Analysis

  • max time kernel
    151s
  • max time network
    150s
  • platform
    windows7_x64
  • resource
    win7-en-20211208
  • submitted
    11/01/2022, 21:46

General

  • Target
    c263e0e75e78480f9aab45b33051e927.xls
  • Size 118KB
  • Sample220111-1mlrysheb8
  • SHA256 9ade9daf48cb63c929cd8e7ec03ac77ed41d362efaa79453d0eda4553747c404
  • MD5 SHA1 SHA512
Score
10/10

Malware Config

Extracted

Language
  • xlm4.0

Source
URLs
  • xlm40.dropper

    http://www.cuneytkocas.com/wp-content/VSnofpES1wO2CcVob/

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\c263e0e75e78480f9aab45b33051e927.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:1768
    • 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:744
      • 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:1692
        • C:\Windows\SysWOW64\rundll32.exe
          C:\Windows\SysWOW64\rundll32.exe "C:\Windows\SysWOW64\Bvzrgngux\bapkol.pjg",CGuyeXYDoVW
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:1896
          • C:\Windows\SysWOW64\rundll32.exe
            C:\Windows\SysWOW64\rundll32.exe "C:\Windows\SysWOW64\Bvzrgngux\bapkol.pjg",DllRegisterServer
            5⤵
            • Blocklisted process makes network request
            • Suspicious behavior: EnumeratesProcesses
            PID:1876

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        memory/744-63-0x00000000001E3000-0x00000000001E4000-memory.dmp

        memory/744-62-0x00000000001C1000-0x00000000001E3000-memory.dmp

        memory/744-59-0x00000000762C1000-0x00000000762C3000-memory.dmp

        memory/1692-69-0x00000000009E1000-0x0000000000A03000-memory.dmp

        memory/1692-73-0x0000000000CE1000-0x0000000000D03000-memory.dmp

        memory/1692-77-0x0000000002731000-0x0000000002753000-memory.dmp

        memory/1692-67-0x00000000002D1000-0x00000000002F3000-memory.dmp

        memory/1692-75-0x0000000000D41000-0x0000000000D63000-memory.dmp

        memory/1692-71-0x0000000000C81000-0x0000000000CA3000-memory.dmp

        memory/1768-55-0x000000002F6E1000-0x000000002F6E4000-memory.dmp

        memory/1768-57-0x000000005FFF0000-0x0000000060000000-memory.dmp

        memory/1768-56-0x0000000071421000-0x0000000071423000-memory.dmp

        memory/1876-85-0x0000000000271000-0x0000000000293000-memory.dmp

        memory/1876-87-0x00000000004C1000-0x00000000004E3000-memory.dmp

        memory/1876-89-0x0000000000BE1000-0x0000000000C03000-memory.dmp

        memory/1876-91-0x00000000024A1000-0x00000000024C3000-memory.dmp

        memory/1876-94-0x0000000002A91000-0x0000000002AB3000-memory.dmp

        memory/1896-81-0x0000000000741000-0x0000000000763000-memory.dmp