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Analysis

  • max time kernel
    150s
  • max time network
    121s
  • platform
    windows7_x64
  • resource
    win7-20231129-en
  • resource tags

    arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
  • submitted
    25/12/2023, 15:22

General

  • Target

    28f8806a43c81ade4aded3b5adc6cde0.exe

  • Size

    512KB

  • MD5

    28f8806a43c81ade4aded3b5adc6cde0

  • SHA1

    acd51b1accf5f3a27c5cf7568e976fca4e3b9dcf

  • SHA256

    0150beb4a08d1cb109618ffea4545dd9a8727021133fe7fb784c7ab81cbbe8a7

  • SHA512

    7511497bf86e6ba03a83bd75252c97161b368967b5cd768a99708cca9c573b74f5c50b103216c23e43ab1569c78b036942079f6602b4a7b913962d0fb4eb9e1e

  • SSDEEP

    6144:1VY0W0sVVZ/dkq5BCoFaJ2i5Lf24C07N5OvSLTUF6pQxI6Upe2cBnTu19bcodj6c:1gDhdkq5BCoC5LfWSLTUQpr2Zu19Qm5f

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
  • Executes dropped EXE 5 IoCs
  • Loads dropped DLL 5 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • 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 5 IoCs

    AutoIT scripts compiled to PE executables.

  • Drops file in System32 directory 9 IoCs
  • Drops file in Program Files directory 22 IoCs
  • Drops file in Windows directory 5 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Office loads VBA resources, possible macro or embedded object present
  • Modifies Internet Explorer settings 1 TTPs 31 IoCs
  • Modifies registry class 64 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of FindShellTrayWindow 18 IoCs
  • Suspicious use of SendNotifyMessage 18 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 28 IoCs

Processes

  • C:\Windows\SysWOW64\bdeycwbvgczffia.exe
    bdeycwbvgczffia.exe
    1⤵
    • Executes dropped EXE
    • Adds Run key to start application
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    PID:2932
  • C:\Windows\SysWOW64\yatqpiic.exe
    C:\Windows\system32\yatqpiic.exe
    1⤵
    • Executes dropped EXE
    • Enumerates connected drives
    • Drops file in Program Files directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    PID:2940
  • C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE
    "C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE" /n "C:\Windows\mydoc.rtf"
    1⤵
    • Drops file in Windows directory
    • Modifies Internet Explorer settings
    • Modifies registry class
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2484
    • C:\Windows\splwow64.exe
      C:\Windows\splwow64.exe 12288
      2⤵
        PID:2888
    • C:\Windows\SysWOW64\mipgqcmbrrkll.exe
      mipgqcmbrrkll.exe
      1⤵
      • Executes dropped EXE
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      PID:2584
    • C:\Windows\SysWOW64\yatqpiic.exe
      yatqpiic.exe
      1⤵
      • Executes dropped EXE
      • Enumerates connected drives
      • Drops file in Program Files directory
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      PID:2284
    • C:\Windows\SysWOW64\rsqfldlerk.exe
      rsqfldlerk.exe
      1⤵
      • 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
      • Loads dropped DLL
      • 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:772
    • C:\Users\Admin\AppData\Local\Temp\28f8806a43c81ade4aded3b5adc6cde0.exe
      "C:\Users\Admin\AppData\Local\Temp\28f8806a43c81ade4aded3b5adc6cde0.exe"
      1⤵
      • Loads dropped DLL
      • 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:952

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Roaming\Microsoft\Templates\Normal.dotm

      Filesize

      20KB

      MD5

      d284edcd3c82f2bd1029e253aee9ea8b

      SHA1

      a0dace3f68b0917cf5cd2ea29c3f126a22f3236d

      SHA256

      046e91ad723921d8aecfb023c9109b8073b61051f2c4b74275db8ac2f947d650

      SHA512

      67fd628eda4d4206099a96a277395e8b12b5ae971baaa3758c092d1ccd26e2f8ffb4eb1b8e9e73b570d3fddf12cb0ccc269235b3bb8285226983aeef1c8f1d30

    • C:\Windows\SysWOW64\bdeycwbvgczffia.exe

      Filesize

      512KB

      MD5

      6bc7d4f37e044c69e099b97ad262f041

      SHA1

      f7fad4ea51d893f1972ee3db9d8abd71389c015d

      SHA256

      74c0ff904cb303c97307e25130fb40c818c85e1f779dc8454944601141711e83

      SHA512

      3bdbd635c0d2b246e9dd2792e7aca908dc34ba2bab71a10e10cfa19fc9e4368433498efadfec0afaa75d97663853a4d083ca33f311840135b9254876b90f7a92

    • C:\Windows\SysWOW64\rsqfldlerk.exe

      Filesize

      512KB

      MD5

      5e81e85dff0dbb81eb65a32167114a98

      SHA1

      b842ec53e954a8d7f4072ee33f664192e3f41210

      SHA256

      ceeeea963effe15048a3dec3a4a9011b075588302c6a6d66f642e0fb90e60e33

      SHA512

      65f76f5044544c1866bfcfef29f339104d2ba5ec1370f3a091c3ef39a2b1a904c6bcbf6c390938d9ae372eed7fddf0998cfe18b042a1298bdf6a7b070d821894

    • \Windows\SysWOW64\mipgqcmbrrkll.exe

      Filesize

      381KB

      MD5

      30aec9e0b33fbd99234328357879f812

      SHA1

      3c9d37139d4ccfe2b694afba9633170d0f510a92

      SHA256

      15aad0daaaeea2f1eb8d19a8999f42844b2885d6bef949f6787feba7dad46563

      SHA512

      2060f2cc8c90181dd0a9965f0ff3a94aece08c82c4a68454846f66778bc60dade3ba5ddc38be57311ff4a7bd78217b89a9cd09837eee4b5d9893277299dad415

    • memory/952-0-0x0000000000400000-0x0000000000496000-memory.dmp

      Filesize

      600KB

    • memory/2484-45-0x000000002F511000-0x000000002F512000-memory.dmp

      Filesize

      4KB

    • memory/2484-47-0x00000000713ED000-0x00000000713F8000-memory.dmp

      Filesize

      44KB

    • memory/2484-46-0x000000005FFF0000-0x0000000060000000-memory.dmp

      Filesize

      64KB

    • memory/2484-85-0x00000000713ED000-0x00000000713F8000-memory.dmp

      Filesize

      44KB

    • memory/2484-106-0x000000005FFF0000-0x0000000060000000-memory.dmp

      Filesize

      64KB