Analysis

  • max time kernel
    101s
  • max time network
    115s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    29-02-2024 10:43

General

  • Target

    ae51f9c84aa952eb79dc4a1ae368aa3f.xls

  • Size

    125KB

  • MD5

    ae51f9c84aa952eb79dc4a1ae368aa3f

  • SHA1

    3e05f5c32bd710121bfeeac0835a99142694221d

  • SHA256

    54c8e83e3600d0c86b6a24b9fc2522ea1f1ced9e7296aef429846ac75dbfff9d

  • SHA512

    4cd0b64940cfba5c1814068a893291513b00cb7c41ef2f8b0877bdfab055aa62bcfc949badf0e8c415f37c509ec04689bda501f9e1922cac5f5801d02c0eece2

  • SSDEEP

    1536:YUUUURJYAKZ0B6cVOPg1KAsWVbrzQ7ITkR62GUM88ScJtXwCv4DM1Yv9tK:5ApVbrzQ7ITk98jhJtXwCv4uYvHK

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\ae51f9c84aa952eb79dc4a1ae368aa3f.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:1196
    • 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:4772
    • 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:3552
    • 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:1884
      • C:\Windows\system32\attrib.exe
        attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
        3⤵
        • Views/modifies file attributes
        PID:4928

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\ae51f9c84aa952eb79dc4a1ae368aa3f.xls

    Filesize

    148KB

    MD5

    5c92ef6c6c9758d538350edd6d88df71

    SHA1

    a661e8c884d3e149abc7af37824ff710d30ba58b

    SHA256

    e6cb64d376e9793c04ee10cb7c07923542ebdfed4d84c5578bf2aca0eb833e89

    SHA512

    f2ff3fd9677ec7a62a585bb2c5f7ef1836a94b279617deb4a97e0f53fce693e455960fcd8a1aaf4def2b2c17bff46bb9f8c7f3a54139d7a1739c6d3b4fa3ec33

