Analysis

  • max time kernel
    148s
  • max time network
    150s
  • platform
    windows7_x64
  • resource
    win7-en-20211208
  • submitted
    12/01/2022, 03:05

General

  • Target
    31ee91c0780d87161c509e3e4f87c1c1.xls
  • Size 113KB
  • Sample220112-dk69jsbaan
  • SHA256 fc8a0b0d90635b0da61d85b8958db1432cfd8e40fe967583f6ba012ae85f2c48
  • 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 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\31ee91c0780d87161c509e3e4f87c1c1.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:1576
    • 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:952
      • 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:1664
        • C:\Windows\SysWOW64\rundll32.exe
          C:\Windows\SysWOW64\rundll32.exe "C:\Windows\SysWOW64\Hdejhoszxafqewjz\ifysggvcnp.ryn",ZSDHLe
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:1724
          • C:\Windows\SysWOW64\rundll32.exe
            C:\Windows\SysWOW64\rundll32.exe "C:\Windows\SysWOW64\Hdejhoszxafqewjz\ifysggvcnp.ryn",DllRegisterServer
            5⤵
            • Blocklisted process makes network request
            • Suspicious behavior: EnumeratesProcesses
            PID:692

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        memory/692-92-0x0000000002BA1000-0x0000000002BC3000-memory.dmp

        memory/692-84-0x0000000000261000-0x0000000000283000-memory.dmp

        memory/692-86-0x00000000002D1000-0x00000000002F3000-memory.dmp

        memory/692-88-0x0000000000451000-0x0000000000473000-memory.dmp

        memory/692-90-0x00000000006E1000-0x0000000000703000-memory.dmp

        memory/952-61-0x0000000000191000-0x00000000001B3000-memory.dmp

        memory/952-62-0x00000000001B3000-0x00000000001B4000-memory.dmp

        memory/952-58-0x0000000076451000-0x0000000076453000-memory.dmp

        memory/1576-54-0x000000002FC91000-0x000000002FC94000-memory.dmp

        memory/1576-56-0x000000005FFF0000-0x0000000060000000-memory.dmp

        memory/1576-55-0x0000000071AA1000-0x0000000071AA3000-memory.dmp

        memory/1664-68-0x00000000003F1000-0x0000000000413000-memory.dmp

        memory/1664-76-0x0000000002711000-0x0000000002733000-memory.dmp

        memory/1664-74-0x0000000002601000-0x0000000002623000-memory.dmp

        memory/1664-72-0x0000000000CD1000-0x0000000000CF3000-memory.dmp

        memory/1664-70-0x0000000000C51000-0x0000000000C73000-memory.dmp

        memory/1664-66-0x0000000000221000-0x0000000000243000-memory.dmp

        memory/1724-80-0x00000000001C1000-0x00000000001E3000-memory.dmp