Analysis

  • max time kernel
    113s
  • max time network
    39s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    05-12-2022 14:23

General

  • Target

    b24cf24cab617f0e5e4b2dc206b61af9e5f20a33f75d27257547fb4131c285fe.xls

  • Size

    107KB

  • MD5

    ab983ee28a7b9d145440eb975b5c1c1f

  • SHA1

    930882ef6ac759326fb6789beba05c5a165cfd1a

  • SHA256

    b24cf24cab617f0e5e4b2dc206b61af9e5f20a33f75d27257547fb4131c285fe

  • SHA512

    079809cde7fb711ad551f9a99cedafdf453f16d7f15ca8bc5d6e4ae7ef3b092613a7abd4aecfb3cf7e718186ed04e605ba6989162cb03848d32e534c7345f843

  • SSDEEP

    1536:tUx999xlsB5pWMZjUSOWVbZwgYzQ7ITkR62lIn88ScJtXwRIM2M/MQnR+:tUUBSfWVby/zQ7ITk98jhJtXw95kOR+

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\b24cf24cab617f0e5e4b2dc206b61af9e5f20a33f75d27257547fb4131c285fe.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:836
    • 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:840
      • C:\Windows\SysWOW64\attrib.exe
        attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
        3⤵
        • Views/modifies file attributes
        PID:968
    • 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:616
    • 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:1452

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/836-223-0x00000000054F0000-0x00000000055F0000-memory.dmp

    Filesize

    1024KB

  • memory/836-57-0x00000000727DD000-0x00000000727E8000-memory.dmp

    Filesize

    44KB

  • memory/836-55-0x00000000717F1000-0x00000000717F3000-memory.dmp

    Filesize

    8KB

  • memory/836-391-0x000000005FFF0000-0x0000000060000000-memory.dmp

    Filesize

    64KB

  • memory/836-59-0x00000000727DD000-0x00000000727E8000-memory.dmp

    Filesize

    44KB

  • memory/836-220-0x00000000054F0000-0x00000000055F0000-memory.dmp

    Filesize

    1024KB

  • memory/836-221-0x00000000054F0000-0x00000000055F0000-memory.dmp

    Filesize

    1024KB

  • memory/836-54-0x000000002F781000-0x000000002F784000-memory.dmp

    Filesize

    12KB

  • memory/836-392-0x00000000727DD000-0x00000000727E8000-memory.dmp

    Filesize

    44KB

  • memory/836-56-0x000000005FFF0000-0x0000000060000000-memory.dmp

    Filesize

    64KB

  • memory/836-58-0x0000000075AD1000-0x0000000075AD3000-memory.dmp

    Filesize

    8KB

  • memory/836-390-0x00000000054F0000-0x00000000055F0000-memory.dmp

    Filesize

    1024KB

  • memory/836-271-0x00000000054F0000-0x00000000055F0000-memory.dmp

    Filesize

    1024KB

  • memory/836-388-0x00000000054F0000-0x00000000055F0000-memory.dmp

    Filesize

    1024KB

  • memory/836-389-0x00000000054F0000-0x00000000055F0000-memory.dmp

    Filesize

    1024KB