Analysis

  • max time kernel
    100s
  • max time network
    46s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    18-09-2022 22:31

General

  • Target

    32bb8c4b3a2d04dcc0ce32d67fd159663a0bc790f6f240b56b60c24b9f2f935c.xls

  • Size

    424KB

  • MD5

    1380ff5db21e320b7cf1e041c418a889

  • SHA1

    2e3d413e09f5f1d8f5e43678e907bcec46b62e3f

  • SHA256

    32bb8c4b3a2d04dcc0ce32d67fd159663a0bc790f6f240b56b60c24b9f2f935c

  • SHA512

    a2322ec61d0998189f29da1ef737b3954c45d4b8da08f725c799f2b9f8d5afe668d55c1cb83c4a0f89453c2d8c63084c789db48990e42d75b1d78d3395dae753

  • SSDEEP

    6144:uQn6c7yRms1H757aZM3F1MKyWmrAETCCqv54/2+F9U4BvcE3:QCqvG+iWdU

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 SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 16 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\32bb8c4b3a2d04dcc0ce32d67fd159663a0bc790f6f240b56b60c24b9f2f935c.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 SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1924
    • 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:1136
      • C:\Windows\SysWOW64\attrib.exe
        attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
        3⤵
        • Views/modifies file attributes
        PID:1876
    • 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:964
    • 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:960

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/1924-58-0x0000000075811000-0x0000000075813000-memory.dmp

    Filesize

    8KB

  • memory/1924-65-0x000000000057D000-0x0000000000581000-memory.dmp

    Filesize

    16KB

  • memory/1924-61-0x000000000057D000-0x0000000000581000-memory.dmp

    Filesize

    16KB

  • memory/1924-60-0x000000000057D000-0x0000000000581000-memory.dmp

    Filesize

    16KB

  • memory/1924-63-0x000000000057D000-0x0000000000581000-memory.dmp

    Filesize

    16KB

  • memory/1924-62-0x000000000057D000-0x0000000000581000-memory.dmp

    Filesize

    16KB

  • memory/1924-64-0x000000000057D000-0x0000000000581000-memory.dmp

    Filesize

    16KB

  • memory/1924-59-0x000000000057D000-0x0000000000581000-memory.dmp

    Filesize

    16KB

  • memory/1924-54-0x000000002F0F1000-0x000000002F0F4000-memory.dmp

    Filesize

    12KB

  • memory/1924-57-0x0000000071F6D000-0x0000000071F78000-memory.dmp

    Filesize

    44KB

  • memory/1924-56-0x000000005FFF0000-0x0000000060000000-memory.dmp

    Filesize

    64KB

  • memory/1924-55-0x0000000070F81000-0x0000000070F83000-memory.dmp

    Filesize

    8KB

  • memory/1924-70-0x0000000071F6D000-0x0000000071F78000-memory.dmp

    Filesize

    44KB

  • memory/1924-71-0x000000005FFF0000-0x0000000060000000-memory.dmp

    Filesize

    64KB

  • memory/1924-72-0x0000000071F6D000-0x0000000071F78000-memory.dmp

    Filesize

    44KB