost.exe

    Filesize

    2.5MB

    MD5

    aa2b9d59f6c736c6d7d4298c1bc7c113

    SHA1

    1a63d5a06eb4515a2f0b0cf7739187c7f94be68e

    SHA256

    53a82a8b9d594a77f89458f86f0116e10629827d1087e26f4a449887d470b5e8

    SHA512

    8b6d1bcfe9965b098bd545eff3b31fdda3ea194533e879ddb970a13469426331b3a31061aa741b59ff89a898a422c8c334e9caa5229d4a89cc906766d66bb24f

  • memory/720-55-0x0000000000400000-0x0000000000A0E000-memory.dmp

    Filesize

    6.1MB

  • memory/720-51-0x0000000000400000-0x0000000000A0E000-memory.dmp

    Filesize

    6.1MB

  • memory/720-28-0x0000000000400000-0x0000000000A0E000-memory.dmp

    Filesize

    6.1MB

  • memory/720-44-0x0000000000400000-0x0000000000A0E000-memory.dmp

    Filesize

    6.1MB

  • memory/1212-0-0x0000000000400000-0x0000000000A0E000-memory.dmp

    Filesize

    6.1MB

  • memory/1212-1-0x00000000770C4000-0x00000000770C6000-memory.dmp

    Filesize

    8KB

  • memory/1212-42-0x0000000000400000-0x0000000000A0E000-memory.dmp

    Filesize

    6.1MB

  • memory/1660-43-0x0000000000400000-0x0000000000A0E000-memory.dmp

    Filesize

    6.1MB

  • memory/1660-45-0x0000000000400000-0x0000000000A0E000-memory.dmp

    Filesize

    6.1MB

  • memory/1660-10-0x0000000000400000-0x0000000000A0E000-memory.dmp

    Filesize

    6.1MB

  • memory/1660-56-0x0000000000400000-0x0000000000A0E000-memory.dmp

    Filesize

    6.1MB

  • memory/1660-64-0x0000000000400000-0x0000000000A0E000-memory.dmp

    Filesize

    6.1MB

  • memory/2344-38-0x0000000000400000-0x0000000000A0E000-memory.dmp

    Filesize

    6.1MB

  • memory/2344-33-0x0000000000400000-0x0000000000A0E000-memory.dmp

    Filesize

    6.1MB

  • memory/5012-41-0x0000000000400000-0x0000000000A0E000-memory.dmp

    Filesize

    6.1MB

  • memory/5012-19-0x0000000000400000-0x0000000000A0E000-memory.dmp

    Filesize

    6.1MB