Analysis

  • max time kernel
    117s
  • max time network
    119s
  • platform
    windows7_x64
  • resource
    win7-en-20211208
  • submitted
    11/02/2022, 22:07

General

  • Target
    agent2.xls
  • Size 36KB
  • Sample220211-11mamsdcf7
  • SHA256 b488e96e5403f73b44c169fa2dc9489444c01ac1e9400106be215b813609ab8a
  • MD5 SHA1 SHA512
Score
10/10

Malware Config

Extracted

Language
  • xlm4.0

Source
URLs
  • xlm40.dropper

    https://markens.online/wp-data.php

Signatures

  • Process spawned unexpected child process 1 IoCs

    This typically indicates the parent process was compromised via an exploit or macro.

  • Enumerates system info in registry 2 TTPs 1 IoCs
  • Modifies Internet Explorer settings 1 TTPs 31 IoCs
  • Modifies registry class 64 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious use of SetWindowsHookEx 6 IoCs
  • Suspicious use of WriteProcessMemory 7 IoCs

Processes

  • C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE
    "C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE" /dde C:\Users\Admin\AppData\Local\Temp\agent2.xls
    1⤵
    • Enumerates system info in registry
    • Modifies Internet Explorer settings
    • Modifies registry class
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1572
    • C:\Windows\SysWOW64\rundll32.exe
      "C:\Windows\system32\rundll32.exe" C:\Users\Public\Documents\D8t6.txt,DllRegisterServer
      2⤵
      • Process spawned unexpected child process
      PID:788

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        memory/788-59-0x0000000075AB1000-0x0000000075AB3000-memory.dmp

        memory/1572-55-0x000000002F5F1000-0x000000002F5F4000-memory.dmp

        memory/1572-56-0x0000000070DA1000-0x0000000070DA3000-memory.dmp

        memory/1572-57-0x000000005FFF0000-0x0000000060000000-memory.dmp

        memory/1572-58-0x0000000071D8D000-0x0000000071D98000-memory.dmp

        memory/1572-60-0x000000005FFF0000-0x0000000060000000-memory.dmp