Analysis

  • max time kernel
    151s
  • max time network
    143s
  • platform
    windows7_x64
  • resource
    win7v200430
  • submitted
    13/07/2020, 11:46

General

  • Target

    de211b9bc6b587b466a9fa4f73aed579.exe

  • Size

    1.1MB

  • MD5

    de211b9bc6b587b466a9fa4f73aed579

  • SHA1

    a9eedbe3813be8608656b532eee9c61ef58b4283

  • SHA256

    2f0ce341108a0d177092a8e18ca880b966f96a397f23c5135cfd9c6588b0c8c1

  • SHA512

    570aab11cad657fa6b5ad748b341b2bf2d2b9b1d9c6f45f956d4f66ea092252022f6b9cefad3fd790ab57f48451ac3389f0a1c1954d679f7a9cc491f2ed02d7e

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.

  • Executes dropped EXE 2 IoCs
  • 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
  • Script User-Agent 2 IoCs

    Uses user-agent string associated with script host/environment.

  • Suspicious use of WriteProcessMemory 527 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\de211b9bc6b587b466a9fa4f73aed579.exe
    "C:\Users\Admin\AppData\Local\Temp\de211b9bc6b587b466a9fa4f73aed579.exe"
    1⤵
    • Adds Run key to start application
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:240
    • C:\Windows\SysWOW64\TapiUnattend.exe
      "C:\Windows\System32\TapiUnattend.exe"
      2⤵
        PID:1536
        • C:\Windows\SysWOW64\cmd.exe
          cmd /c C:\Users\Public\Natso.bat
          3⤵
            PID:2504
            • C:\Windows\SysWOW64\reg.exe
              reg delete hkcu\Environment /v windir /f
              4⤵
              • Modifies registry key
              PID:2552
            • 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:2584
            • C:\Windows\SysWOW64\schtasks.exe
              schtasks /Run /TN \Microsoft\Windows\DiskCleanup\SilentCleanup /I
              4⤵
                PID:2596
              • C:\Windows\SysWOW64\reg.exe
                reg delete hkcu\Environment /v windir /f
                4⤵
                • Modifies registry key
                PID:2640
            • C:\Windows\SysWOW64\cmd.exe
              cmd /c C:\Users\Public\Runex.bat
              3⤵
                PID:2628
                • C:\Windows \System32\fodhelper.exe
                  "C:\Windows \System32\fodhelper.exe"
                  4⤵
                  • Executes dropped EXE
                  PID:2696
                • C:\Windows \System32\fodhelper.exe
                  "C:\Windows \System32\fodhelper.exe"
                  4⤵
                  • Executes dropped EXE
                  PID:2720
            • C:\Program Files (x86)\internet explorer\ieinstal.exe
              "C:\Program Files (x86)\internet explorer\ieinstal.exe"
              2⤵
                PID:2540

            Network

                  MITRE ATT&CK Enterprise v6

                  Replay Monitor

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                  Downloads

                  • memory/240-124-0x0000000050480000-0x00000000504C0000-memory.dmp

                    Filesize

                    256KB

                  • memory/2540-133-0x0000000000400000-0x0000000000417000-memory.dmp

                    Filesize

                    92KB

                  • memory/2540-129-0x0000000000400000-0x0000000000417000-memory.dmp

                    Filesize

                    92KB