Analysis

  • max time kernel
    105s
  • max time network
    55s
  • platform
    windows7_x64
  • resource
    win7-20220901-en
  • resource tags

    arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
  • submitted
    01/12/2022, 10:41

General

  • Target

    41acb4fe7e0411eebc325bad8d078f96567458497868cef2b25b98d23d1ecbdc.xls

  • Size

    107KB

  • MD5

    a62a3bf1bfa0d6ebb91dc6e3e7fb4f3e

  • SHA1

    9444676ccfff59d91e1290dccd3bc444e741321f

  • SHA256

    41acb4fe7e0411eebc325bad8d078f96567458497868cef2b25b98d23d1ecbdc

  • SHA512

    f24cc55eca20eafd7856d269be47a013e5f970c939c3b3a9c8e0f6323d2cd88088f31d2d62a2eb7ea39a00ef8fd47b3fa28f461e61b6c55f26c3aadc007f81ab

  • SSDEEP

    1536:chhhNnshmKyDj0zn4YhDLS15iNzlik9nhFeMyz2eXW8TgeY3GG8aMBWVbrzQ7ITq:0MyfYYWVbrzQ7ITk8u/MJtXwsdHG

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 4 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\41acb4fe7e0411eebc325bad8d078f96567458497868cef2b25b98d23d1ecbdc.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:1308
    • 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:1908
      • C:\Windows\SysWOW64\attrib.exe
        attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
        3⤵
        • Views/modifies file attributes
        PID:1344
    • 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:1036
    • 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:1504

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/1308-73-0x000000000052B000-0x000000000052F000-memory.dmp

    Filesize

    16KB

  • memory/1308-71-0x000000000052B000-0x000000000052F000-memory.dmp

    Filesize

    16KB

  • memory/1308-57-0x0000000071C8D000-0x0000000071C98000-memory.dmp

    Filesize

    44KB

  • memory/1308-58-0x0000000074DA1000-0x0000000074DA3000-memory.dmp

    Filesize

    8KB

  • memory/1308-59-0x0000000000525000-0x000000000052B000-memory.dmp

    Filesize

    24KB

  • memory/1308-60-0x0000000000525000-0x000000000052B000-memory.dmp

    Filesize

    24KB

  • memory/1308-64-0x0000000000525000-0x000000000052B000-memory.dmp

    Filesize

    24KB

  • memory/1308-63-0x0000000000525000-0x000000000052B000-memory.dmp

    Filesize

    24KB

  • memory/1308-62-0x0000000000525000-0x000000000052B000-memory.dmp

    Filesize

    24KB

  • memory/1308-61-0x0000000000525000-0x000000000052B000-memory.dmp

    Filesize

    24KB

  • memory/1308-65-0x000000000052B000-0x000000000052F000-memory.dmp

    Filesize

    16KB

  • memory/1308-66-0x000000000052B000-0x000000000052F000-memory.dmp

    Filesize

    16KB

  • memory/1308-67-0x000000000052B000-0x000000000052F000-memory.dmp

    Filesize

    16KB

  • memory/1308-70-0x000000000052B000-0x000000000052F000-memory.dmp

    Filesize

    16KB

  • memory/1308-54-0x000000002F5E1000-0x000000002F5E4000-memory.dmp

    Filesize

    12KB

  • memory/1308-69-0x000000000052B000-0x000000000052F000-memory.dmp

    Filesize

    16KB

  • memory/1308-68-0x000000000052B000-0x000000000052F000-memory.dmp

    Filesize

    16KB

  • memory/1308-74-0x000000000052B000-0x000000000052F000-memory.dmp

    Filesize

    16KB

  • memory/1308-56-0x000000005FFF0000-0x0000000060000000-memory.dmp

    Filesize

    64KB

  • memory/1308-75-0x000000000052B000-0x000000000052F000-memory.dmp

    Filesize

    16KB

  • memory/1308-80-0x000000000052B000-0x000000000052F000-memory.dmp

    Filesize

    16KB

  • memory/1308-78-0x000000000052B000-0x000000000052F000-memory.dmp

    Filesize

    16KB

  • memory/1308-83-0x000000000052B000-0x000000000052F000-memory.dmp

    Filesize

    16KB

  • memory/1308-82-0x000000000052B000-0x000000000052F000-memory.dmp

    Filesize

    16KB

  • memory/1308-81-0x000000000052B000-0x000000000052F000-memory.dmp

    Filesize

    16KB

  • memory/1308-72-0x000000000052B000-0x000000000052F000-memory.dmp

    Filesize

    16KB

  • memory/1308-79-0x000000000052B000-0x000000000052F000-memory.dmp

    Filesize

    16KB

  • memory/1308-77-0x000000000052B000-0x000000000052F000-memory.dmp

    Filesize

    16KB

  • memory/1308-76-0x000000000052B000-0x000000000052F000-memory.dmp

    Filesize

    16KB

  • memory/1308-85-0x000000000052B000-0x000000000052F000-memory.dmp

    Filesize

    16KB

  • memory/1308-86-0x000000000052B000-0x000000000052F000-memory.dmp

    Filesize

    16KB

  • memory/1308-84-0x000000000052B000-0x000000000052F000-memory.dmp

    Filesize

    16KB

  • memory/1308-87-0x000000000052B000-0x000000000052F000-memory.dmp

    Filesize

    16KB

  • memory/1308-109-0x000000000052B000-0x000000000052F000-memory.dmp

    Filesize

    16KB

  • memory/1308-385-0x0000000071C8D000-0x0000000071C98000-memory.dmp

    Filesize

    44KB

  • memory/1308-55-0x0000000070CA1000-0x0000000070CA3000-memory.dmp

    Filesize

    8KB

  • memory/1308-383-0x0000000071C8D000-0x0000000071C98000-memory.dmp

    Filesize

    44KB