Analysis

  • max time kernel
    100s
  • max time network
    45s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    02-10-2022 20:31

General

  • Target

    348fe1a8c108823f2d59a220b6ebc1f25ec880510eed7b92b7c87019e2c37303.xls

  • Size

    102KB

  • MD5

    72221e92226545ef348dbd98a30d5df0

  • SHA1

    c5535424d95708ccd090602e4a2657a5cbbf2d21

  • SHA256

    348fe1a8c108823f2d59a220b6ebc1f25ec880510eed7b92b7c87019e2c37303

  • SHA512

    f531655581de629f9e9232b749ae4d36ac4df8afeedabee713868c3614d1f9f15e2ba98e62583e619e16f3158d5a6e8d4435fe173f4e2e869f35ce12ce8a0113

  • SSDEEP

    1536:YBBBtZB4F3+/RSWVbrzQ7IdG7kR623wc88ScJtXwoqfWms:hWVbrzQ7Iuk9pjhJtXwHW

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\348fe1a8c108823f2d59a220b6ebc1f25ec880510eed7b92b7c87019e2c37303.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:1784
    • 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:1760
      • C:\Windows\SysWOW64\attrib.exe
        attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
        3⤵
        • Views/modifies file attributes
        PID:1556
    • 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:776
    • 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:472

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/472-221-0x0000000000000000-mapping.dmp

  • memory/776-220-0x0000000000000000-mapping.dmp

  • memory/1556-222-0x0000000000000000-mapping.dmp

  • memory/1760-219-0x0000000000000000-mapping.dmp

  • memory/1784-54-0x000000002F711000-0x000000002F714000-memory.dmp

    Filesize

    12KB

  • memory/1784-55-0x00000000711F1000-0x00000000711F3000-memory.dmp

    Filesize

    8KB

  • memory/1784-56-0x000000005FFF0000-0x0000000060000000-memory.dmp

    Filesize

    64KB

  • memory/1784-57-0x00000000721DD000-0x00000000721E8000-memory.dmp

    Filesize

    44KB

  • memory/1784-58-0x00000000753C1000-0x00000000753C3000-memory.dmp

    Filesize

    8KB

  • memory/1784-383-0x00000000721DD000-0x00000000721E8000-memory.dmp

    Filesize

    44KB

  • memory/1784-384-0x000000005FFF0000-0x0000000060000000-memory.dmp

    Filesize

    64KB

  • memory/1784-385-0x00000000721DD000-0x00000000721E8000-memory.dmp

    Filesize

    44KB