so today you will learn what is FUD crypter? FUD is acronym for fully undetectable.It is a software that can be used to encrypt your exe files. 

USES OF FUD CRYPTER? 
FUD crypters can be used to encrypt viruses,RAT,keyloggers,spywares etc to make them undetectable from antiviruses.When these exe files are encrypted with Fud crypters they become undetectable with antiviruses & firewallscrypter simply assigns hidden values to each individual code within source code. Thus, the source code becomes hidden. Hence, our sent crypted trojan and virus bypass antivirus detection and our purpose of hacking them is fulfilled without any AV hindrance. Not only does this crypter hide source code, it will unpack the encryption once the program is executed.

How Does FUD Crypter Work?  

The Crypter takes the original binary file of you exe and applies many encryption on it and stores on the end of file(EOF).So a new crypted executable file is created.
Original Exe Crypted Exe
001————- 010                                      101————-110
100|Original File|000->  Cryptor  ->010|Original File|110
010————- 111                                        110————-010

The new exe is not detected by antiviruses because its code is scrambled by the crypter.When executed the new .exe file decrypts the binary file into small the data small pieces at a time and injects them into another already existing process or a new empty one, OR it drops the code into multiple chunks in alternative data streams(not scanned by most a/v) then executes it as a .txt or .mp3 file.

Fud crypter:   download here  [184 KB]