Analysis

  • max time kernel
    136s
  • max time network
    132s
  • platform
    windows10_x64
  • resource
    win10v20201028
  • submitted
    29/03/2021, 15:51

General

  • Target
    Claim172979626403292021.xlsm
  • Size 173KB
  • Sample210329-e2szf1l8qj
  • SHA256 0509c2db06fdbae73497f92f5941c7c391f78fbec4b9dca79fbb57eab6df188e
  • MD5 SHA1 SHA512
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.

  • 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 FindShellTrayWindow 2 IoCs
  • Suspicious use of SetWindowsHookEx 12 IoCs
  • Suspicious use of WriteProcessMemory 6 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\Claim172979626403292021.xlsm"
    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:4012
    • C:\Windows\SYSTEM32\rundll32.exe
      rundll32 ..\Hodas.vyur,DllRegisterServer
      2⤵
      • Process spawned unexpected child process
      PID:3724
    • C:\Windows\SYSTEM32\rundll32.exe
      rundll32 ..\Hodas.vyur1,DllRegisterServer
      2⤵
      • Process spawned unexpected child process
      PID:2128
    • C:\Windows\SYSTEM32\rundll32.exe
      rundll32 ..\Hodas.vyur2,DllRegisterServer
      2⤵
      • Process spawned unexpected child process
      PID:2400

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        memory/4012-2-0x00007FFDE1900000-0x00007FFDE1910000-memory.dmp

        memory/4012-3-0x00007FFDE1900000-0x00007FFDE1910000-memory.dmp

        memory/4012-4-0x00007FFDE1900000-0x00007FFDE1910000-memory.dmp

        memory/4012-5-0x00007FFE08050000-0x00007FFE08687000-memory.dmp

        memory/4012-6-0x00007FFDE1900000-0x00007FFDE1910000-memory.dmp