Analysis

  • max time kernel
    145s
  • max time network
    149s
  • platform
    windows10_x64
  • resource
    win10v20210408
  • submitted
    18/06/2021, 10:04

General

  • Target
    idea-1128721882.xlsm
  • Size 158KB
  • Sample210618-6myym5mmxe
  • SHA256 97c65fc5e4e6cb68141853ded39ca1e62b374430b80765b7f4a96244b44c58f5
  • MD5 SHA1 SHA512
Score
10/10

Malware Config

Extracted

Language
  • xlm4.0

Source
URLs
  • xlm40.dropper

    https://astronomia-esp.com/j5KMREjY4/gg.html

  • xlm40.dropper

    https://m-morsi.com/fDpJyn0aEyCB/gg.html

Signatures

  • Process spawned unexpected child process 2 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 14 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\idea-1128721882.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:640
    • C:\Windows\splwow64.exe
      C:\Windows\splwow64.exe 12288
      2⤵
        PID:3988
      • C:\Windows\SYSTEM32\regsvr32.exe
        regsvr32 ..\cexyz1.dll
        2⤵
        • Process spawned unexpected child process
        PID:572
      • C:\Windows\SYSTEM32\regsvr32.exe
        regsvr32 ..\cexyz2.dll
        2⤵
        • Process spawned unexpected child process
        PID:3324

    Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          memory/640-114-0x00007FF6F8100000-0x00007FF6FB6B6000-memory.dmp

          memory/640-115-0x00007FFD9F860000-0x00007FFD9F870000-memory.dmp

          memory/640-116-0x00007FFD9F860000-0x00007FFD9F870000-memory.dmp

          memory/640-117-0x00007FFD9F860000-0x00007FFD9F870000-memory.dmp

          memory/640-118-0x00007FFD9F860000-0x00007FFD9F870000-memory.dmp

          memory/640-121-0x00007FFD9F860000-0x00007FFD9F870000-memory.dmp

          memory/640-122-0x00007FFDBFF60000-0x00007FFDC104E000-memory.dmp

          memory/640-123-0x00000179C3DC0000-0x00000179C5CB5000-memory.dmp