Topher crypter6/3/2023 ![]() ![]() ![]() When injecting a PE into another process, it is going to have a new base address which is unpredictable. If it has, the Portable Executable Injection (PE Injection) technique will be used for process injection. Techniques used for process injection depend on whether the payload has Base Relocation Size or not. The Topher crypter creates a suspended process, where the malware payload is injected as a new instance of the current executable. For each sample, we are going to use the older version of 7zip (15.05) since newer versions do not support the unpacking of “.nsi” script used to control the installation tasks Note: A NSIS-based installer package is an archive that can be unpacked using 7zip. Let us take a quick look at the overview of some variants we’ve seen. Unknowing users open the program, which will force the crypter to decrypt itself and then release the malicious code.ĭuring our continuous monitoring of this Topher crypter, we observed 3 different variants in the past year. They then send these programs as part of an attachment within phishing emails and spammed messages. How Topher Crypters Spread Malicious CodeĬybercriminals build or buy crypters on the underground market in order to encrypt malicious programs then reassemble code into an actual working program. For this reason, one input source file will never produce an output file that is identical to the output of another source file. They use algorithms with random variables, data, keys, decoders, and more. Polymorphic crypters are more advanced than static crypters. Having separate stubs for each of these clients makes it easy for malicious actors to modify a stub once it is detected by a security software. Static/statisticalTopher crypters utilize stubs to make each encrypted file unique. Depending on the stub the Topher crypter uses, they can be classified as static/statistical or polymorphic. Crypters are used by cybercriminals in order to create malware that bypasses security programs by presenting itself as being a harmless program until it is installed.Ī crypter contains a specific crypter stub, which is the code used to encrypt and decrypt forms of malicious code. This makes it harder to detect by security programs. just go ahead and have a taste of this wonderful application and you will never regret this decision.Ī crypter is a specific type of software that has the ability to encrypt, obfuscate, and manipulate different kinds of malware. We believe that good code provides good results and as such, your search for a complete crypting solution has come to an end. Our primary goal is to provide customers with a complete solution to fit their needs and give efficient and fast results. This increases the FUD time of the binary by a considerable amount. it is ensured that your build will be highly different. With its strong unique stub generator system. It has evolved very much since its previous versions and we have included a large variety of new features to provide a complete and stable file crypting solution. Topher Crypter is a crypter coded from scratch in C#. ![]()
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