Analysis

  • max time kernel
    139s
  • max time network
    149s
  • platform
    windows10_x64
  • resource
    win10
  • submitted
    19/10/2020, 10:55

General

  • Target
    20NS10-A-R 20-9-7,pdf.exe
  • Size 942KB
  • Sample201019-vmzc73frrs
  • SHA256 ce02018924b4ddc6ffb9cae8a58f7816e3fa1152294e305befed2e6bd07eed78
  • MD5 SHA1 SHA512

Malware Config

Signatures

  • ModiLoader, DBatLoader

    ModiLoader is a Delphi loader that misuses cloud services to download other malicious families.

  • Remcos

    Remcos is a closed-source remote control and surveillance software.

  • ModiLoader First Stage 1 IoCs
  • ModiLoader Second Stage 1 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Modifies registry key 1 TTPs 3 IoCs
  • Modifies system certificate store 2 TTPs 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 510 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\20NS10-A-R 20-9-7,pdf.exe
    "C:\Users\Admin\AppData\Local\Temp\20NS10-A-R 20-9-7,pdf.exe"
    1⤵
    • Adds Run key to start application
    • Modifies system certificate store
    • Suspicious use of WriteProcessMemory
    PID:724
    • C:\Windows\SysWOW64\Notepad.exe
      "C:\Windows\System32\Notepad.exe"
      2⤵
        PID:1480
        • C:\Windows\SysWOW64\cmd.exe
          C:\Windows\system32\cmd.exe /c C:\Users\Public\Natso.bat
          3⤵
            PID:4228
            • C:\Windows\SysWOW64\reg.exe
              reg delete hkcu\Environment /v windir /f
              4⤵
              • Modifies registry key
              PID:4284
            • C:\Windows\SysWOW64\reg.exe
              reg add hkcu\Environment /v windir /d "cmd /c start /min C:\Users\Public\x.bat reg delete hkcu\Environment /v windir /f && REM "
              4⤵
              • Modifies registry key
              PID:4304
            • C:\Windows\SysWOW64\schtasks.exe
              schtasks /Run /TN \Microsoft\Windows\DiskCleanup\SilentCleanup /I
              4⤵
                PID:4324
              • C:\Windows\SysWOW64\reg.exe
                reg delete hkcu\Environment /v windir /f
                4⤵
                • Modifies registry key
                PID:4344
            • C:\Windows\SysWOW64\cmd.exe
              C:\Windows\system32\cmd.exe /c C:\Users\Public\Natso.bat
              3⤵
                PID:4452
            • C:\Program Files (x86)\internet explorer\ieinstal.exe
              "C:\Program Files (x86)\internet explorer\ieinstal.exe"
              2⤵
              • Suspicious use of SetWindowsHookEx
              PID:4360

          Network

                MITRE ATT&CK Enterprise v6

                Replay Monitor

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                Downloads

                memory/724-0-0x0000000002520000-0x0000000002530000-memory.dmp

                memory/724-1-0x00000000038F0000-0x0000000003946000-memory.dmp

                memory/724-242-0x0000000050480000-0x000000005049A000-memory.dmp

                memory/724-257-0x0000000010540000-0x0000000010565000-memory.dmp

                memory/1480-2-0x0000000002EA0000-0x0000000002EA1000-memory.dmp

                memory/1480-4-0x0000000002F60000-0x0000000002F61000-memory.dmp

                memory/1480-243-0x00000000068C0000-0x00000000068C1000-memory.dmp

                memory/4360-251-0x0000000002BB0000-0x0000000002BB1000-memory.dmp

                memory/4360-253-0x0000000002E70000-0x0000000002E71000-memory.dmp

                memory/4360-258-0x0000000002E10000-0x0000000002E11000-memory.dmp