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Analysis

  • max time kernel
    103s
  • max time network
    39s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    18/09/2022, 22:32

General

  • Target

    23c02e00bc291b5580c99fd6dfcd86c040d94c060b59520a74542c2eeebc34b0.xls

  • Size

    222KB

  • MD5

    efc48d06191ae27545d136408d52ed23

  • SHA1

    0829c0cd0fc63040fca0cd25d7f4d23c9a94ef4b

  • SHA256

    23c02e00bc291b5580c99fd6dfcd86c040d94c060b59520a74542c2eeebc34b0

  • SHA512

    8719ef8766c8e6a6bbb96c274e080a6a45e871435e866579287193db2591dce599cfd6c9c3243b31389d0f0fdc5fb0f1c9fc736a9e2bb6c110f43c31d7c2bafc

  • SSDEEP

    6144:VPBFxEl1rQsrkqf+YfeUeWSY36+qcY8Ij:NBFxEvrVrkqf+YfzSY3TB

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\23c02e00bc291b5580c99fd6dfcd86c040d94c060b59520a74542c2eeebc34b0.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:1488
    • 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:1800
      • C:\Windows\SysWOW64\attrib.exe
        attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
        3⤵
        • Views/modifies file attributes
        PID:308
    • 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:1920
    • 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:1700

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/1488-54-0x000000002F6B1000-0x000000002F6B4000-memory.dmp

    Filesize

    12KB

  • memory/1488-55-0x00000000717F1000-0x00000000717F3000-memory.dmp

    Filesize

    8KB

  • memory/1488-56-0x000000005FFF0000-0x0000000060000000-memory.dmp

    Filesize

    64KB

  • memory/1488-57-0x00000000727DD000-0x00000000727E8000-memory.dmp

    Filesize

    44KB

  • memory/1488-58-0x0000000075AD1000-0x0000000075AD3000-memory.dmp

    Filesize

    8KB

  • memory/1488-383-0x00000000727DD000-0x00000000727E8000-memory.dmp

    Filesize

    44KB

  • memory/1488-384-0x000000005FFF0000-0x0000000060000000-memory.dmp

    Filesize

    64KB

  • memory/1488-385-0x00000000727DD000-0x00000000727E8000-memory.dmp

    Filesize

    44KB