Analysis

  • max time kernel
    149s
  • max time network
    151s
  • platform
    windows7_x64
  • resource
    win7-en-20211208
  • submitted
    11/01/2022, 23:44

General

  • Target
    58b606599b6d93a481f9e5185b1c8a69.xls
  • Size 113KB
  • Sample220111-3q514saag4
  • SHA256 b5207887a27a42330a6b8e863e0550008a6375de1f4c9c6c0edcc7a9bb6d548f
  • 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 3 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\58b606599b6d93a481f9e5185b1c8a69.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:1592
    • 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:1792
      • 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:288
        • C:\Windows\SysWOW64\rundll32.exe
          C:\Windows\SysWOW64\rundll32.exe "C:\Windows\SysWOW64\Fburawpb\vtnhdfzux.tod",cpPtLuSLzYmUKoS
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:740
          • C:\Windows\SysWOW64\rundll32.exe
            C:\Windows\SysWOW64\rundll32.exe "C:\Windows\SysWOW64\Fburawpb\vtnhdfzux.tod",DllRegisterServer
            5⤵
            • Blocklisted process makes network request
            • Suspicious behavior: EnumeratesProcesses
            PID:1872

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        memory/288-67-0x0000000000AA1000-0x0000000000AC3000-memory.dmp

        memory/288-71-0x00000000025A1000-0x00000000025C3000-memory.dmp

        memory/288-73-0x0000000002601000-0x0000000002623000-memory.dmp

        memory/288-65-0x0000000000781000-0x00000000007A3000-memory.dmp

        memory/288-69-0x0000000001FA1000-0x0000000001FC3000-memory.dmp

        memory/740-77-0x0000000000221000-0x0000000000243000-memory.dmp

        memory/1592-55-0x000000005FFF0000-0x0000000060000000-memory.dmp

        memory/1592-54-0x0000000071B51000-0x0000000071B53000-memory.dmp

        memory/1592-53-0x000000002FD21000-0x000000002FD24000-memory.dmp

        memory/1792-60-0x00000000006E1000-0x0000000000703000-memory.dmp

        memory/1792-57-0x0000000075D51000-0x0000000075D53000-memory.dmp

        memory/1792-61-0x0000000000703000-0x0000000000704000-memory.dmp

        memory/1872-81-0x0000000000331000-0x0000000000353000-memory.dmp

        memory/1872-83-0x0000000000AB1000-0x0000000000AD3000-memory.dmp

        memory/1872-85-0x0000000002301000-0x0000000002323000-memory.dmp

        memory/1872-87-0x0000000002471000-0x0000000002493000-memory.dmp

        memory/1872-89-0x0000000002CB1000-0x0000000002CD3000-memory.dmp