Analysis

  • max time kernel
    148s
  • max time network
    151s
  • platform
    windows7_x64
  • resource
    win7-en-20211208
  • submitted
    13/01/2022, 23:48

General

  • Target
    SecuriteInfo.com.Trojan.Agent.FRJZ.29036.8617.xlsm
  • Size 83KB
  • Sample220113-3thd8addbk
  • SHA256 48f75fe3ade801f9f0595a0e404a181e7a039a96f312ef285cb9d647efd21d2a
  • MD5 SHA1 SHA512
Score
10/10

Malware Config

Extracted

Language
  • xlm4.0

Source
URLs
  • xlm40.dropper

    http://robotically.xyz/wp-content/XtKkx/

Signatures

  • 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 4 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.Trojan.Agent.FRJZ.29036.8617.xlsm
    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:1668
    • C:\Windows\SysWow64\rundll32.exe
      C:\Windows\SysWow64\rundll32.exe ..\wxeu.ocx,D"&"l"&"lR"&"egister"&"Serve"&"r
      2⤵
      • Process spawned unexpected child process
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:972
      • C:\Windows\SysWOW64\rundll32.exe
        C:\Windows\SysWOW64\rundll32.exe "C:\Users\Admin\wxeu.ocx",DllRegisterServer
        3⤵
        • Loads dropped DLL
        • Drops file in System32 directory
        • Suspicious use of WriteProcessMemory
        PID:1100
        • C:\Windows\SysWOW64\rundll32.exe
          C:\Windows\SysWOW64\rundll32.exe "C:\Windows\SysWOW64\Olrfufapdszpn\tmlusgdynkd.pbv",EcOdEg
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:288
          • C:\Windows\SysWOW64\rundll32.exe
            C:\Windows\SysWOW64\rundll32.exe "C:\Windows\SysWOW64\Olrfufapdszpn\tmlusgdynkd.pbv",DllRegisterServer
            5⤵
            • Blocklisted process makes network request
            • Suspicious behavior: EnumeratesProcesses
            PID:956

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        memory/288-80-0x0000000000201000-0x0000000000225000-memory.dmp

        memory/956-92-0x0000000000DB1000-0x0000000000DD5000-memory.dmp

        memory/956-90-0x0000000000C41000-0x0000000000C65000-memory.dmp

        memory/956-88-0x0000000000BA1000-0x0000000000BC5000-memory.dmp

        memory/956-86-0x00000000004A1000-0x00000000004C5000-memory.dmp

        memory/956-84-0x0000000000401000-0x0000000000425000-memory.dmp

        memory/972-62-0x0000000000745000-0x0000000000746000-memory.dmp

        memory/972-61-0x0000000000721000-0x0000000000745000-memory.dmp

        memory/972-58-0x0000000075AE1000-0x0000000075AE3000-memory.dmp

        memory/1100-76-0x00000000026A1000-0x00000000026C5000-memory.dmp

        memory/1100-74-0x00000000025A1000-0x00000000025C5000-memory.dmp

        memory/1100-72-0x00000000023C1000-0x00000000023E5000-memory.dmp

        memory/1100-70-0x0000000000921000-0x0000000000945000-memory.dmp

        memory/1100-68-0x0000000000831000-0x0000000000855000-memory.dmp

        memory/1100-66-0x00000000002B1000-0x00000000002D5000-memory.dmp

        memory/1668-54-0x000000002FD41000-0x000000002FD44000-memory.dmp

        memory/1668-55-0x0000000071411000-0x0000000071413000-memory.dmp

        memory/1668-56-0x000000005FFF0000-0x0000000060000000-memory.dmp