Analysis

  • max time kernel
    122s
  • max time network
    33s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    05-12-2022 14:22

General

  • Target

    d141fc911d8171737a3369d42f5aa8d31bd295f35e9cc08f65d77a1973c4f6d1.xls

  • Size

    107KB

  • MD5

    4de5b91ec111dbb6552fe69636000db2

  • SHA1

    8f2a7759c7137026c612268bfa061f0a33e84063

  • SHA256

    d141fc911d8171737a3369d42f5aa8d31bd295f35e9cc08f65d77a1973c4f6d1

  • SHA512

    a7178bcfc8ec2b651161612369779991b8214fda02cc9172361919ab016ad42023ba46fde1c1ff2df31fe2b8c54de30f4614eaada3822a9bc1daa2c202cab0bb

  • SSDEEP

    1536:igggMf/g4/OtvzLa6lKOJpgayrENdUcZ95lEkrWV0zQ7ITkPKCaQ62gxCOU/WwFc:wGWV0zQ7ITkPKg8DW/K

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\d141fc911d8171737a3369d42f5aa8d31bd295f35e9cc08f65d77a1973c4f6d1.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:1788
    • 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:520
      • C:\Windows\SysWOW64\attrib.exe
        attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
        3⤵
        • Views/modifies file attributes
        PID:1160
    • 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:552
    • 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/520-219-0x0000000000000000-mapping.dmp

  • memory/552-220-0x0000000000000000-mapping.dmp

  • memory/1160-223-0x0000000000000000-mapping.dmp

  • memory/1452-221-0x0000000000000000-mapping.dmp

  • memory/1788-80-0x000000000074A000-0x0000000000753000-memory.dmp

    Filesize

    36KB

  • memory/1788-85-0x000000000074A000-0x0000000000753000-memory.dmp

    Filesize

    36KB

  • memory/1788-66-0x000000000074A000-0x0000000000753000-memory.dmp

    Filesize

    36KB

  • memory/1788-67-0x000000000074A000-0x0000000000753000-memory.dmp

    Filesize

    36KB

  • memory/1788-68-0x000000000074A000-0x0000000000753000-memory.dmp

    Filesize

    36KB

  • memory/1788-71-0x000000000074A000-0x0000000000753000-memory.dmp

    Filesize

    36KB

  • memory/1788-70-0x000000000074A000-0x0000000000753000-memory.dmp

    Filesize

    36KB

  • memory/1788-69-0x000000000074A000-0x0000000000753000-memory.dmp

    Filesize

    36KB

  • memory/1788-74-0x000000000074A000-0x0000000000753000-memory.dmp

    Filesize

    36KB

  • memory/1788-83-0x000000000074A000-0x0000000000753000-memory.dmp

    Filesize

    36KB

  • memory/1788-82-0x000000000074A000-0x0000000000753000-memory.dmp

    Filesize

    36KB

  • memory/1788-81-0x000000000074A000-0x0000000000753000-memory.dmp

    Filesize

    36KB

  • memory/1788-54-0x000000002F371000-0x000000002F374000-memory.dmp

    Filesize

    12KB

  • memory/1788-79-0x000000000074A000-0x0000000000753000-memory.dmp

    Filesize

    36KB

  • memory/1788-86-0x000000000074A000-0x0000000000753000-memory.dmp

    Filesize

    36KB

  • memory/1788-65-0x000000000074A000-0x0000000000753000-memory.dmp

    Filesize

    36KB

  • memory/1788-84-0x000000000074A000-0x0000000000753000-memory.dmp

    Filesize

    36KB

  • memory/1788-78-0x000000000074A000-0x0000000000753000-memory.dmp

    Filesize

    36KB

  • memory/1788-77-0x000000000074A000-0x0000000000753000-memory.dmp

    Filesize

    36KB

  • memory/1788-76-0x000000000074A000-0x0000000000753000-memory.dmp

    Filesize

    36KB

  • memory/1788-75-0x000000000074A000-0x0000000000753000-memory.dmp

    Filesize

    36KB

  • memory/1788-73-0x000000000074A000-0x0000000000753000-memory.dmp

    Filesize

    36KB

  • memory/1788-72-0x000000000074A000-0x0000000000753000-memory.dmp

    Filesize

    36KB

  • memory/1788-87-0x000000000074A000-0x0000000000753000-memory.dmp

    Filesize

    36KB

  • memory/1788-109-0x000000000074A000-0x0000000000753000-memory.dmp

    Filesize

    36KB

  • memory/1788-58-0x0000000076411000-0x0000000076413000-memory.dmp

    Filesize

    8KB

  • memory/1788-57-0x0000000072CBD000-0x0000000072CC8000-memory.dmp

    Filesize

    44KB

  • memory/1788-56-0x000000005FFF0000-0x0000000060000000-memory.dmp

    Filesize

    64KB

  • memory/1788-222-0x0000000072CBD000-0x0000000072CC8000-memory.dmp

    Filesize

    44KB

  • memory/1788-55-0x0000000071CD1000-0x0000000071CD3000-memory.dmp

    Filesize

    8KB

  • memory/1788-385-0x0000000072CBD000-0x0000000072CC8000-memory.dmp

    Filesize

    44KB