Fast2001.ocx _verified_ May 2026

The file fast2001.ocx is a legacy ActiveX control component that belongs to the FAST.lib 2000 for Windows library, also known as FASTWin. Developed by FAST.Software around 1999, it serves as an engine module or OLE control extension used to add specific functionalities to Windows-based applications. Technical Specifications Developer: FAST.Software. Associated Software: FAST.lib 2000 for Windows / FASTWin. File Type: Win32 OCX (ActiveX Control). Common Version: 1.04.0035. Typical Size: Approximately 576 KB. Default Path: C:\Windows\System32\fast2001.ocx. Use and Functionality

Providing a Proper Feature

If you're looking to implement a specific feature using fast2001.ocx, could you provide more details about: fast2001.ocx

Q: Can I delete fast2001.ocx if I no longer use the related software?
Yes. However, first uninstall the parent software via Control Panel. Deleting just the OCX may leave orphaned registry entries. Run a registry cleaner afterward if desired. The file fast2001

  • Remove persistence:
    1. Register OCX (regsvr32) and capture Registry and file system changes.
    2. Instantiate via a simple HTML/JS and through a native test harness calling obvious methods from type library. Log all actions.
    3. Monitor processes, spawned child processes, thread injection, code injection into other processes, and loaded modules (Process Explorer & Procmon).
    4. Capture network traffic (DNS, HTTP, HTTPS attempts, raw sockets). Note domains, IPs, SNI, user-agent strings, POST payloads.
    5. Trace file system writes (temp directories, %APPDATA%, ProgramData), new services, scheduled tasks, or driver installations.
    6. Use API Monitor to capture calls to CryptoAPI, network APIs, CreateProcess/StartService, and persistence-related registry APIs.
    7. If behavior is conditional (checks for sandbox, language, VM), run with API hooks that fake environment variables or use stealthy analysis techniques (e.g., slow execution, player process names).
    8. Take a post-run regshot and compare to pre-run to identify registry changes.