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Analysis

  • max time kernel
    101s
  • max time network
    137s
  • 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, 17:28

General

  • Target

    ca9141d70ac492e6adb61f3c7e14ed59.xls

  • Size

    289KB

  • MD5

    ca9141d70ac492e6adb61f3c7e14ed59

  • SHA1

    56ebf9533953af1c34f3bc89b527c78fecb1cbce

  • SHA256

    b6a2a4a911c808f75204b6fbf55a0fc4c6408b0240d3f59e8e5933b186a1d68f

  • SHA512

    73ad90fc3017ff4424e8b805655ba31976e174dd815786ccc5230d359b5c33af0c025692a285f5150031a0d8d04df143e61a1f3783369738f82643784be43834

  • SSDEEP

    3072:LP99KZ26S+xPffpSRRRDLuTUXnPjAYmOEHEGjq4yW9WDecBGPfeZh1HHebx8kAP7:D9YZ26S+PW5EwNMY68h8CO3

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\ca9141d70ac492e6adb61f3c7e14ed59.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:4056
    • 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:1540
      • C:\Windows\system32\attrib.exe
        attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
        3⤵
        • Views/modifies file attributes
        PID:2336
    • 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:4332
    • 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:4232

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/4056-138-0x00007FF8E1100000-0x00007FF8E1110000-memory.dmp

    Filesize

    64KB

  • memory/4056-135-0x00007FF8E3A30000-0x00007FF8E3A40000-memory.dmp

    Filesize

    64KB

  • memory/4056-136-0x00007FF8E3A30000-0x00007FF8E3A40000-memory.dmp

    Filesize

    64KB

  • memory/4056-137-0x00007FF8E1100000-0x00007FF8E1110000-memory.dmp

    Filesize

    64KB

  • memory/4056-132-0x00007FF8E3A30000-0x00007FF8E3A40000-memory.dmp

    Filesize

    64KB

  • memory/4056-134-0x00007FF8E3A30000-0x00007FF8E3A40000-memory.dmp

    Filesize

    64KB

  • memory/4056-133-0x00007FF8E3A30000-0x00007FF8E3A40000-memory.dmp

    Filesize

    64KB

  • memory/4056-144-0x00007FF8E3A30000-0x00007FF8E3A40000-memory.dmp

    Filesize

    64KB

  • memory/4056-145-0x00007FF8E3A30000-0x00007FF8E3A40000-memory.dmp

    Filesize

    64KB

  • memory/4056-147-0x00007FF8E3A30000-0x00007FF8E3A40000-memory.dmp

    Filesize

    64KB

  • memory/4056-146-0x00007FF8E3A30000-0x00007FF8E3A40000-memory.dmp

    Filesize

    64KB