Analysis

  • max time kernel
    154s
  • max time network
    161s
  • platform
    windows7_x64
  • resource
    win7-en-20211208
  • submitted
    11/01/2022, 22:17

General

  • Target
    def724e2d8b7be9f31a034df71ae2e84.xls
  • Size 113KB
  • Sample220111-17cpsahff3
  • SHA256 15808d5cf09ee4a60ed9e18d0b403cd762cbf7613246e2cdfa6fba88eb654dd8
  • MD5 SHA1 SHA512
Score
10/10

Malware Config

Extracted

Language
  • xlm4.0

Source
URLs
  • xlm40.dropper

    http://ordinateur.ogivart.us/editor/Qpo7OAOnbe/

Signatures

  • Emotet

    Emotet is a trojan that is primarily spread through spam emails.

  • Process spawned unexpected child process 1 IoCs

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

  • Blocklisted process makes network request 2 IoCs
  • Downloads MZ/PE file
  • Loads dropped DLL 2 IoCs
  • Drops file in System32 directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • 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 behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 28 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\def724e2d8b7be9f31a034df71ae2e84.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:1360
    • C:\Windows\SysWow64\rundll32.exe
      C:\Windows\SysWow64\rundll32.exe ..\sun.ocx,D"&"l"&"lR"&"egister"&"Serve"&"r
      2⤵
      • Process spawned unexpected child process
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:432
      • C:\Windows\SysWOW64\rundll32.exe
        C:\Windows\SysWOW64\rundll32.exe "C:\Users\Admin\sun.ocx",DllRegisterServer
        3⤵
        • Loads dropped DLL
        • Drops file in System32 directory
        • Suspicious use of WriteProcessMemory
        PID:1132
        • C:\Windows\SysWOW64\rundll32.exe
          C:\Windows\SysWOW64\rundll32.exe "C:\Windows\SysWOW64\Wqkbzjzk\mbnjeyf.zvi",KweLAihNrutClLO
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:1784
          • C:\Windows\SysWOW64\rundll32.exe
            C:\Windows\SysWOW64\rundll32.exe "C:\Windows\SysWOW64\Wqkbzjzk\mbnjeyf.zvi",DllRegisterServer
            5⤵
            • Blocklisted process makes network request
            • Suspicious behavior: EnumeratesProcesses
            PID:888

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        memory/432-63-0x00000000001E3000-0x00000000001E4000-memory.dmp

        memory/432-59-0x0000000074F11000-0x0000000074F13000-memory.dmp

        memory/432-62-0x00000000001C1000-0x00000000001E3000-memory.dmp

        memory/888-84-0x00000000002E1000-0x0000000000303000-memory.dmp

        memory/888-90-0x0000000000A31000-0x0000000000A53000-memory.dmp

        memory/888-88-0x0000000000441000-0x0000000000463000-memory.dmp

        memory/888-86-0x00000000003B1000-0x00000000003D3000-memory.dmp

        memory/1132-73-0x00000000004A1000-0x00000000004C3000-memory.dmp

        memory/1132-71-0x00000000003D1000-0x00000000003F3000-memory.dmp

        memory/1132-75-0x0000000000611000-0x0000000000633000-memory.dmp

        memory/1132-77-0x0000000002611000-0x0000000002633000-memory.dmp

        memory/1132-69-0x0000000000331000-0x0000000000353000-memory.dmp

        memory/1132-67-0x00000000002C1000-0x00000000002E3000-memory.dmp

        memory/1360-56-0x00000000710A1000-0x00000000710A3000-memory.dmp

        memory/1360-57-0x000000005FFF0000-0x0000000060000000-memory.dmp

        memory/1360-55-0x000000002F751000-0x000000002F754000-memory.dmp