Ive been practicing my C# lately on a new system. Compiling is fine, however when I try to run the generated .exe file, avast! thinks it is malware and runs it in the sandbox for a while (and it doesn't work in the sandbox as it should work normally), and only when it has finished scanning it will it let me run it normally.
...manually edit[ing] the line where the path for the exception is. So, using the "browse" button, select first the folder, and then edit the resulting path and "add" to exclusions. You can also use "*" and "?".
As others have mentioned, the culprit is DeepScreen. It's especially bad if you have Avast set to Silent/gaming mode because then you can get unexpected/bizarre behavior and have no idea why. (I spent an entire day debugging the installer for a program I'm developing because it suddenly started running twice every single time I launched it--DeepScreen is very forgetful--and only succeeding on the the second run.)
Going under Settings, Update, Details, you can turn off popups for the majority of them--the annoying update-related popups, which should make it easier to work undisturbed, play video games, etc. But DeepScreen popups still pop up!
Unfortunately, the only way I currently have of disabling DeepScreen (in Avast 2014.9.0.2021) is to disable all shields! And I'm not even sure that this is working, since I sometimes get DeepScreen popups even with all shields disabled. Avast can't be prevented from starting with Windows during boot, so maybe uninstalling Avast is the only solution.
I have tried all of the other solutions, like adding an exclusion or deep screen exclusion or exclusion to File System Component shield or disabling deepscreen, etc. The only solution that works for me is to stop the Avast service in services.msc or Computer Management/Services.
Done all the things above (including scanning/excluding the directory/exec where the exec is located) but 20 second after starting, avast kill it. No message, no quarantine, but i have found a way to circumvent the problem:
After installing or upgrading to a paid Avast product, you may need to activate your subscription by entering a valid activation code (sometimes called a subscription code or license key) into the application.
Avast released its analytical tool, RetDec, to help the cybersecurity community fight malicious software. The tool allows anyone to study the code of applications to see what the applications do, without running them. Let's fight the bad guys together!
As we announced in our Botconf 2017 presentation at the beginning of December (slides), RetDec, our machine-code decompiler, is now open, which means anyone can freely use it, study its source code, modify it, and redistribute it.
The goal behind open sourcing RetDec is to provide a generic tool to transform platform-specific code, such as x86/PE executable files, into a higher form of representation, such as C source code. By generic, we mean that the tool should not be limited to a single platform, but rather support a variety of platforms, including different architectures, file formats, and compilers. At Avast, RetDec is actively used for analysis of malicious samples for various platforms, such as x86/PE and ARM/ELF.
The source code of the decompiler and other related tools is now available on GitHub under the MIT license. By open-sourcing the decompiler, we would like to make its use more widespread and invite others to cooperate with us on its continued development.
A decompiler is a program that takes an executable file as its input and attempts to transform it into a high-level representation while preserving its functionality. For example, the input file may be application.exe, and the output can be source code in a higher-level programming language, such as C. A decompiler is, therefore, the exact opposite of a compiler, which compiles source files into executable files; this is why decompilers are sometimes also called reverse compilers.
By preserving a program's functionality, we want the source code to reflect what the input program does as accurately as possible; otherwise, we risk assuming the program does one thing, when it really does another.
Generally, decompilers are unable to perfectly reconstruct original source code, due to the fact that a lot of information is lost during the compilation process. Furthermore, malware authors often use various obfuscation and anti-decompilation tricks to make the decompilation of their software as difficult as possible.
RetDec addresses the above mentioned issues by using a large set of supported architectures and file formats, as well as in-house heuristics and algorithms to decode and reconstruct applications. RetDec is also the only decompiler of its scale using a proven LLVM infrastructure and provided for free, licensed under MIT.
Decompilers can be used in a variety of situations. The most obvious is reverse engineering when searching for bugs, vulnerabilities, or analyzing malicious software. Decompilation can also be used to retrieve lost source code when comparing two executables, or to verify that a compiled program does exactly what is written in its source code.
