Analysis

  • max time kernel
    147s
  • max time network
    134s
  • platform
    windows7_x64
  • resource
    win7-en-20211208
  • submitted
    11/01/2022, 10:24

General

  • Target
    9cbe0000fd995dc192312df7e8be1097.xls
  • Size 118KB
  • Sample220111-mfdk4sfca3
  • SHA256 0e98916f880d74b048dab77d3d3ec4e6874ce24e9b297dd68f63469d3ca86d42
  • MD5 SHA1 SHA512

Malware Config

Extracted

Language
  • xlm4.0

Source
URLs
  • xlm40.dropper

    https://wordpressdes.vanzolini-gte.org.br/fundacaotelefonica.org.br/gAbC4QpJYI/

Extracted

Family
  • emotet

Botnet
  • Epoch4

C2
  • 131.100.24.231:80

  • 209.59.138.75:7080

  • 103.8.26.102:8080

  • 178.79.147.66:8080

  • 51.38.71.0:443

  • 79.172.212.216:8080

  • 162.214.50.39:7080

  • 203.114.109.124:443

  • 45.142.114.231:8080

  • 212.237.5.209:443

  • 104.251.214.46:8080

  • 212.237.56.116:7080

  • 107.182.225.142:8080

  • 104.168.155.129:8080

  • 138.185.72.26:8080

  • 45.118.135.203:7080

  • 216.158.226.206:443

  • 103.75.201.2:443

  • 158.69.222.101:443

  • 178.63.25.185:443

eck1.plain
ecs1.plain

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.

  • 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 use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 21 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\9cbe0000fd995dc192312df7e8be1097.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:1560
    • 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:1648
      • 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:1724
        • C:\Windows\SysWOW64\rundll32.exe
          C:\Windows\SysWOW64\rundll32.exe "C:\Windows\SysWOW64\Jryedjomzi\tkzd.wun",qouZNZNvWU
          4⤵
            PID:1888

    Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          memory/1560-54-0x000000002FDD1000-0x000000002FDD4000-memory.dmp

          memory/1560-55-0x0000000071881000-0x0000000071883000-memory.dmp

          memory/1560-56-0x000000005FFF0000-0x0000000060000000-memory.dmp

          memory/1648-58-0x0000000076911000-0x0000000076913000-memory.dmp

          memory/1648-64-0x00000000001F0000-0x0000000000218000-memory.dmp

          memory/1724-67-0x0000000000180000-0x00000000001A8000-memory.dmp