Analysis

  • max time kernel
    150s
  • max time network
    153s
  • platform
    windows7_x64
  • resource
    win7-en-20211208
  • submitted
    11/01/2022, 15:08

General

  • Target
    SecuriteInfo.com.Heur.24407.21788.xls
  • Size 113KB
  • Sample220111-shwglagcdp
  • SHA256 14242004bc97b6ca2b2b40e09b270a056e3d87aa4b37251f79709b26eeec3a5c
  • MD5 SHA1 SHA512

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.

  • 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\SecuriteInfo.com.Heur.24407.21788.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:1804
      • 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:1040
        • C:\Windows\SysWOW64\rundll32.exe
          C:\Windows\SysWOW64\rundll32.exe "C:\Windows\SysWOW64\Wbmqvi\kswvzwkzubafp.npb",IGUJhnVpju
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:1620
          • C:\Windows\SysWOW64\rundll32.exe
            C:\Windows\SysWOW64\rundll32.exe "C:\Windows\SysWOW64\Wbmqvi\kswvzwkzubafp.npb",DllRegisterServer
            5⤵
            • Blocklisted process makes network request
            • Suspicious behavior: EnumeratesProcesses
            PID:1740

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        memory/1040-68-0x0000000000341000-0x0000000000363000-memory.dmp

        memory/1040-72-0x00000000005E1000-0x0000000000603000-memory.dmp

        memory/1040-76-0x0000000002551000-0x0000000002573000-memory.dmp

        memory/1040-74-0x0000000002021000-0x0000000002043000-memory.dmp

        memory/1040-70-0x0000000000521000-0x0000000000543000-memory.dmp

        memory/1040-66-0x00000000001A1000-0x00000000001C3000-memory.dmp

        memory/1592-54-0x000000002FA01000-0x000000002FA04000-memory.dmp

        memory/1592-55-0x0000000071401000-0x0000000071403000-memory.dmp

        memory/1592-56-0x000000005FFF0000-0x0000000060000000-memory.dmp

        memory/1620-79-0x0000000000211000-0x0000000000233000-memory.dmp

        memory/1740-83-0x00000000001D1000-0x00000000001F3000-memory.dmp

        memory/1740-89-0x0000000000941000-0x0000000000963000-memory.dmp

        memory/1740-87-0x0000000000531000-0x0000000000553000-memory.dmp

        memory/1740-85-0x0000000000271000-0x0000000000293000-memory.dmp

        memory/1804-62-0x0000000000313000-0x0000000000314000-memory.dmp

        memory/1804-58-0x0000000076151000-0x0000000076153000-memory.dmp

        memory/1804-61-0x00000000002F1000-0x0000000000313000-memory.dmp