What is a crypter?

What is a crypter?

A Crypter is a unique type of protection Software. Unfortunately the term “crypter” is a term widely used in hacker forums which refers to software that undetects malware from Antivirus software. When we use the term “crypter” , we refer to the term as being “advanced protection software” which provides the benefit of resolving software conflicts of any kind through code undetection.

                                                       

                                                  What does FUD mean?                                                              

FUD stands for – Fully Undetected or Fully Undetectable

  Whats the difference between a Runtime and Scantime Crypter?

A Runtime Crypter encrypts the specified file and when executed (ran), it is decrypted in memory. This way antiviruses aren’t able to analyse the file before executed and after executed. A scantime Crypter encrypts the specified file so antiviruses aren’t able to analyse the file only before executed but NOT when executed.

                           
   How can I check which antiviruses detect a file?

There are many sites that offer file scanning and giving a report of antiviruses that detect it. One of the main issues causing crypters to eventually become detected is because after someone scans a crypted file on some of these scanner sites, the crypted files will then be distributed to the antivirus vendors. It is recommended to scan all files you crypt on 

http://scan4you.net
Or
vscan.novirusthanks.org/

             What is EOF and what is it used for?

EOF stands for End Of File. Some files like Bifrost, Medusa, and Cybergate require the end of file data in order to run without corruption, So If Crypters Don’t Preserve this end of file data your crypted file will become corrupt.

What is a USG?

 A USG is part of a crypter that generates a unique version of the stub (part of crypter used to encrypt and decrypt the specified file). The purpose of this is because FUD crypters don’t last forever and eventually crypters become detected after a period of time.

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