Analysis

  • max time kernel
    149s
  • max time network
    148s
  • platform
    windows7_x64
  • resource
    win7-en-20211208
  • submitted
    11/01/2022, 12:13

General

  • Target
    emoagain.xls
  • Size 113KB
  • Sample220111-pdrfasfef6
  • SHA256 7443d5335a207cca176825bd774a412e72882c815206c7f59ace1feb111bb4e9
  • MD5 SHA1 SHA512
Score
10/10

Malware Config

Extracted

Language
  • xlm4.0

Source
URLs
  • xlm40.dropper

    http://gaidov.bg/wp-includes/Ug/

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\emoagain.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:1460
    • 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:1388
      • 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:1676
        • C:\Windows\SysWOW64\rundll32.exe
          C:\Windows\SysWOW64\rundll32.exe "C:\Windows\SysWOW64\Apxreypayihpum\bfwg.qvx",DIgFMMeID
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:1060
          • C:\Windows\SysWOW64\rundll32.exe
            C:\Windows\SysWOW64\rundll32.exe "C:\Windows\SysWOW64\Apxreypayihpum\bfwg.qvx",DllRegisterServer
            5⤵
            • Blocklisted process makes network request
            • Suspicious behavior: EnumeratesProcesses
            PID:1824

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        memory/1388-58-0x00000000769D1000-0x00000000769D3000-memory.dmp

        memory/1388-62-0x0000000010024000-0x0000000010025000-memory.dmp

        memory/1388-61-0x0000000010001000-0x0000000010024000-memory.dmp

        memory/1460-54-0x000000002F5F1000-0x000000002F5F4000-memory.dmp

        memory/1460-55-0x0000000071961000-0x0000000071963000-memory.dmp

        memory/1460-56-0x000000005FFF0000-0x0000000060000000-memory.dmp

        memory/1676-70-0x00000000006F1000-0x0000000000714000-memory.dmp

        memory/1676-68-0x00000000003B1000-0x00000000003D4000-memory.dmp

        memory/1676-72-0x0000000000B41000-0x0000000000B64000-memory.dmp

        memory/1676-74-0x0000000000BE1000-0x0000000000C04000-memory.dmp

        memory/1676-76-0x00000000025A1000-0x00000000025C4000-memory.dmp

        memory/1824-86-0x0000000000241000-0x0000000000264000-memory.dmp

        memory/1824-88-0x00000000003D1000-0x00000000003F4000-memory.dmp

        memory/1824-90-0x00000000005F1000-0x0000000000614000-memory.dmp

        memory/1824-92-0x0000000002341000-0x0000000002364000-memory.dmp

        memory/1824-94-0x0000000002441000-0x0000000002464000-memory.dmp

        memory/1824-96-0x00000000028F1000-0x0000000002914000-memory.dmp