Analysis

  • max time kernel
    114s
  • max time network
    31s
  • 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

    79cdecfc14b0566489864751be9b10d5a218bd98e9a1da60b247221f41a9a34e.xls

  • Size

    121KB

  • MD5

    26ae636bdf8fc441e9ca85845048ca40

  • SHA1

    ab65905a6b968cb32eef6800052a94d11716d1f0

  • SHA256

    79cdecfc14b0566489864751be9b10d5a218bd98e9a1da60b247221f41a9a34e

  • SHA512

    efa6b686fbb94b78d28de8c32008bb09ae3f5536f0ee87de3dae4931c90b532f6765da6b599d35989e85ecf6ffc50e98f335bbd65b233aca4e611ddcf44be302

  • SSDEEP

    1536:6AuuuURnmp4NNvPWVbrzQ7ITkFRcD23k1UcJtXwWnd1K2k:VmmWVbrzQ7ITkF/EXJtXwA1Nk

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\79cdecfc14b0566489864751be9b10d5a218bd98e9a1da60b247221f41a9a34e.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:1684
    • 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:1472
      • 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:1316
    • 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:1820

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/1316-66-0x0000000000000000-mapping.dmp

  • memory/1472-65-0x0000000000000000-mapping.dmp

  • memory/1664-68-0x0000000000000000-mapping.dmp

  • memory/1684-54-0x000000002F181000-0x000000002F184000-memory.dmp

    Filesize

    12KB

  • memory/1684-55-0x00000000714D1000-0x00000000714D3000-memory.dmp

    Filesize

    8KB

  • memory/1684-56-0x000000005FFF0000-0x0000000060000000-memory.dmp

    Filesize

    64KB

  • memory/1684-57-0x0000000075531000-0x0000000075533000-memory.dmp

    Filesize

    8KB

  • memory/1684-58-0x00000000724BD000-0x00000000724C8000-memory.dmp

    Filesize

    44KB

  • memory/1684-69-0x00000000724BD000-0x00000000724C8000-memory.dmp

    Filesize

    44KB

  • memory/1684-76-0x000000005FFF0000-0x0000000060000000-memory.dmp

    Filesize

    64KB

  • memory/1684-77-0x00000000724BD000-0x00000000724C8000-memory.dmp

    Filesize

    44KB

  • memory/1820-67-0x0000000000000000-mapping.dmp