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Analysis

  • max time kernel
    22s
  • max time network
    174s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    26/12/2023, 01:09

General

  • Target

    48115950de42a52863f630b4e3d0cc40.exe

  • Size

    512KB

  • MD5

    48115950de42a52863f630b4e3d0cc40

  • SHA1

    51471762d4e76a8a03f7f09caa9f76fad4b324d4

  • SHA256

    0e65a07ab1d1754df0712dece893e4e7bf98a8004e035187641b5093de08dffe

  • SHA512

    c52fd517af4c06478afe37a3073b35a19d1ebfe8f3c72fd4373278c1a8db89b75b86bf4df844b7f7e069b528fdf89ff98eda2fca2465b9c9dbd8b1b8e24692f5

  • SSDEEP

    6144:1VY0W0sVVZ/dkq5BCoFaJ2i5Lf24C07N5OvSLTUF6pQxI6Upe2cBnTu19bcodj6K:1gDhdkq5BCoC5LfWSLTUQpr2Zu19Qm5p

Malware Config

Signatures

  • Modifies visibility of file extensions in Explorer 2 TTPs 1 IoCs
  • Modifies visiblity of hidden/system files in Explorer 2 TTPs 1 IoCs
  • Windows security bypass 2 TTPs 5 IoCs
  • Disables RegEdit via registry modification 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 5 IoCs
  • Windows security modification 2 TTPs 6 IoCs
  • Adds Run key to start application 2 TTPs 3 IoCs
  • Enumerates connected drives 3 TTPs 64 IoCs

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

  • Modifies WinLogon 2 TTPs 2 IoCs
  • AutoIT Executable 1 IoCs

    AutoIT scripts compiled to PE executables.

  • Drops file in System32 directory 9 IoCs
  • Drops file in Windows directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Modifies registry class 20 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of FindShellTrayWindow 18 IoCs
  • Suspicious use of SendNotifyMessage 18 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\48115950de42a52863f630b4e3d0cc40.exe
    "C:\Users\Admin\AppData\Local\Temp\48115950de42a52863f630b4e3d0cc40.exe"
    1⤵
    • Checks computer location settings
    • Drops file in System32 directory
    • Drops file in Windows directory
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of WriteProcessMemory
    PID:4480
    • C:\Windows\SysWOW64\trxzrayp.exe
      trxzrayp.exe
      2⤵
      • Executes dropped EXE
      • Enumerates connected drives
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      PID:696
    • C:\Windows\SysWOW64\qsjntqpfjuwkz.exe
      qsjntqpfjuwkz.exe
      2⤵
      • Executes dropped EXE
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      PID:2316
    • C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE
      "C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE" /n "C:\Windows\mydoc.rtf" /o ""
      2⤵
      • Suspicious use of SetWindowsHookEx
      PID:3996
    • C:\Windows\SysWOW64\mvxpwpzmtyrixwm.exe
      mvxpwpzmtyrixwm.exe
      2⤵
      • Executes dropped EXE
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      PID:4772
    • C:\Windows\SysWOW64\nzjyhjzvnh.exe
      nzjyhjzvnh.exe
      2⤵
      • Modifies visibility of file extensions in Explorer
      • Modifies visiblity of hidden/system files in Explorer
      • Windows security bypass
      • Disables RegEdit via registry modification
      • Executes dropped EXE
      • Windows security modification
      • Enumerates connected drives
      • Modifies WinLogon
      • Drops file in System32 directory
      • Modifies registry class
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      • Suspicious use of WriteProcessMemory
      PID:4656
  • C:\Windows\SysWOW64\trxzrayp.exe
    C:\Windows\system32\trxzrayp.exe
    1⤵
    • Executes dropped EXE
    • Enumerates connected drives
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    PID:1680

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • memory/3996-43-0x00007FFCEDFD0000-0x00007FFCEE1C5000-memory.dmp

    Filesize

    2.0MB

  • memory/3996-146-0x00007FFCAE050000-0x00007FFCAE060000-memory.dmp

    Filesize

    64KB

  • memory/3996-42-0x00007FFCAE050000-0x00007FFCAE060000-memory.dmp

    Filesize

    64KB

  • memory/3996-45-0x00007FFCEDFD0000-0x00007FFCEE1C5000-memory.dmp

    Filesize

    2.0MB

  • memory/3996-44-0x00007FFCAE050000-0x00007FFCAE060000-memory.dmp

    Filesize

    64KB

  • memory/3996-47-0x00007FFCEDFD0000-0x00007FFCEE1C5000-memory.dmp

    Filesize

    2.0MB

  • memory/3996-48-0x00007FFCEDFD0000-0x00007FFCEE1C5000-memory.dmp

    Filesize

    2.0MB

  • memory/3996-49-0x00007FFCEDFD0000-0x00007FFCEE1C5000-memory.dmp

    Filesize

    2.0MB

  • memory/3996-52-0x00007FFCAB9B0000-0x00007FFCAB9C0000-memory.dmp

    Filesize

    64KB

  • memory/3996-51-0x00007FFCEDFD0000-0x00007FFCEE1C5000-memory.dmp

    Filesize

    2.0MB

  • memory/3996-50-0x00007FFCEDFD0000-0x00007FFCEE1C5000-memory.dmp

    Filesize

    2.0MB

  • memory/3996-46-0x00007FFCEDFD0000-0x00007FFCEE1C5000-memory.dmp

    Filesize

    2.0MB

  • memory/3996-36-0x00007FFCAE050000-0x00007FFCAE060000-memory.dmp

    Filesize

    64KB

  • memory/3996-142-0x00007FFCAE050000-0x00007FFCAE060000-memory.dmp

    Filesize

    64KB

  • memory/3996-120-0x00007FFCEDFD0000-0x00007FFCEE1C5000-memory.dmp

    Filesize

    2.0MB

  • memory/3996-38-0x00007FFCEDFD0000-0x00007FFCEE1C5000-memory.dmp

    Filesize

    2.0MB

  • memory/3996-37-0x00007FFCAE050000-0x00007FFCAE060000-memory.dmp

    Filesize

    64KB

  • memory/3996-53-0x00007FFCAB9B0000-0x00007FFCAB9C0000-memory.dmp

    Filesize

    64KB

  • memory/3996-39-0x00007FFCAE050000-0x00007FFCAE060000-memory.dmp

    Filesize

    64KB

  • memory/3996-144-0x00007FFCAE050000-0x00007FFCAE060000-memory.dmp

    Filesize

    64KB

  • memory/3996-147-0x00007FFCEDFD0000-0x00007FFCEE1C5000-memory.dmp

    Filesize

    2.0MB

  • memory/3996-148-0x00007FFCEDFD0000-0x00007FFCEE1C5000-memory.dmp

    Filesize

    2.0MB

  • memory/3996-41-0x00007FFCEDFD0000-0x00007FFCEE1C5000-memory.dmp

    Filesize

    2.0MB

  • memory/3996-145-0x00007FFCEDFD0000-0x00007FFCEE1C5000-memory.dmp

    Filesize

    2.0MB

  • memory/3996-143-0x00007FFCAE050000-0x00007FFCAE060000-memory.dmp

    Filesize

    64KB

  • memory/4480-0-0x0000000000400000-0x0000000000496000-memory.dmp

    Filesize

    600KB