Analysis

  • max time kernel
    140s
  • max time network
    157s
  • platform
    windows7_x64
  • resource
    win7
  • submitted
    31/07/2020, 11:47

General

  • Target
    IMG_000002_DOCUMENTS_PDF.exe
  • Size 1.0MB
  • Sample200731-mgdkfgzfte
  • SHA256 37c2608ad09b3f6d0cd33476b8f6bf6fefd1a0f2408657072da80a0454da7e6f
  • 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.

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Modifies registry key 1 TTPs 3 IoCs
  • Modifies system certificate store 2 TTPs 3 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 511 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\IMG_000002_DOCUMENTS_PDF.exe
    "C:\Users\Admin\AppData\Local\Temp\IMG_000002_DOCUMENTS_PDF.exe"
    1⤵
    • Adds Run key to start application
    • Suspicious use of SetThreadContext
    • Modifies system certificate store
    • Suspicious use of WriteProcessMemory
    PID:1448
    • C:\Windows\SysWOW64\Notepad.exe
      "C:\Windows\System32\Notepad.exe"
      2⤵
        PID:1836
        • C:\Windows\SysWOW64\cmd.exe
          cmd /c C:\Users\Public\Natso.bat
          3⤵
            PID:2280
            • C:\Windows\SysWOW64\reg.exe
              reg delete hkcu\Environment /v windir /f
              4⤵
              • Modifies registry key
              PID:2316
            • 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:2336
            • C:\Windows\SysWOW64\schtasks.exe
              schtasks /Run /TN \Microsoft\Windows\DiskCleanup\SilentCleanup /I
              4⤵
                PID:2348
              • C:\Windows\SysWOW64\reg.exe
                reg delete hkcu\Environment /v windir /f
                4⤵
                • Modifies registry key
                PID:2408
            • C:\Windows\SysWOW64\cmd.exe
              cmd /c C:\Users\Public\Natso.bat
              3⤵
                PID:2428
            • C:\Program Files (x86)\internet explorer\ieinstal.exe
              "C:\Program Files (x86)\internet explorer\ieinstal.exe"
              2⤵
              • Suspicious use of SetWindowsHookEx
              PID:2328

          Network

                MITRE ATT&CK Enterprise v6

                Replay Monitor

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                Downloads

                memory/1448-120-0x0000000050480000-0x000000005049A000-memory.dmp

                memory/2328-126-0x0000000000530000-0x0000000000556000-memory.dmp

                memory/2328-129-0x0000000000530000-0x0000000000556000-memory.dmp