Analysis

  • max time kernel
    150s
  • max time network
    147s
  • platform
    windows7_x64
  • resource
    win7-en-20211208
  • submitted
    12/01/2022, 00:47

General

  • Target
    3d43cf52327d8804c8d141c406fa26ea.xls
  • Size 113KB
  • Sample220112-a474eaaefq
  • SHA256 fb59d08c1c00da6e08768d759d984922ef2726cade6ed27fe5713a79e7b7022e
  • MD5 SHA1 SHA512

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.

  • suricata: ET MALWARE W32/Emotet CnC Beacon 3

    suricata: ET MALWARE W32/Emotet CnC Beacon 3

  • 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 5 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\3d43cf52327d8804c8d141c406fa26ea.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:1908
    • 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:764
      • 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:1960
        • C:\Windows\SysWOW64\rundll32.exe
          C:\Windows\SysWOW64\rundll32.exe "C:\Windows\SysWOW64\Nvcsiaefnn\uesywydurn.bsd",RTlFLisl
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:1756
          • C:\Windows\SysWOW64\rundll32.exe
            C:\Windows\SysWOW64\rundll32.exe "C:\Windows\SysWOW64\Nvcsiaefnn\uesywydurn.bsd",DllRegisterServer
            5⤵
            • Blocklisted process makes network request
            • Suspicious behavior: EnumeratesProcesses
            PID:1736

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        memory/764-62-0x00000000001D3000-0x00000000001D4000-memory.dmp

        memory/764-61-0x00000000001B1000-0x00000000001D3000-memory.dmp

        memory/764-58-0x0000000074F01000-0x0000000074F03000-memory.dmp

        memory/1736-82-0x00000000001D1000-0x00000000001F3000-memory.dmp

        memory/1736-90-0x0000000002B01000-0x0000000002B23000-memory.dmp

        memory/1736-88-0x00000000023B1000-0x00000000023D3000-memory.dmp

        memory/1736-86-0x0000000001F11000-0x0000000001F33000-memory.dmp

        memory/1736-84-0x00000000005E1000-0x0000000000603000-memory.dmp

        memory/1756-78-0x0000000000271000-0x0000000000293000-memory.dmp

        memory/1908-56-0x000000005FFF0000-0x0000000060000000-memory.dmp

        memory/1908-54-0x000000002F111000-0x000000002F114000-memory.dmp

        memory/1908-55-0x0000000070FD1000-0x0000000070FD3000-memory.dmp

        memory/1960-72-0x0000000002521000-0x0000000002543000-memory.dmp

        memory/1960-74-0x0000000002671000-0x0000000002693000-memory.dmp

        memory/1960-70-0x0000000001FA1000-0x0000000001FC3000-memory.dmp

        memory/1960-68-0x0000000000331000-0x0000000000353000-memory.dmp

        memory/1960-66-0x0000000000221000-0x0000000000243000-memory.dmp