You may have already heard about disassemblers and may think that a decompiler is basically the same thing. Wrong. There are several important differences between a decompiler and a disassembler. The former tries to reconstruct an executable file into a platform-agnostic, high-level source code, while the latter gives you low-level, platform-specific assembly instructions. The assembly output is non-portable, error-prone when modified, and requires specific knowledge about the instruction set of the target processor. Another positive aspect of decompilers is the high-level source code they produce, like C source code, which can be read by people who know nothing about the assembly language for the particular processor being analyzed.
We would like to note that many different types of decompilers exist. RetDec is a machine-code decompiler, which means it only supports the decompilation of programs executing native processor code (e.g. for Intel x86). A machine-code decompiler is thus unable to decompile bytecode (e.g. .NET, Python, Java).
RetDec is a machine-code decompiler that has been in development since 2011. It was originally created as a joint project by the Faculty of Information Technology of the Brno University of Technology in the Czech Republic, and AVG Technologies. Since the acquisition of AVG Technologies by Avast in 2016, Avast has continued to develop the decompiler.
The name RetDec stands for Retargetable Decompiler. We have already explained what a decompiler is, but what is a retargetable decompiler? We decided to give the decompiler the name because it is not limited to a single target architecture, operating system, or executable file format.
The easiest way to try out the decompiler is via our web service. From your favorite web browser, you simply upload the executable file you want to decompile and press the decompilation button. After the decompilation finishes, you can view the results:
If you want a more programmatic access, you can use our REST API, which allows anyone to write applications that interact with RetDec by sending HTTP requests. The easiest (and recommended) way of using the decompiler via the API is by using retdec-python:
Finally, since the source code of the decompiler is available on GitHub, you can build, install, and use our decompiler directly on your PC. Currently, RetDec supports the Linux and Microsoft Windows operating systems.
Information belonging to over 100 Italian banks breached by the Ursnif banking trojan was obtained by Avast Threat Labs, which then shared the data with as many of the victims as could be identified.
Hi, has anyone else had an issue with phishing alerts when opening new tabs? Any time I open something in a new tab I get an alert about phishing. I have reported it a couple of times to Avast but they haven't been able to solve it.
The reason this alert is showing is that Avast is checking on the HubSpot tracking code (this happens sometimes). Since it is not malware, the way to resolve this is to add '
hubspot.net' to Avast's safe list.
Researchers for Avast have developed a decryptor for the Akira ransomware and released it for public download. The Akira ransomware appeared in March 2023 and since then, the gang claims successful attacks on various organizations in the education, finance and real estate industries, amongst others.
Skip to how to use the Akira Ransomware Decryptor
Note that this ransomware is not related to the Akira ransomware discovered by Karsten Hahn in 2017 and our decryptor cannot be used to decrypt files from this old variant.
The Akira ransomware comes as a 64-bit Windows binary written for Windows operating system. It is written in C++ with heavy support from C++ libraries. Additionally, Boost library was used to implement the asynchronous encryption code. The binary is linked by Microsoft Linker version 14.35.
The Linux version of the Akira ransomware works identically like its Windows counterpart. Encrypted files have the same extension and the same encryption schema. Obviously, Windows CryptoAPI is not available on Linux, so the ransomware authors used Crypto++ library to cover the parts that are handled by CryptoAPI in Windows.
Our team is currently developing a Linux version of our decryptors. In the meantime, the Windows version of the decryptor can be used to decrypt files encrypted by the Linux version of the ransomware. Please use WINE layer to run the decryptor under Linux.
6. The next page is where the password cracking process takes place. Click Start when you are ready to begin. This process usually only takes a few seconds but will require a large amount of system memory. This is why we strongly recommend using the 64-bit version of the decryption tool.
Once the password is found, you can continue to decrypt all the encrypted files on your PC by clicking Next.
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