Analysis

  • max time kernel
    139s
  • max time network
    128s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    17/05/2024, 17:47

General

  • Target
    50b64ba34366fad2adb945ed87c4911d_JaffaCakes118.xls
  • Size 279KB
  • Sample240517-wc8frabb67
  • SHA256 5267210ae28394fdb5718e7304bb5840057d7d09b80a901964953078f46cd776
  • MD5 SHA1 SHA512 SSDEEP
Score
7/10

Malware Config

Signatures

  • Loads dropped DLL 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 FindShellTrayWindow 1 IoCs
  • Suspicious use of SetWindowsHookEx 18 IoCs
  • Suspicious use of WriteProcessMemory 2 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

  • Uses Volume Shadow Copy WMI provider

    The Volume Shadow Copy service is used to manage backups/snapshots.

  • Uses Volume Shadow Copy service COM API

    The Volume Shadow Copy service is used to manage backups/snapshots.

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\50b64ba34366fad2adb945ed87c4911d_JaffaCakes118.xls"
    1⤵
    • Loads dropped DLL
    • Checks processor information in registry
    • Enumerates system info in registry
    • NTFS ADS
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2984
    • C:\Windows\splwow64.exe
      C:\Windows\splwow64.exe 12288
      2⤵
        PID:2196

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          factory.xlsx

          • Path C:\Users\Admin\AppData\Local\Temp\factory.xlsx
          • Size 184KB
          • SHA256 12d075a57c9a9f0893129aff4811af59726d0ae1265d9721556e73a77fde79e3
          • MD5 SHA1 SHA512 SSDEEP

          masterbox2.dll

          • Path C:\Users\Admin\AppData\Roaming\masterbox2.dll
          • Size 64KB
          • SHA256 257bee57c5cac49ce0b5f9b160a3aaafde703ecc036cf4cf32975fc08c7f445e
          • MD5 SHA1 SHA512 SSDEEP

          memory/2984-14-0x00007FF9B03F0000-0x00007FF9B05E5000-memory.dmp

          memory/2984-181-0x00000000733F0000-0x000000007340E000-memory.dmp

          memory/2984-5-0x00007FF9B03F0000-0x00007FF9B05E5000-memory.dmp

          memory/2984-6-0x00007FF970470000-0x00007FF970480000-memory.dmp

          memory/2984-4-0x00007FF9B048D000-0x00007FF9B048E000-memory.dmp

          memory/2984-8-0x00007FF9B03F0000-0x00007FF9B05E5000-memory.dmp

          memory/2984-11-0x00007FF9B03F0000-0x00007FF9B05E5000-memory.dmp

          memory/2984-12-0x00007FF96E3B0000-0x00007FF96E3C0000-memory.dmp

          memory/2984-10-0x00007FF9B03F0000-0x00007FF9B05E5000-memory.dmp

          memory/2984-13-0x00007FF9B03F0000-0x00007FF9B05E5000-memory.dmp

          memory/2984-16-0x00007FF9B03F0000-0x00007FF9B05E5000-memory.dmp

          memory/2984-17-0x00007FF96E3B0000-0x00007FF96E3C0000-memory.dmp

          memory/2984-1-0x00007FF970470000-0x00007FF970480000-memory.dmp

          memory/2984-0-0x00007FF970470000-0x00007FF970480000-memory.dmp

          memory/2984-15-0x00007FF9B03F0000-0x00007FF9B05E5000-memory.dmp

          memory/2984-7-0x00007FF9B03F0000-0x00007FF9B05E5000-memory.dmp

          memory/2984-30-0x00007FF9B03F0000-0x00007FF9B05E5000-memory.dmp

          memory/2984-34-0x00007FF9B03F0000-0x00007FF9B05E5000-memory.dmp

          memory/2984-46-0x00007FF9B03F0000-0x00007FF9B05E5000-memory.dmp

          memory/2984-47-0x00007FF9B03F0000-0x00007FF9B05E5000-memory.dmp

          memory/2984-66-0x00007FF9B03F0000-0x00007FF9B05E5000-memory.dmp

          memory/2984-67-0x00007FF9B03F0000-0x00007FF9B05E5000-memory.dmp

          memory/2984-2-0x00007FF970470000-0x00007FF970480000-memory.dmp

          memory/2984-3-0x00007FF970470000-0x00007FF970480000-memory.dmp

          memory/2984-9-0x00007FF9B03F0000-0x00007FF9B05E5000-memory.dmp

          memory/2984-183-0x00007FF9B03F0000-0x00007FF9B05E5000-memory.dmp

          memory/2984-182-0x00000000733F0000-0x000000007340E000-memory.dmp