Windows trace dll load

Close Menu Home. Thankfully, there are some good utilities out there for debugging this kind of thing: Dependency Walker is an old SDK tool that is still invaluable. Dependency Walker The SysInternals Process Monitor is an incredibly useful low-level Swiss Army Knife utility that can be used, among other things, to monitor dynamic library loading activity as it occurs, using the file activity view. Process Explorer. Microsoft publishes a tool that is named Process Monitor.

This tool enables developers and administrators to closely track the behavior of a running process. Process Monitor can be used to dynamically detect whether one of your applications may be vulnerable to this kind of issue.

Try to start your application by using CWD set to a specific directory. For example, double-click a file that has an extension whose file handler is assigned to your application.

Set up Process Monitor with the following filters:. If a vulnerable path is being hit, you will see something that is similar to the following: The call to the remote file share to load a DLL indicates that this is a vulnerable program. The application is fully prepared to handle the case when it does not find the DLL.

The attacker knows this information about the application and controls the CWD. ShellExecute and CreateProcess Variations of these issues can also exist when developers call similar functions such as ShellExecute and CreateProcess to load external executables. Recommended steps for software developers We recommend that developers do the following: Validate their applications for instances of nonsecure library loads examples of each are given later in this article.

These include the following: The use of SearchPath to identify the location of a library or component. The use of LoadLibrary to identify the version of the operating system.

Set up Process Monitor with the following filters: If a vulnerable path is being hit, you will see something that is similar to the following: The call to the remote file share to load a DLL indicates that this is a vulnerable program.

Need more help? Expand your skills. Get new features first. Was this information helpful? Yes No. When this process completes, I would hopefully have a list of valid DLL hijacks written to a text file. It accepts a path to the CSV file generated by ProcMon, a path to your malicious DLL, a path to the process you want to start, and any arguments you want to pass to the process.

I found the following hijacks for Slack:. Running through the above process again:. I found the following hijacks for Microsoft Teams:. Note: I had to make a small modification to the PowerShell script to kill Teams. Repeating the process outlined above, I found the follow hijacks for Visual Studio Code:. I found this interesting and wanted to understand what was causing this behavior. This behavior was consistent between all three applications.

I determined this behavior was related to delay-loaded DLLs. I opened wtsapi Double-clicking the found string leads you to its location in memory. Right-clicking the location in memory, we are able to find any references to this address. Looking at documentation on this structure, we can confirm it is related to delay-loaded DLLs. In all three applications:. Observe anything interesting? Then, you can use it to scan the drive you want to recover data from and check whether you can find the files you want to recover from the scan results.

Free Download. In this case, you will need to recover data from your computer hard drive. Thus, you need to use the This PC module of this software. This software is very easy-to-use. You can open it, select the target drive to scan, and then find your needed files.