Analysis

  • max time kernel
    150s
  • max time network
    126s
  • platform
    windows7_x64
  • resource
    win7-en-20211208
  • submitted
    12/01/2022, 03:05

General

  • Target
    0e61523bcabaf4aaf0dc4e17b00058c2.xls
  • Size 118KB
  • Sample220112-dk69jsage8
  • SHA256 2c8664d029f07581d91dfdf94de270580b998fbf62b88287101aab42304156b4
  • MD5 SHA1 SHA512
Score
10/10

Malware Config

Extracted

Language
  • xlm4.0

Source
URLs
  • xlm40.dropper

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

  • xlm40.dropper

    http://towardsun.net/admin/BYGGkrYAnT/

  • xlm40.dropper

    http://k-antiques.jp/wp-includes/SCYdA6TLohYk2/

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 FindShellTrayWindow 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\0e61523bcabaf4aaf0dc4e17b00058c2.xls
    1⤵
    • Enumerates system info in registry
    • Modifies Internet Explorer settings
    • Modifies registry class
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1932
    • 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:960
      • 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:2016
        • C:\Windows\SysWOW64\rundll32.exe
          C:\Windows\SysWOW64\rundll32.exe "C:\Windows\SysWOW64\Xqhhvfyjq\yfkxwiu.rph",qixLvxqgwP
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:1904
          • C:\Windows\SysWOW64\rundll32.exe
            C:\Windows\SysWOW64\rundll32.exe "C:\Windows\SysWOW64\Xqhhvfyjq\yfkxwiu.rph",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/888-88-0x0000000000B81000-0x0000000000BA3000-memory.dmp

        memory/888-90-0x0000000002191000-0x00000000021B3000-memory.dmp

        memory/888-92-0x0000000002681000-0x00000000026A3000-memory.dmp

        memory/888-86-0x00000000003C1000-0x00000000003E3000-memory.dmp

        memory/888-84-0x0000000000361000-0x0000000000383000-memory.dmp

        memory/960-59-0x0000000076511000-0x0000000076513000-memory.dmp

        memory/960-63-0x00000000002C3000-0x00000000002C4000-memory.dmp

        memory/960-62-0x00000000002A1000-0x00000000002C3000-memory.dmp

        memory/1904-80-0x0000000000211000-0x0000000000233000-memory.dmp

        memory/1932-55-0x000000002F841000-0x000000002F844000-memory.dmp

        memory/1932-57-0x000000005FFF0000-0x0000000060000000-memory.dmp

        memory/1932-56-0x00000000719F1000-0x00000000719F3000-memory.dmp

        memory/2016-73-0x0000000002461000-0x0000000002483000-memory.dmp

        memory/2016-75-0x0000000002501000-0x0000000002523000-memory.dmp

        memory/2016-77-0x00000000026C1000-0x00000000026E3000-memory.dmp

        memory/2016-71-0x0000000002401000-0x0000000002423000-memory.dmp

        memory/2016-69-0x0000000000B91000-0x0000000000BB3000-memory.dmp

        memory/2016-67-0x0000000000751000-0x0000000000773000-memory.dmp