Analysis

  • max time kernel
    138s
  • max time network
    137s
  • platform
    windows10_x64
  • resource
    win10v20201028
  • submitted
    26/02/2021, 21:13

General

  • Target
    7.xlsb
  • Size 81KB
  • Sample210226-ldtkfcxymj
  • SHA256 977e9ab4d104d4084a4b13ca30086b332849c7e2cec0cf1d375dc5a3565a931d
  • 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
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious use of SetWindowsHookEx 12 IoCs
  • Suspicious use of WriteProcessMemory 2 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\7.xlsb"
    1⤵
    • Checks processor information in registry
    • Enumerates system info in registry
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:3976
    • C:\Windows\System32\rundll32.exe
      "C:\Windows\System32\rundll32.exe" C:\ProgramData\qoqw\1540.dll,DllRegisterServer
      2⤵
      • Process spawned unexpected child process
      PID:2340

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        memory/3976-2-0x00007FF8C5770000-0x00007FF8C5780000-memory.dmp

        memory/3976-3-0x00007FF8C5770000-0x00007FF8C5780000-memory.dmp

        memory/3976-4-0x00007FF8C5770000-0x00007FF8C5780000-memory.dmp

        memory/3976-5-0x00007FF8C5770000-0x00007FF8C5780000-memory.dmp

        memory/3976-6-0x00007FF8E8DC0000-0x00007FF8E93F7000-memory.dmp