Analysis

  • max time kernel
    157s
  • max time network
    156s
  • platform
    windows7_x64
  • resource
    win7-en-20211208
  • submitted
    11/01/2022, 22:17

General

  • Target
    SecuriteInfo.com.Exploit.Siggen3.24636.1341.1611.xls
  • Size 113KB
  • Sample220111-17cpsahfe7
  • SHA256 24160ff88a8c4ee8d12c4cad09dbd7e744c2bf1bfd24b636cb436cb047d3324d
  • MD5 SHA1 SHA512
Score
10/10

Malware Config

Extracted

Language
  • xlm4.0

Source
URLs
  • xlm40.dropper

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

  • xlm40.dropper

    http://studiokrishnaproduction.com/wp-includes/3mJ/

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 5 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.Exploit.Siggen3.24636.1341.1611.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:1396
    • 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:1556
      • 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:1164
        • C:\Windows\SysWOW64\rundll32.exe
          C:\Windows\SysWOW64\rundll32.exe "C:\Windows\SysWOW64\Ezndypzwts\xvobst.nhl",kToXGZSXBJBhth
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:1624
          • C:\Windows\SysWOW64\rundll32.exe
            C:\Windows\SysWOW64\rundll32.exe "C:\Windows\SysWOW64\Ezndypzwts\xvobst.nhl",DllRegisterServer
            5⤵
            • Blocklisted process makes network request
            • Suspicious behavior: EnumeratesProcesses
            PID:2016

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        memory/1164-68-0x00000000009E1000-0x0000000000A03000-memory.dmp

        memory/1164-74-0x0000000002531000-0x0000000002553000-memory.dmp

        memory/1164-72-0x0000000002491000-0x00000000024B3000-memory.dmp

        memory/1164-70-0x0000000002371000-0x0000000002393000-memory.dmp

        memory/1164-66-0x0000000000201000-0x0000000000223000-memory.dmp

        memory/1396-56-0x000000005FFF0000-0x0000000060000000-memory.dmp

        memory/1396-55-0x0000000071871000-0x0000000071873000-memory.dmp

        memory/1396-54-0x000000002F601000-0x000000002F604000-memory.dmp

        memory/1556-61-0x00000000001A1000-0x00000000001C3000-memory.dmp

        memory/1556-62-0x00000000001C3000-0x00000000001C4000-memory.dmp

        memory/1556-58-0x0000000075D61000-0x0000000075D63000-memory.dmp

        memory/1624-78-0x0000000000211000-0x0000000000233000-memory.dmp

        memory/2016-82-0x00000000002C1000-0x00000000002E3000-memory.dmp

        memory/2016-84-0x0000000001F81000-0x0000000001FA3000-memory.dmp

        memory/2016-86-0x00000000022E1000-0x0000000002303000-memory.dmp

        memory/2016-88-0x0000000002341000-0x0000000002363000-memory.dmp