![]() ![]() In this case, when you try to read something from the disk antivirus checks content using image signatures and if there is a virus block it calls and shows the warning. Usually antivirus uses filter drivers located under the filesystem. Antiviruses filter all calls to file system and if you try to load a virus, they will see it and it doesn't matter if this file is hidden or not.Time quantum is in milliseconds and KiSwapContext is called very frequently so you can't hide anything from it. KiSwapContext is called when the time quantum of the thread ends. For example hook of KiSwapContext function. All popular antiviruses use some techniques to see hidden processes.Techniques are different - for example it can be direct call to filesystem driver or using of the system internal structure. ![]() All popular antiviruses use some techniques to see the hidden files.When you try to install driver antivirus can block this or ask you to make a choice.So all antiviruses and security products know how to bypass it. This is a popular technique of files and process hiding.To install the driver you must have Administrator right.But it surely was not the aim of our article. It's up to you! One may think that the described technique is good for virus creation. Storing of the parameters in the registry or *.xml file.Hiding of opened handles (file, process, etc.).Hiding of the list of services and drivers.More interesting features can be added using SST hooking but they were not implemented in this project frame: Due to the limited terms we implemented only two such plug-ins with expanded functionality. Filtering of the access by the user nameĪ lot of time was spent to create the Universal Subsystem of Interceptions where the implementation of the given interception is a kind of plug-in.Filtering of the access by the name of the process that requested for access.Support of the wildcards in the names of files, processes, users.Correct work on the multiple-processor systems.This article is written as the result of one education project implemented during ApriorIT students courses.ĭuring the project implementation we add some features that were not mentioned in the initial task: In addition, they should not be available for such Windows API functions as FindFile(), OpenFile() and other File API functions. The files selected by the user should be invisible for such file managers as Windows Explorer, Far, Total Commander, etc. In addition, they should not be available for such Windows API functions as EnumProcesses(), OpenProcess(), EnumProcessModules(), and other Process APIs. The task: The processes selected by the user should be invisible for such applications as the Task Manager, Process Explorer, and others. The main idea of this work is to create a driver for hiding of selected processes and files. We are glad to introduce our project - "The Hide Driver project". Change the results returned by the original function.Legal reason to hide processes and files. ![]()
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