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Analysis

  • max time kernel
    102s
  • max time network
    33s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    14/02/2023, 19:31

General

  • Target

    201f6d54b339db3e7972279feeca2726.xls

  • Size

    182KB

  • MD5

    201f6d54b339db3e7972279feeca2726

  • SHA1

    9a8fcadf3a03846bff5f47a65254c0beb9a12f54

  • SHA256

    dbd47ca15fbb20a66916514bf43e589a47d7a84a6c26246d39e5c219c3bb9544

  • SHA512

    ddda097e84c2d395a4c1ffb3d34533d64a4b79f9a2808d4eed3db30bab3db1a73b6ca55346e686747bf61d2b412d44a8ea99c0d52fe8a9d1986029cc5e3405cb

  • SSDEEP

    3072:EOk3hOdsylKlgryzc4bNhZFGzE+cL2knX/QfeW7OglgAF3NRKE0JtXw7gQpRyT:EOk3hOdsylKlgryzc4bNhZF+E+W2knXS

Score
10/10

Malware Config

Signatures

  • Process spawned unexpected child process 3 IoCs

    This typically indicates the parent process was compromised via an exploit or macro.

  • Deletes itself 1 IoCs
  • Office loads VBA resources, possible macro or embedded object present
  • Enumerates system info in registry 2 TTPs 1 IoCs
  • Modifies Internet Explorer settings 1 TTPs 31 IoCs
  • Modifies registry class 64 IoCs
  • NTFS ADS 1 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: RenamesItself 1 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 20 IoCs
  • Views/modifies file attributes 1 TTPs 1 IoCs

Processes

  • C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE
    "C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE" /dde C:\Users\Admin\AppData\Local\Temp\201f6d54b339db3e7972279feeca2726.xls
    1⤵
    • Deletes itself
    • Enumerates system info in registry
    • Modifies Internet Explorer settings
    • Modifies registry class
    • NTFS ADS
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious behavior: RenamesItself
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1588
    • C:\Windows\splwow64.exe
      C:\Windows\splwow64.exe 12288
      2⤵
        PID:1776
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
        2⤵
        • Process spawned unexpected child process
        • Suspicious use of WriteProcessMemory
        PID:1884
        • C:\Windows\SysWOW64\attrib.exe
          attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
          3⤵
          • Views/modifies file attributes
          PID:1380
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c Del /F /Q "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
        2⤵
        • Process spawned unexpected child process
        PID:532
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c RD /S /Q "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
        2⤵
        • Process spawned unexpected child process
        PID:1456

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/1588-58-0x0000000075BE1000-0x0000000075BE3000-memory.dmp

      Filesize

      8KB

    • memory/1588-95-0x000000006C451000-0x000000006C453000-memory.dmp

      Filesize

      8KB

    • memory/1588-99-0x00000000725CD000-0x00000000725D8000-memory.dmp

      Filesize

      44KB

    • memory/1588-98-0x000000005FFF0000-0x0000000060000000-memory.dmp

      Filesize

      64KB

    • memory/1588-97-0x0000000005C10000-0x0000000005D10000-memory.dmp

      Filesize

      1024KB

    • memory/1588-57-0x00000000725CD000-0x00000000725D8000-memory.dmp

      Filesize

      44KB

    • memory/1588-56-0x000000005FFF0000-0x0000000060000000-memory.dmp

      Filesize

      64KB

    • memory/1588-55-0x00000000715E1000-0x00000000715E3000-memory.dmp

      Filesize

      8KB

    • memory/1588-93-0x0000000005C10000-0x0000000005D10000-memory.dmp

      Filesize

      1024KB

    • memory/1588-94-0x0000000005C10000-0x0000000005D10000-memory.dmp

      Filesize

      1024KB

    • memory/1588-54-0x000000002FEF1000-0x000000002FEF4000-memory.dmp

      Filesize

      12KB

    • memory/1588-96-0x00000000725CD000-0x00000000725D8000-memory.dmp

      Filesize

      44KB

    • memory/1776-60-0x000007FEFBD41000-0x000007FEFBD43000-memory.dmp

      Filesize

      8KB