Analysis

  • max time kernel
    101s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231222-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
  • submitted
    26-12-2023 06:49

General

  • Target

    5ab761679b1a058f846bb9e6758ae2e4.xls

  • Size

    134KB

  • MD5

    5ab761679b1a058f846bb9e6758ae2e4

  • SHA1

    9e3fd094b07d7acd475088584199b6435d9ada43

  • SHA256

    19aec9a3adc4f07ef1344a9e1acc76c7712dc9c6096b50a2f03fef0b32f1ae5d

  • SHA512

    06602873063d0cbd77f267513b936bfaf176d7c540a2f871c0629596216f770c45167e4e74a8e2316ad71954b308f230e95116fb3421fb4d4a1c87a8b0099361

  • SSDEEP

    1536:muuuuaPrYFE5JouDvyGLV7WVbrzQ7ITkk62lRgeOEg8JtXw2AM2M/McuS7JuM:WE56e1JWVbrzQ7ITkcwcJtXwC5ktM

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.

  • Suspicious Office macro 1 IoCs

    Office document equipped with 4.0 macros.

  • Deletes itself 1 IoCs
  • 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\5ab761679b1a058f846bb9e6758ae2e4.xls"
    1⤵
    • Deletes itself
    • Checks processor information in registry
    • Enumerates system info in registry
    • NTFS ADS
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1228
    • 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:1792
    • 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:3852
    • 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:1660
  • C:\Windows\system32\attrib.exe
    attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
    1⤵
    • Views/modifies file attributes
    PID:3840

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\5ab761679b1a058f846bb9e6758ae2e4.xls

    Filesize

    154KB

    MD5

    08ad36d94a35379e2f10dd1354b909e3

    SHA1

    04819f20cf5dd133a20876a43d0000891d95de0e

    SHA256

    9ae06b66d0ffc4fc37794735f783c3f4b6750705087153502a3c0566281ea0a9

    SHA512

    511c00ff4a446b500b179b71bd48c1124254fe4abd564bce32fd4951faf729559925a13afab174c4ff98b0b8a02f314eeb84e32334f3a94b0916afda26cbf305

  • memory/1228-44-0x0000022709180000-0x0000022709980000-memory.dmp

    Filesize

    8.0MB

  • memory/1228-8-0x00007FFCBF1B0000-0x00007FFCBF3A5000-memory.dmp

    Filesize

    2.0MB

  • memory/1228-3-0x00007FFC7F230000-0x00007FFC7F240000-memory.dmp

    Filesize

    64KB

  • memory/1228-46-0x0000022709180000-0x0000022709980000-memory.dmp

    Filesize

    8.0MB

  • memory/1228-5-0x00007FFC7F230000-0x00007FFC7F240000-memory.dmp

    Filesize

    64KB

  • memory/1228-48-0x000002270E730000-0x000002270F700000-memory.dmp

    Filesize

    15.8MB

  • memory/1228-6-0x00007FFC7F230000-0x00007FFC7F240000-memory.dmp

    Filesize

    64KB

  • memory/1228-47-0x000002270E730000-0x000002270F700000-memory.dmp

    Filesize

    15.8MB

  • memory/1228-9-0x00007FFCBF1B0000-0x00007FFCBF3A5000-memory.dmp

    Filesize

    2.0MB

  • memory/1228-10-0x00007FFC7CED0000-0x00007FFC7CEE0000-memory.dmp

    Filesize

    64KB

  • memory/1228-11-0x00007FFCBF1B0000-0x00007FFCBF3A5000-memory.dmp

    Filesize

    2.0MB

  • memory/1228-12-0x00007FFCBF1B0000-0x00007FFCBF3A5000-memory.dmp

    Filesize

    2.0MB

  • memory/1228-13-0x00007FFCBF1B0000-0x00007FFCBF3A5000-memory.dmp

    Filesize

    2.0MB

  • memory/1228-14-0x00007FFC7CED0000-0x00007FFC7CEE0000-memory.dmp

    Filesize

    64KB

  • memory/1228-21-0x0000022709180000-0x0000022709980000-memory.dmp

    Filesize

    8.0MB

  • memory/1228-32-0x0000022709180000-0x0000022709980000-memory.dmp

    Filesize

    8.0MB

  • memory/1228-35-0x0000022709180000-0x0000022709980000-memory.dmp

    Filesize

    8.0MB

  • memory/1228-38-0x0000022709180000-0x0000022709980000-memory.dmp

    Filesize

    8.0MB

  • memory/1228-41-0x0000022709180000-0x0000022709980000-memory.dmp

    Filesize

    8.0MB

  • memory/1228-0-0x00007FFC7F230000-0x00007FFC7F240000-memory.dmp

    Filesize

    64KB

  • memory/1228-4-0x00007FFCBF1B0000-0x00007FFCBF3A5000-memory.dmp

    Filesize

    2.0MB

  • memory/1228-2-0x00007FFCBF1B0000-0x00007FFCBF3A5000-memory.dmp

    Filesize

    2.0MB

  • memory/1228-7-0x00007FFCBF1B0000-0x00007FFCBF3A5000-memory.dmp

    Filesize

    2.0MB

  • memory/1228-49-0x00007FFCBF1B0000-0x00007FFCBF3A5000-memory.dmp

    Filesize

    2.0MB

  • memory/1228-64-0x00007FFCBF1B0000-0x00007FFCBF3A5000-memory.dmp

    Filesize

    2.0MB

  • memory/1228-67-0x000002270E730000-0x000002270F700000-memory.dmp

    Filesize

    15.8MB

  • memory/1228-1-0x00007FFC7F230000-0x00007FFC7F240000-memory.dmp

    Filesize

    64KB

  • memory/1228-110-0x0000022709180000-0x0000022709980000-memory.dmp

    Filesize

    8.0MB

  • memory/1228-111-0x0000022709180000-0x0000022709980000-memory.dmp

    Filesize

    8.0MB

  • memory/1228-112-0x0000022709180000-0x0000022709980000-memory.dmp

    Filesize

    8.0MB

  • memory/1228-114-0x0000022709180000-0x0000022709980000-memory.dmp

    Filesize

    8.0MB

  • memory/1228-113-0x0000022709180000-0x0000022709980000-memory.dmp

    Filesize

    8.0MB

  • memory/1228-115-0x0000022709180000-0x0000022709980000-memory.dmp

    Filesize

    8.0MB

  • memory/1228-116-0x000002270E730000-0x000002270F700000-memory.dmp

    Filesize

    15.8MB

  • memory/1228-117-0x000002270E730000-0x000002270F700000-memory.dmp

    Filesize

    15.8MB

  • memory/1228-120-0x000002270E730000-0x000002270F700000-memory.dmp

    Filesize

    15.8MB

  • memory/1228-133-0x00007FFC7F230000-0x00007FFC7F240000-memory.dmp

    Filesize

    64KB

  • memory/1228-134-0x00007FFC7F230000-0x00007FFC7F240000-memory.dmp

    Filesize

    64KB

  • memory/1228-135-0x00007FFC7F230000-0x00007FFC7F240000-memory.dmp

    Filesize

    64KB

  • memory/1228-136-0x00007FFC7F230000-0x00007FFC7F240000-memory.dmp

    Filesize

    64KB

  • memory/1228-137-0x00007FFCBF1B0000-0x00007FFCBF3A5000-memory.dmp

    Filesize

    2.0MB