Analysis

  • max time kernel
    133s
  • max time network
    147s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    26-12-2023 09:53

General

  • Target

    6533ebb305b8ec6171acbfdf1cb9d8c1.xls

  • Size

    37KB

  • MD5

    6533ebb305b8ec6171acbfdf1cb9d8c1

  • SHA1

    5c7ef00abccf8eb6ee04fbcef501001d1e3de8bc

  • SHA256

    da8caea69dceb74167452937c467602abe04419bfabd539914d3809e637965fc

  • SHA512

    fbb46b6ebdc674b6bd3a657a87d440914d8a2dc0ac75ba177245943dc5bb335e80acdc08a53d874aa441f9cb4bb2e67b20d59ca92a5179c572635549bdda1bd1

  • SSDEEP

    768:QPqNk3hbdlylKsgqopeJBWhZFGkE+cL2NdAJ9AC12PeaTnsBbXtGS:8ok3hbdlylKsgqopeJBWhZFGkE+cL2N8

Score
10/10

Malware Config

Signatures

  • Process spawned unexpected child process 1 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
  • Modifies registry class 1 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SetWindowsHookEx 6 IoCs
  • Suspicious use of WriteProcessMemory 4 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\6533ebb305b8ec6171acbfdf1cb9d8c1.xls"
    1⤵
    • Checks processor information in registry
    • Enumerates system info in registry
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:4376
    • C:\Windows\explorer.exe
      explorer.exe C:\Users\Public\Documents\ief.vbs
      2⤵
      • Process spawned unexpected child process
      PID:4560
  • C:\Windows\explorer.exe
    C:\Windows\explorer.exe /factory,{75dff2b7-6936-4c06-a8bb-676a7b00b24b} -Embedding
    1⤵
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:1480
    • C:\Windows\System32\WScript.exe
      "C:\Windows\System32\WScript.exe" "C:\Users\Public\Documents\ief.vbs"
      2⤵
        PID:4648

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/4376-3-0x00007FF8E7150000-0x00007FF8E7160000-memory.dmp

      Filesize

      64KB

    • memory/4376-5-0x00007FF9270D0000-0x00007FF9272C5000-memory.dmp

      Filesize

      2.0MB

    • memory/4376-8-0x00007FF9270D0000-0x00007FF9272C5000-memory.dmp

      Filesize

      2.0MB

    • memory/4376-13-0x00007FF9270D0000-0x00007FF9272C5000-memory.dmp

      Filesize

      2.0MB

    • memory/4376-14-0x00007FF9270D0000-0x00007FF9272C5000-memory.dmp

      Filesize

      2.0MB

    • memory/4376-12-0x00007FF9270D0000-0x00007FF9272C5000-memory.dmp

      Filesize

      2.0MB

    • memory/4376-18-0x00007FF9270D0000-0x00007FF9272C5000-memory.dmp

      Filesize

      2.0MB

    • memory/4376-19-0x00007FF9270D0000-0x00007FF9272C5000-memory.dmp

      Filesize

      2.0MB

    • memory/4376-21-0x00007FF9270D0000-0x00007FF9272C5000-memory.dmp

      Filesize

      2.0MB

    • memory/4376-23-0x00007FF9270D0000-0x00007FF9272C5000-memory.dmp

      Filesize

      2.0MB

    • memory/4376-22-0x00007FF9270D0000-0x00007FF9272C5000-memory.dmp

      Filesize

      2.0MB

    • memory/4376-20-0x00007FF9270D0000-0x00007FF9272C5000-memory.dmp

      Filesize

      2.0MB

    • memory/4376-16-0x00007FF8E4F50000-0x00007FF8E4F60000-memory.dmp

      Filesize

      64KB

    • memory/4376-17-0x00007FF9270D0000-0x00007FF9272C5000-memory.dmp

      Filesize

      2.0MB

    • memory/4376-15-0x00007FF9270D0000-0x00007FF9272C5000-memory.dmp

      Filesize

      2.0MB

    • memory/4376-11-0x00007FF9270D0000-0x00007FF9272C5000-memory.dmp

      Filesize

      2.0MB

    • memory/4376-10-0x00007FF9270D0000-0x00007FF9272C5000-memory.dmp

      Filesize

      2.0MB

    • memory/4376-9-0x00007FF8E4F50000-0x00007FF8E4F60000-memory.dmp

      Filesize

      64KB

    • memory/4376-7-0x00007FF9270D0000-0x00007FF9272C5000-memory.dmp

      Filesize

      2.0MB

    • memory/4376-6-0x00007FF9270D0000-0x00007FF9272C5000-memory.dmp

      Filesize

      2.0MB

    • memory/4376-4-0x00007FF8E7150000-0x00007FF8E7160000-memory.dmp

      Filesize

      64KB

    • memory/4376-2-0x00007FF8E7150000-0x00007FF8E7160000-memory.dmp

      Filesize

      64KB

    • memory/4376-1-0x00007FF8E7150000-0x00007FF8E7160000-memory.dmp

      Filesize

      64KB

    • memory/4376-0-0x00007FF8E7150000-0x00007FF8E7160000-memory.dmp

      Filesize

      64KB

    • memory/4376-35-0x00007FF9270D0000-0x00007FF9272C5000-memory.dmp

      Filesize

      2.0MB