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Analysis

  • max time kernel
    150s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    31/01/2023, 17:35

General

  • Target

    4c4dfd862696a77d4bb13e2b4d2748d3.xls

  • Size

    95KB

  • MD5

    4c4dfd862696a77d4bb13e2b4d2748d3

  • SHA1

    7ac7b3e22f0307f6a5fe682f9a92c1c09d5421f9

  • SHA256

    0c5dbda05771b14e69b7fa41e788ad7322a27ab47309470232f6d2f69c5cfeef

  • SHA512

    58945def5df7e78f2683d03f89b6b9bb3aea32876ae94281f3b583439fea0a3ce22e7a17dea9d84464075dbf1e8c7d61421b183ff5a846b249f6079f7d1d9ab7

  • SSDEEP

    1536:euuuoHPa4Rz/Sbj13z/vHfQse0Z95rt3rYMPaw2jcc0lbxOvTgEfoRt/WwF16Qm:Rt3iw2jcc0lbxOrxGphm

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 12 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\4c4dfd862696a77d4bb13e2b4d2748d3.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:4612
    • 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:1656
      • C:\Windows\system32\attrib.exe
        attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
        3⤵
        • Views/modifies file attributes
        PID:2732
    • 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:1812
    • 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:1304

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/4612-136-0x00007FFE83C30000-0x00007FFE83C40000-memory.dmp

    Filesize

    64KB

  • memory/4612-137-0x00007FFE81370000-0x00007FFE81380000-memory.dmp

    Filesize

    64KB

  • memory/4612-138-0x00007FFE81370000-0x00007FFE81380000-memory.dmp

    Filesize

    64KB

  • memory/4612-132-0x00007FFE83C30000-0x00007FFE83C40000-memory.dmp

    Filesize

    64KB

  • memory/4612-135-0x00007FFE83C30000-0x00007FFE83C40000-memory.dmp

    Filesize

    64KB

  • memory/4612-134-0x00007FFE83C30000-0x00007FFE83C40000-memory.dmp

    Filesize

    64KB

  • memory/4612-133-0x00007FFE83C30000-0x00007FFE83C40000-memory.dmp

    Filesize

    64KB

  • memory/4612-143-0x000001E9F2D7C000-0x000001E9F2D7E000-memory.dmp

    Filesize

    8KB

  • memory/4612-144-0x000001E9F2D7C000-0x000001E9F2D7E000-memory.dmp

    Filesize

    8KB

  • memory/4612-146-0x00007FFE83C30000-0x00007FFE83C40000-memory.dmp

    Filesize

    64KB

  • memory/4612-147-0x00007FFE83C30000-0x00007FFE83C40000-memory.dmp

    Filesize

    64KB

  • memory/4612-148-0x00007FFE83C30000-0x00007FFE83C40000-memory.dmp

    Filesize

    64KB

  • memory/4612-149-0x00007FFE83C30000-0x00007FFE83C40000-memory.dmp

    Filesize

    64KB