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Thursday, March 22, 2012

What is FUD Crypter and how to utilize it to Bypass antivirus detection for RATs plus viruses

I have already created about Keyloggers inside my past articles, like Azure AIO Keylogger, Star Tools, Ref Stealer and other keyloggers previously to hack email account passwords. I have mentioned about antiviruses detecting keyloggers because hacking softwares (viruses) and hence, hacker has to employ Crypters to avoid antivirus detection for keyloggers. Here i'll tell we anything more about Crypters - hacking software for bypassing antivirus detections.


What is Crypter?
As mentioned above, Crypter is software chosen to hide our viruses, keyloggers or any RAT tool from antiviruses thus that they are not detected plus deleted by antiviruses. So, a crypter is a system that enable users to crypt the source code of their system. Generally, antivirus function by splitting source code of application and then look for certain string in source code. If antivirus detects any certain malicious strings, it either stops scan or deletes the file because virus from system.

What does Crypter do?

Crypter merely assigns hidden values to each individual code inside source code. Thus, the source code becomes hidden. Hence, the transmitted crypted trojan or virus bypass antivirus/virus cleaner's detection and the purpose of hacking them is fulfilled without any AV hindrance. Not only does this crypter hide source code, it can unpack the encryption once the application is executed.

What is FUD?

FUD is acronym for Fully UnDetectable. With improved utilize of Crypters to bypass antiviruses, AV became more advanced and began including crypter definitions to even detect crypter strings within code. So, employ of crypter to hide Ardamax keylogger and RATs became more complicated because today, no publicly available crypter is FUD.

So, should you crypt RATs with publicly accessible crypters, they are bound to be detected by antiviruses. This is because many FUD crypters stay "FUD" for maximum of 1 or two days following their public release. To obtain FUD crypters, you need to either look for it in hacking forums or create 1 (that is somewhat tedius.. I am working on this).

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