  • memory/1196-4-0x00007FFBB81D0000-0x00007FFBB81E0000-memory.dmp

    Filesize

    64KB

  • memory/1196-5-0x00007FFBF8150000-0x00007FFBF8345000-memory.dmp

    Filesize

    2.0MB

  • memory/1196-6-0x00007FFBF8150000-0x00007FFBF8345000-memory.dmp

    Filesize

    2.0MB

  • memory/1196-3-0x00007FFBB81D0000-0x00007FFBB81E0000-memory.dmp

    Filesize

    64KB

  • memory/1196-2-0x00007FFBB81D0000-0x00007FFBB81E0000-memory.dmp

    Filesize

    64KB

  • memory/1196-8-0x00007FFBF8150000-0x00007FFBF8345000-memory.dmp

    Filesize

    2.0MB

  • memory/1196-7-0x00007FFBF8150000-0x00007FFBF8345000-memory.dmp

    Filesize

    2.0MB

  • memory/1196-10-0x00007FFBB5C10000-0x00007FFBB5C20000-memory.dmp

    Filesize

    64KB

  • memory/1196-9-0x00007FFBF8150000-0x00007FFBF8345000-memory.dmp

    Filesize

    2.0MB

  • memory/1196-12-0x00007FFBF8150000-0x00007FFBF8345000-memory.dmp

    Filesize

    2.0MB

  • memory/1196-11-0x00007FFBF8150000-0x00007FFBF8345000-memory.dmp

    Filesize

    2.0MB

  • memory/1196-1-0x00007FFBB81D0000-0x00007FFBB81E0000-memory.dmp

    Filesize

    64KB

  • memory/1196-13-0x00007FFBF8150000-0x00007FFBF8345000-memory.dmp

    Filesize

    2.0MB

  • memory/1196-0-0x00007FFBB81D0000-0x00007FFBB81E0000-memory.dmp

    Filesize

    64KB

  • memory/1196-15-0x00007FFBF8150000-0x00007FFBF8345000-memory.dmp

    Filesize

    2.0MB

  • memory/1196-16-0x00007FFBF8150000-0x00007FFBF8345000-memory.dmp

    Filesize

    2.0MB

  • memory/1196-18-0x00007FFBF8150000-0x00007FFBF8345000-memory.dmp

    Filesize

    2.0MB

  • memory/1196-19-0x00007FFBF8150000-0x00007FFBF8345000-memory.dmp

    Filesize

    2.0MB

  • memory/1196-21-0x00007FFBF8150000-0x00007FFBF8345000-memory.dmp

    Filesize

    2.0MB

  • memory/1196-22-0x00007FFBF8150000-0x00007FFBF8345000-memory.dmp

    Filesize

    2.0MB

  • memory/1196-23-0x00007FFBF8150000-0x00007FFBF8345000-memory.dmp

    Filesize

    2.0MB

  • memory/1196-20-0x00007FFBF8150000-0x00007FFBF8345000-memory.dmp

    Filesize

    2.0MB

  • memory/1196-17-0x00007FFBF8150000-0x00007FFBF8345000-memory.dmp

    Filesize

    2.0MB

  • memory/1196-14-0x00007FFBB5C10000-0x00007FFBB5C20000-memory.dmp

    Filesize

    64KB

  • memory/1196-44-0x0000024762B20000-0x0000024763AF0000-memory.dmp

    Filesize

    15.8MB

  • memory/1196-48-0x0000024762B20000-0x0000024763AF0000-memory.dmp

    Filesize

    15.8MB

  • memory/1196-52-0x0000024762B20000-0x0000024763AF0000-memory.dmp

    Filesize

    15.8MB

  • memory/1196-57-0x0000024762B20000-0x0000024763AF0000-memory.dmp

    Filesize

    15.8MB

  • memory/1196-60-0x0000024762B20000-0x0000024763AF0000-memory.dmp

    Filesize

    15.8MB

  • memory/1196-64-0x000002475FC50000-0x0000024760450000-memory.dmp

    Filesize

    8.0MB

  • memory/1196-66-0x000002475FC50000-0x0000024760450000-memory.dmp

    Filesize

    8.0MB

  • memory/1196-69-0x000002475FC50000-0x0000024760450000-memory.dmp

    Filesize

    8.0MB

  • memory/1196-71-0x000002475FC50000-0x0000024760450000-memory.dmp

    Filesize

    8.0MB

  • memory/1196-81-0x000002475FC50000-0x0000024760450000-memory.dmp

    Filesize

    8.0MB

  • memory/1196-84-0x000002475FC50000-0x0000024760450000-memory.dmp

    Filesize

    8.0MB

  • memory/1196-102-0x000002475FC50000-0x0000024760450000-memory.dmp

    Filesize

    8.0MB

  • memory/1196-113-0x00007FFBF8150000-0x00007FFBF8345000-memory.dmp

    Filesize

    2.0MB

  • memory/1196-114-0x0000024762B20000-0x0000024763AF0000-memory.dmp

    Filesize

    15.8MB

  • memory/1196-115-0x0000024762B20000-0x0000024763AF0000-memory.dmp

    Filesize

    15.8MB

  • memory/1196-116-0x0000024762B20000-0x0000024763AF0000-memory.dmp

    Filesize

    15.8MB

  • memory/1196-117-0x0000024762B20000-0x0000024763AF0000-memory.dmp

    Filesize

    15.8MB

  • memory/1196-118-0x000002475FC50000-0x0000024760450000-memory.dmp

    Filesize

    8.0MB

  • memory/1196-119-0x0000024762B20000-0x0000024763AF0000-memory.dmp

    Filesize

    15.8MB

  • memory/1196-120-0x000002475FC50000-0x0000024760450000-memory.dmp

    Filesize

    8.0MB

  • memory/1196-121-0x000002475FC50000-0x0000024760450000-memory.dmp

    Filesize

    8.0MB

  • memory/1196-122-0x000002475FC50000-0x0000024760450000-memory.dmp

    Filesize

    8.0MB

  • memory/1196-123-0x000002475FC50000-0x0000024760450000-memory.dmp

    Filesize

    8.0MB

  • memory/1196-140-0x00007FFBB81D0000-0x00007FFBB81E0000-memory.dmp

    Filesize

    64KB

  • memory/1196-142-0x00007FFBF8150000-0x00007FFBF8345000-memory.dmp

    Filesize

    2.0MB

  • memory/1196-141-0x00007FFBB81D0000-0x00007FFBB81E0000-memory.dmp

    Filesize

    64KB

  • memory/1196-139-0x00007FFBB81D0000-0x00007FFBB81E0000-memory.dmp

    Filesize

    64KB

  • memory/1196-138-0x00007FFBB81D0000-0x00007FFBB81E0000-memory.dmp

    Filesize

    64KB