Analysis

  • max time kernel
    149s
  • max time network
    141s
  • platform
    windows7_x64
  • resource
    win7-en-20211208
  • submitted
    14/01/2022, 04:35

General

  • Target
    SecuriteInfo.com.Trojan.Agent.FRJZ.5659.28079.xlsm
  • Size 83KB
  • Sample220114-e7p48aeedm
  • SHA256 c9a3300d453b49ea41ff4ceb73f52d67bce3361c38544dd461c146a3ebcf995b
  • MD5 SHA1 SHA512
Score
10/10

Malware Config

Extracted

Language
  • xlm4.0

Source
URLs
  • xlm40.dropper

    http://shopnhap.com/highbinder/UedVfTHDf5Em40/

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.5659.28079.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:1600
    • 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:1368
      • 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:428
        • C:\Windows\SysWOW64\rundll32.exe
          C:\Windows\SysWOW64\rundll32.exe "C:\Windows\SysWOW64\Yyizt\kxkxtvvrmtgkg.mzq",cKIGC
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:1936
          • C:\Windows\SysWOW64\rundll32.exe
            C:\Windows\SysWOW64\rundll32.exe "C:\Windows\SysWOW64\Yyizt\kxkxtvvrmtgkg.mzq",DllRegisterServer
            5⤵
            • Blocklisted process makes network request
            • Suspicious behavior: EnumeratesProcesses
            PID:1952

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        memory/428-68-0x0000000000A91000-0x0000000000AB5000-memory.dmp

        memory/428-72-0x00000000025C1000-0x00000000025E5000-memory.dmp

        memory/428-74-0x0000000002681000-0x00000000026A5000-memory.dmp

        memory/428-70-0x00000000023B1000-0x00000000023D5000-memory.dmp

        memory/428-66-0x00000000008B1000-0x00000000008D5000-memory.dmp

        memory/1368-58-0x0000000075471000-0x0000000075473000-memory.dmp

        memory/1368-62-0x0000000000245000-0x0000000000246000-memory.dmp

        memory/1368-61-0x0000000000221000-0x0000000000245000-memory.dmp

        memory/1600-54-0x000000002F8B1000-0x000000002F8B4000-memory.dmp

        memory/1600-56-0x000000005FFF0000-0x0000000060000000-memory.dmp

        memory/1600-55-0x0000000070E01000-0x0000000070E03000-memory.dmp

        memory/1936-78-0x0000000000271000-0x0000000000295000-memory.dmp

        memory/1952-82-0x00000000001B1000-0x00000000001D5000-memory.dmp

        memory/1952-84-0x0000000000491000-0x00000000004B5000-memory.dmp

        memory/1952-86-0x0000000001E91000-0x0000000001EB5000-memory.dmp

        memory/1952-88-0x0000000001F11000-0x0000000001F35000-memory.dmp

        memory/1952-90-0x0000000002081000-0x00000000020A5000-memory.dmp