Analysis

  • max time kernel
    149s
  • max time network
    146s
  • platform
    windows10_x64
  • resource
    win10-en-20211208
  • submitted
    11/01/2022, 17:22

General

  • Target
    da933906dd6b43244cfa5836f0b43e9b.xls
  • Size 113KB
  • Sample220111-vxkdzsgfhj
  • SHA256 e99c27037595f4931d753f7e372cbad60953e56c327d9ea2a2c3042db0f5f4e4
  • MD5 SHA1 SHA512

Malware Config

Extracted

Language
  • xlm4.0

Source
URLs
  • xlm40.dropper

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

  • xlm40.dropper

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

Extracted

Family
  • emotet

Botnet
  • Epoch4

C2
  • 131.100.24.231:80

  • 209.59.138.75:7080

  • 103.8.26.103:8080

  • 51.38.71.0:443

  • 212.237.17.99:8080

  • 79.172.212.216:8080

  • 207.38.84.195:8080

  • 104.168.155.129:8080

  • 178.79.147.66:8080

  • 46.55.222.11:443

  • 103.8.26.102:8080

  • 192.254.71.210:443

  • 45.176.232.124:443

  • 203.114.109.124:443

  • 51.68.175.8:8080

  • 58.227.42.236:80

  • 45.142.114.231:8080

  • 217.182.143.207:443

  • 178.63.25.185:443

  • 45.118.115.99:8080

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.

  • Checks processor information in registry 2 TTPs 3 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious use of SetWindowsHookEx 12 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
    "C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\da933906dd6b43244cfa5836f0b43e9b.xls"
    1⤵
    • Checks processor information in registry
    • Enumerates system info in registry
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2384
    • 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:2292
      • 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:3956
        • C:\Windows\SysWOW64\rundll32.exe
          C:\Windows\SysWOW64\rundll32.exe "C:\Windows\SysWOW64\Cpfiykibrtp\wcbpgmg.qnv",PddixBRvbhzVUCz
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:2636
          • C:\Windows\SysWOW64\rundll32.exe
            C:\Windows\SysWOW64\rundll32.exe "C:\Windows\System32\Cpfiykibrtp\wcbpgmg.qnv",DllRegisterServer
            5⤵
              PID:1444

    Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          memory/2292-282-0x0000000000FB0000-0x0000000000FD6000-memory.dmp

          memory/2384-116-0x00007FF98ABC0000-0x00007FF98ABD0000-memory.dmp

          memory/2384-121-0x0000018CE0620000-0x0000018CE0622000-memory.dmp

          memory/2384-122-0x0000018CE0620000-0x0000018CE0622000-memory.dmp

          memory/2384-115-0x00007FF98ABC0000-0x00007FF98ABD0000-memory.dmp

          memory/2384-119-0x00007FF98ABC0000-0x00007FF98ABD0000-memory.dmp

          memory/2384-118-0x00007FF98ABC0000-0x00007FF98ABD0000-memory.dmp

          memory/2384-120-0x0000018CE0620000-0x0000018CE0622000-memory.dmp

          memory/2384-117-0x00007FF98ABC0000-0x00007FF98ABD0000-memory.dmp

          memory/2636-286-0x0000000000C20000-0x0000000000CCE000-memory.dmp

          memory/3956-283-0x0000000000EC0000-0x0000000000F6E000-memory.dmp