Analysis

  • max time kernel
    102s
  • max time network
    35s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    18-11-2022 23:06

General

  • Target

    f6dd8a939ad1ddc046603d28592e75e5d6b5442a2bcc7623a66d53ddbe5484cd.xls

  • Size

    96KB

  • MD5

    17661a37f7de7beab087880040f1ebcd

  • SHA1

    7052641ae466d1079477a27c2366b9932077f648

  • SHA256

    f6dd8a939ad1ddc046603d28592e75e5d6b5442a2bcc7623a66d53ddbe5484cd

  • SHA512

    1335cdca4784f098a2b879c40aa87671f4e2270258647d76ee8ce10e7ba102a4272b61520766699ffe127a24d5d53a3f300d1dda1b0d90d3767fb7b99d56727b

  • SSDEEP

    1536:xRRRTtR4sk9CdVrER9m3GtKWKIZ95fvjupWVbrzQ7ITkPYlNA23yM88zcJtXwP/z:CKvWVbrzQ7ITk6HjIJtXw3z

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\f6dd8a939ad1ddc046603d28592e75e5d6b5442a2bcc7623a66d53ddbe5484cd.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:2024
    • 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:752
      • C:\Windows\SysWOW64\attrib.exe
        attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
        3⤵
        • Views/modifies file attributes
        PID:1664
    • 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:1480
    • 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:1444

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/752-59-0x0000000000000000-mapping.dmp

  • memory/1444-61-0x0000000000000000-mapping.dmp

  • memory/1480-60-0x0000000000000000-mapping.dmp

  • memory/1664-62-0x0000000000000000-mapping.dmp

  • memory/2024-54-0x000000002F8A1000-0x000000002F8A4000-memory.dmp

    Filesize

    12KB

  • memory/2024-55-0x0000000071AC1000-0x0000000071AC3000-memory.dmp

    Filesize

    8KB

  • memory/2024-56-0x000000005FFF0000-0x0000000060000000-memory.dmp

    Filesize

    64KB

  • memory/2024-57-0x0000000072AAD000-0x0000000072AB8000-memory.dmp

    Filesize

    44KB

  • memory/2024-58-0x00000000760D1000-0x00000000760D3000-memory.dmp

    Filesize

    8KB

  • memory/2024-63-0x0000000072AAD000-0x0000000072AB8000-memory.dmp

    Filesize

    44KB

  • memory/2024-64-0x000000005FFF0000-0x0000000060000000-memory.dmp

    Filesize

    64KB

  • memory/2024-65-0x0000000072AAD000-0x0000000072AB8000-memory.dmp

    Filesize

    44KB