Approved: Fortect
If you receive an antivirus code error code, today’s guide is here to help.
Presentation
When I browse the Techies forums, I often see how some of the more (and many inexperienced) people quite often ask “How to make an antivirus” with non-standard languages (bat, PHP, … € ¦) and you have a bad idea, what an antivirus program is and how to configure it.
I have also seen the software “The Lots of People Antivirus “developed by children, with very few students still going to school, planning about 4 hours a day for several weeks. I’m not saying that children are inexperienced, I’m just saying that it takes either a lot of qualified people with full temporary jobs and a lot of time to release decent software, or pay a lot of money for them 🠙 ‘(in case of protection, they are not voluntary).
So, I’ll cover this by following the basic antivirus HTML coding guidelines for Windows and C / C ++. Here you can find tips on how to develop some anti-virus engine, or find out how much is built.
Defense
For good coverage, a must-have antivirus must have at least one driver to be able to run a certain number in the kernel and have direct global access to the kernel API. Since Vista, Microsoft has learned that the antivirus industry needs keys that can penetrate the kernel and re-enable filters at strategic locations such as files such as the system, PC, and network. Don’t get awayTry if developing antivirus software for systems prior to Vista can be a real challenge because it was no longer meant to be.
- However, in systems prior to Vista, antivirus vendors used rootkit-like features to protect doors (although Microsoft does not recommend this at all) for added protection. It uses what we call “hooks” (API workarounds for filtering purposes).
- In Vista +, Microsoft provided an API for injecting our custom low-level user space between calls and the kernel API. This option is used to register the anti-virus module in the kernel. In addition, this number-based system allows us to place the human system into security levels in which several objects can coexist with different goals. In the case of hooks, this was not the case, because the implementation is currently completely product-dependent.
NOTE. I probably will not describe interception workarounds for systems prior to Vista, as they are easy to find on the Internet, and so on.It would take a whole chapter to bind it in plain text anyway … but you have the same idea as the kernel API, except that you need to implement what Microsoft has provided for Vista + systems.
To find out the encoding of the drivers, you can see all the helpful links:
http://msdn.microsoft.com/en-us/library/windows/hardware/gg490655.aspx
http: / / www. codeproject.com / Articles / 9504 / Driver-Development-Part-1-Introduction-to-Drivers
Process
The first user protection launches malicious processes. This is the main thing. Antivirus should register the PsSetCreateProcessNotifyRoutineEx callback. In preparation for this, the antivirus callback will no doubt be notified and receive all the important information every time it is created, every process and when the main thread takes over (and invokes malicious objects).
It gets the process name, object, document, PID, and so on. When the technology is suspended, the driver may ask the service provider to scan the process memory for malicious operations. If it detects something, the main driver simply sets CreationStatus to FALSE and returns It is reported.
NTSTATUS PsSetCreateProcessNotifyRoutineEx ( _In_ PCREATE_PROCESS_NOTIFY_ROUTINE_EX NotifyRoutine, _In_ Delete);
VOID Boolean CreateProcessNotifyEx ( _Inout_ PROCESS PROCESS, Process ID _In_ HANDLE, _In_opt_ PPS_CREATE_NOTIFY_INFO CreateInfo);
structure typedef _PS_CREATE_NOTIFY_INFO SIZE_T size; assembly ULONG flags; composition ULONG FileOpenNameAvailable: 1; ULONG Reserved: 31; ; ; HANDLE ParentProcessId; CLIENT_ID CreateThreadId; struct _FILE_OBJECT * FileObject; Image file name PCUNICODE_STRING; command line PCUNICODE_STRING; the state of the creation of NTSTATUS; PS_CREATE_NOTIFY_INFO, * PPS_CREATE_NOTIFY_INFO;
Discussions
Like processes, threads can potentially be a vehicle for returning malicious elements and causing harm. For example, you can create code in a legitimate process and run a remote thread for that software in the context of the process (just to follow 🠙 ‚?). How the lawful road can commit malicious acts. May
We are filtering pure streams using the PsSetCreateThreadNotifyRoutine callback. Often a thread is created every day, the antivirus receives a notification using the TID and PID. Thus, he can check the currentthe initial address code of the stream, parse it and stop the stream, or continue the article.
NTSTATUS PsSetCreateThreadNotifyRoutine ( _In_ PCREATE_THREAD_NOTIFY_ROUTINE NotifyRoutine);
NULL(* PCREATE_THREAD_NOTIFY_ROUTINE) ( IN HANDLE process identifier, IN HANDLE ThreadId, IN BOOLEAN Create );
Photo
The third dynamic threat is related to images that can be stored in memory. An image is a PE file, EXE file, DLL file, or SYS file. To be notified of uploaded images, simply register with PsSetLoadImageNotifyRoutine. This callback allows us to receive warnings when it is loaded into memory, especially if it never runs virtually. We can then tell when a process is trying to load a DLL, load a driver, or start a new process.
The callback information is for the full path of the image (useful for parsing audio) and, in my opinion, more importantly, the base address of the image (for in-memory parsing). If the image is malicious, the antivirus can usually use a little trick to avoid launching, z>
NTSTATUS PsSetLoadImageNotifyRoutine ( _In_ PLOAD_IMAGE_NOTIFY_ROUTINE NotifyRoutine);
Approved: Fortect
Fortect is the world's most popular and effective PC repair tool. It is trusted by millions of people to keep their systems running fast, smooth, and error-free. With its simple user interface and powerful scanning engine, Fortect quickly finds and fixes a broad range of Windows problems - from system instability and security issues to memory management and performance bottlenecks.
NULL (* PLOAD_IMAGE_NOTIFY_ROUTINE) ( __in_opt PUNICODE_STRING FullImageName, __ in process ID HANDLE, __in PIMAGE_INFO BildInfo );
structure typedef _IMAGE_INFO Association ULONG properties; composition Image addressing mode ULONG: - 8; // Code addressing mode ULONG SystemModeImage? 1; // image in system mode ULONG ImageMappedToAllPids: 1; // displayed in all processes ULONG Reserved at 22; ; ; PVOID-ImageBase; ULONG Image Selector; ULONG image size; ULONG ImageSectionNumber; IMAGE_INFO, * PIMAGE_INFO;
filesystem
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ClamAV can often be used for malware scanning, adware detection, or malware analysis. The target users for the name of this tool are the general public, malware observers and system administrators.
ClamAV is an open source antivirus code reader that can be downloaded from its online site. It’s not particularly good, although it serves its purpose (like a simple Linux antivirus). If you are looking for a complete antivirus, ClamAV is not for you. To do this, you will need one of the best antivirus software of 2021.
Code Red, as it was later called, targets vulnerable IP addresses, attacking those using Microsoft Windows 2000 or NT. Since Code Red is actually a fileless worm that resides in most of the system memory, the tools and time foranti-malware shields and scans were not equipped to stop and / or possibly remove it.
