Analysis

  • max time kernel
    151s
  • max time network
    128s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    23/04/2022, 17:20

General

  • Target
    new.xls
  • Size 36KB
  • Sample220423-vwegcadeb7
  • SHA256 d553238215e2eee33893735019dfe83d658ba5885150aeb5ec5d3739012c645d
  • MD5 SHA1 SHA512
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 SetWindowsHookEx 14 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\new.xls"
    1⤵
    • Checks processor information in registry
    • Enumerates system info in registry
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:4536
    • C:\Windows\explorer.exe
      explorer.exe C:\Users\Public\Documents\Og4Uc.vbs
      2⤵
      • Process spawned unexpected child process
      PID:648
  • C:\Windows\explorer.exe
    C:\Windows\explorer.exe /factory,{75dff2b7-6936-4c06-a8bb-676a7b00b24b} -Embedding
    1⤵
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:4292
    • C:\Windows\System32\WScript.exe
      "C:\Windows\System32\WScript.exe" "C:\Users\Public\Documents\Og4Uc.vbs"
      2⤵
        PID:3624

    Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

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          Downloads

          Og4Uc.vbs

          • Path C:\Users\Public\Documents\Og4Uc.vbs
          • Size 542B
          • SHA256 a736df6c5dad9dd9409399b29c348ce6fde0cd80ab6807284375b5c10aec6090
          • MD5 SHA1 SHA512

          memory/4536-130-0x00007FF843BD0000-0x00007FF843BE0000-memory.dmp

          memory/4536-131-0x00007FF843BD0000-0x00007FF843BE0000-memory.dmp

          memory/4536-132-0x00007FF843BD0000-0x00007FF843BE0000-memory.dmp

          memory/4536-133-0x00007FF843BD0000-0x00007FF843BE0000-memory.dmp

          memory/4536-134-0x00007FF843BD0000-0x00007FF843BE0000-memory.dmp

          memory/4536-135-0x00007FF8419E0000-0x00007FF8419F0000-memory.dmp

          memory/4536-136-0x00007FF8419E0000-0x00007FF8419F0000-memory.dmp