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Analysis

  • max time kernel
    113s
  • max time network
    47s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    01/12/2022, 16:04

General

  • Target

    31f727b537369242551b7238d9509fca9701b36c423c2d452f241e5caf581f3f.xls

  • Size

    99KB

  • MD5

    e997a0cd4dd33f34e44d2b3be1cff1f1

  • SHA1

    58a410ee53b87cff7b602d406baa6f8055bbedd5

  • SHA256

    31f727b537369242551b7238d9509fca9701b36c423c2d452f241e5caf581f3f

  • SHA512

    33eead59eed7043bc338a758fcb0b890f560c90d729bf9fab8b2096de79b91e7729b04b4f1e640aafc26e4398aa03f6ddb722fe497b1406096fe880be1d57584

  • SSDEEP

    3072:pvaqeAazRcWVbrzQ7IscDukZ7jn0fX4gD:pvaqefwc4

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 5 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\31f727b537369242551b7238d9509fca9701b36c423c2d452f241e5caf581f3f.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:2008
    • 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:524
      • C:\Windows\SysWOW64\attrib.exe
        attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
        3⤵
        • Views/modifies file attributes
        PID:1512
    • 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:1720
    • 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:1784

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/2008-54-0x000000002F8A1000-0x000000002F8A4000-memory.dmp

    Filesize

    12KB

  • memory/2008-55-0x00000000711A1000-0x00000000711A3000-memory.dmp

    Filesize

    8KB

  • memory/2008-56-0x000000005FFF0000-0x0000000060000000-memory.dmp

    Filesize

    64KB

  • memory/2008-57-0x000000007218D000-0x0000000072198000-memory.dmp

    Filesize

    44KB

  • memory/2008-58-0x0000000075A81000-0x0000000075A83000-memory.dmp

    Filesize

    8KB

  • memory/2008-223-0x000000007218D000-0x0000000072198000-memory.dmp

    Filesize

    44KB

  • memory/2008-384-0x000000005FFF0000-0x0000000060000000-memory.dmp

    Filesize

    64KB

  • memory/2008-385-0x000000007218D000-0x0000000072198000-memory.dmp

    Filesize

    44KB