Analysis

  • max time kernel
    114s
  • max time network
    45s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    01/12/2022, 10:41

General

  • Target

    7f4bdb9194381d0717bf53d0bc4c0b88d34e76a241b41d2bfbc8ca37ceebbdfd.xls

  • Size

    76KB

  • MD5

    2f388bedff07b14442799bfce4ac42b0

  • SHA1

    9c038f4012ff1739dfab72e9ce68e6270f2b8b5c

  • SHA256

    7f4bdb9194381d0717bf53d0bc4c0b88d34e76a241b41d2bfbc8ca37ceebbdfd

  • SHA512

    fdb1d576f9f7fb28f86be495e9bba62d7d56ce7bcae64c8bf1bd0e8eff4c2012bea8715cead2e5847f98331215d7ff4b17998b710dfac08919da9b7751e49c19

  • SSDEEP

    1536:IBBBYlQqM3+q7ljEE2jcc0lbxOqTgZwIhY7nJdJoOd7cJtXwtF:aN2jcc0lbxOKA2AJtXwt

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 9 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\7f4bdb9194381d0717bf53d0bc4c0b88d34e76a241b41d2bfbc8ca37ceebbdfd.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:1348
    • 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:1592
      • C:\Windows\SysWOW64\attrib.exe
        attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
        3⤵
        • Views/modifies file attributes
        PID:324
    • 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:1704
    • 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:1768

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/1348-54-0x000000002F991000-0x000000002F994000-memory.dmp

    Filesize

    12KB

  • memory/1348-55-0x00000000710E1000-0x00000000710E3000-memory.dmp

    Filesize

    8KB

  • memory/1348-56-0x000000005FFF0000-0x0000000060000000-memory.dmp

    Filesize

    64KB

  • memory/1348-57-0x00000000720CD000-0x00000000720D8000-memory.dmp

    Filesize

    44KB

  • memory/1348-58-0x00000000750A1000-0x00000000750A3000-memory.dmp

    Filesize

    8KB

  • memory/1348-59-0x00000000720CD000-0x00000000720D8000-memory.dmp

    Filesize

    44KB

  • memory/1348-409-0x000000005FFF0000-0x0000000060000000-memory.dmp

    Filesize

    64KB

  • memory/1348-410-0x00000000720CD000-0x00000000720D8000-memory.dmp

    Filesize

    44KB