Analysis

  • max time kernel
    148s
  • max time network
    143s
  • platform
    windows7_x64
  • resource
    win7v200722
  • submitted
    31/07/2020, 11:12

General

  • Target
    24c2540e588585a4daf8b3fe1112a78d.exe
  • Size 1.0MB
  • Sample200731-brd81v3v32
  • SHA256 08fe7e61eafc062a5f50981fae0f578442cdfd31a00e2398389c8bea37485f02
  • 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
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs
  • Suspicious use of SetThreadContext 1 IoCs
  • Modifies registry key 1 TTPs 3 IoCs
  • Suspicious use of WriteProcessMemory 511 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\24c2540e588585a4daf8b3fe1112a78d.exe
    "C:\Users\Admin\AppData\Local\Temp\24c2540e588585a4daf8b3fe1112a78d.exe"
    1⤵
    • Adds Run key to start application
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:112
    • C:\Windows\SysWOW64\Notepad.exe
      "C:\Windows\System32\Notepad.exe"
      2⤵
        PID:1932
        • C:\Windows\SysWOW64\cmd.exe
          cmd /c C:\Users\Public\Natso.bat
          3⤵
            PID:1880
            • C:\Windows\SysWOW64\reg.exe
              reg delete hkcu\Environment /v windir /f
              4⤵
              • Modifies registry key
              PID:980
            • 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:1516
            • C:\Windows\SysWOW64\schtasks.exe
              schtasks /Run /TN \Microsoft\Windows\DiskCleanup\SilentCleanup /I
              4⤵
                PID:1164
              • C:\Windows\SysWOW64\reg.exe
                reg delete hkcu\Environment /v windir /f
                4⤵
                • Modifies registry key
                PID:1820
            • C:\Windows\SysWOW64\cmd.exe
              cmd /c C:\Users\Public\Natso.bat
              3⤵
                PID:928
            • C:\Program Files (x86)\internet explorer\ieinstal.exe
              "C:\Program Files (x86)\internet explorer\ieinstal.exe"
              2⤵
                PID:684

            Network

                  MITRE ATT&CK Enterprise v6

                  Replay Monitor

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                  Downloads

                  memory/112-120-0x0000000050480000-0x000000005049A000-memory.dmp

                  memory/684-129-0x0000000000400000-0x0000000000417000-memory.dmp

                  memory/684-126-0x0000000000400000-0x0000000000417000-memory.dmp