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Analysis

  • max time kernel
    149s
  • 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

    26d2b3a92fda89574c74d396d85dec67.xls

  • Size

    117KB

  • MD5

    26d2b3a92fda89574c74d396d85dec67

  • SHA1

    5c239039f7f736427ff061f9c448664bafc1007e

  • SHA256

    eae8c6ea0030850478baf007d3253bc9dbf9c2d32770ba7849854fcb3c20a493

  • SHA512

    12450744f25ec19ababe14a279c26cbdb3ffffc4abed302d234c4fc7b8b6a9b503feca787af6d05db42c4451fed933a2c32609de4d0ecd34fdfefc73ec446ada

  • SSDEEP

    1536:T4HPa4Rz/Sbj13z/vHfQseqZyC23udv3OglgAb3NRKBqN/WwF1klo0UviBuEUIzC:pyC23yOglgAb3NRKEJhwzHKxyTk

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
  • 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\26d2b3a92fda89574c74d396d85dec67.xls"
    1⤵
    • Checks processor information in registry
    • Enumerates system info in registry
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:4796
    • 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:3744
      • C:\Windows\system32\attrib.exe
        attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
        3⤵
        • Views/modifies file attributes
        PID:1908
    • 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:3956
    • 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/4796-135-0x00007FFE78230000-0x00007FFE78240000-memory.dmp

    Filesize

    64KB

  • memory/4796-137-0x00007FFE75E50000-0x00007FFE75E60000-memory.dmp

    Filesize

    64KB

  • memory/4796-138-0x00007FFE75E50000-0x00007FFE75E60000-memory.dmp

    Filesize

    64KB

  • memory/4796-136-0x00007FFE78230000-0x00007FFE78240000-memory.dmp

    Filesize

    64KB

  • memory/4796-132-0x00007FFE78230000-0x00007FFE78240000-memory.dmp

    Filesize

    64KB

  • memory/4796-134-0x00007FFE78230000-0x00007FFE78240000-memory.dmp

    Filesize

    64KB

  • memory/4796-133-0x00007FFE78230000-0x00007FFE78240000-memory.dmp

    Filesize

    64KB

  • memory/4796-144-0x00007FFE78230000-0x00007FFE78240000-memory.dmp

    Filesize

    64KB

  • memory/4796-145-0x00007FFE78230000-0x00007FFE78240000-memory.dmp

    Filesize

    64KB

  • memory/4796-146-0x00007FFE78230000-0x00007FFE78240000-memory.dmp

    Filesize

    64KB

  • memory/4796-147-0x00007FFE78230000-0x00007FFE78240000-memory.dmp

    Filesize

    64KB