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Analysis

  • max time kernel
    136s
  • max time network
    146s
  • 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, 17:36

General

  • Target

    c59cfc540618526b2233ea40f02ba57f.xls

  • Size

    389KB

  • MD5

    c59cfc540618526b2233ea40f02ba57f

  • SHA1

    399a21faf44443397d514abb7f44e2c44286e2a2

  • SHA256

    10714e5e2e38c5d10939b029a59f8960e41d4ed9acffdffdcb1759894ca3ca19

  • SHA512

    503301b3dd0a8aa56a22755a2e626e6ccb2ba780e7c3891f91fff1bf8cfac18461ab1e29175dd9fb924aa444a1725d3f30843479156e5529edaea433eaf1cb39

  • SSDEEP

    6144:7XGSLCvXuzqAsQ4/OEl7B5hiEPpXlou8xi/1TBFWVh3c:RvmEns

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 FindShellTrayWindow 2 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\c59cfc540618526b2233ea40f02ba57f.xls"
    1⤵
    • Checks processor information in registry
    • Enumerates system info in registry
    • NTFS ADS
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1232
    • 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:2556
      • C:\Windows\system32\attrib.exe
        attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
        3⤵
        • Views/modifies file attributes
        PID:1280
    • 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:2064
    • 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:1888

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/1232-138-0x00007FFF58060000-0x00007FFF58070000-memory.dmp

    Filesize

    64KB

  • memory/1232-144-0x00007FFF5A410000-0x00007FFF5A420000-memory.dmp

    Filesize

    64KB

  • memory/1232-134-0x00007FFF5A410000-0x00007FFF5A420000-memory.dmp

    Filesize

    64KB

  • memory/1232-135-0x00007FFF5A410000-0x00007FFF5A420000-memory.dmp

    Filesize

    64KB

  • memory/1232-136-0x00007FFF5A410000-0x00007FFF5A420000-memory.dmp

    Filesize

    64KB

  • memory/1232-137-0x00007FFF58060000-0x00007FFF58070000-memory.dmp

    Filesize

    64KB

  • memory/1232-133-0x00007FFF5A410000-0x00007FFF5A420000-memory.dmp

    Filesize

    64KB

  • memory/1232-147-0x00007FFF5A410000-0x00007FFF5A420000-memory.dmp

    Filesize

    64KB

  • memory/1232-132-0x00007FFF5A410000-0x00007FFF5A420000-memory.dmp

    Filesize

    64KB

  • memory/1232-146-0x00007FFF5A410000-0x00007FFF5A420000-memory.dmp

    Filesize

    64KB

  • memory/1232-145-0x00007FFF5A410000-0x00007FFF5A420000-memory.dmp

    Filesize

    64KB