Analysis

  • max time kernel
    102s
  • max time network
    147s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20221111-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
  • submitted
    31-01-2023 17:35

General

  • Target

    18cf59a39f2bcba65624698a5333a6cc.xls

  • Size

    374KB

  • MD5

    18cf59a39f2bcba65624698a5333a6cc

  • SHA1

    e36fee0800a5db7af08f1543a674cc36b4500eb9

  • SHA256

    7d4ca9f0993cb838b6918739f45623d466cb98a2217195685372dd8d76785066

  • SHA512

    edb40398bcec969ca82274eb8ac16ba84b80f871fd17f73e4b84151d1a9ca52f960c7fb51167a72f890b4bccca1480eaa7f5a5f9744d0cf4d4de04488c7300ac

  • SSDEEP

    6144:2XGSLCvXuzqAsQ4/OEl7B5hiEPpXlou8xuJ1TBFWVAth:SvgE2j

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.

  • Checks processor information in registry 2 TTPs 3 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • NTFS ADS 1 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious use of SetWindowsHookEx 14 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs
  • Views/modifies file attributes 1 TTPs 1 IoCs

Processes

  • C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
    "C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\18cf59a39f2bcba65624698a5333a6cc.xls"
    1⤵
    • Checks processor information in registry
    • Enumerates system info in registry
    • NTFS ADS
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:4692
    • C:\Windows\system32\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:3500
      • C:\Windows\system32\attrib.exe
        attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
        3⤵
        • Views/modifies file attributes
        PID:484
    • C:\Windows\system32\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:2544
    • C:\Windows\system32\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:2792

Network

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Hidden Files and Directories

1
T1158

Defense Evasion

Hidden Files and Directories

1
T1158

Discovery

Query Registry

2
T1012

System Information Discovery

2
T1082

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/484-142-0x0000000000000000-mapping.dmp
  • memory/2544-140-0x0000000000000000-mapping.dmp
  • memory/2792-141-0x0000000000000000-mapping.dmp
  • memory/3500-139-0x0000000000000000-mapping.dmp
  • memory/4692-136-0x00007FFC713F0000-0x00007FFC71400000-memory.dmp
    Filesize

    64KB

  • memory/4692-137-0x00007FFC6F060000-0x00007FFC6F070000-memory.dmp
    Filesize

    64KB

  • memory/4692-138-0x00007FFC6F060000-0x00007FFC6F070000-memory.dmp
    Filesize

    64KB

  • memory/4692-132-0x00007FFC713F0000-0x00007FFC71400000-memory.dmp
    Filesize

    64KB

  • memory/4692-135-0x00007FFC713F0000-0x00007FFC71400000-memory.dmp
    Filesize

    64KB

  • memory/4692-134-0x00007FFC713F0000-0x00007FFC71400000-memory.dmp
    Filesize

    64KB

  • memory/4692-133-0x00007FFC713F0000-0x00007FFC71400000-memory.dmp
    Filesize

    64KB

  • memory/4692-143-0x000001651640F000-0x0000016516411000-memory.dmp
    Filesize

    8KB

  • memory/4692-145-0x00007FFC713F0000-0x00007FFC71400000-memory.dmp
    Filesize

    64KB

  • memory/4692-146-0x00007FFC713F0000-0x00007FFC71400000-memory.dmp
    Filesize

    64KB

  • memory/4692-147-0x00007FFC713F0000-0x00007FFC71400000-memory.dmp
    Filesize

    64KB

  • memory/4692-148-0x00007FFC713F0000-0x00007FFC71400000-memory.dmp
    Filesize

    64KB