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Friday, November 9, 2012

Crypters Guide for beginners

What is a crypter?
A crypter is a program used to make viruses undetectable by anti-viruses.
Crypter types:
Runtime: Crypters that crypt your virus and when you run it in a computer it is undetectable by the anti-virus.
Scantime: Crypters that crypt your virus and when you scan it it is undetectable but when your run it in a computer the anti-virus detects it.
Crypter parts:

  • Client: The porgram where you can load your file and crypt it.
  • Stub: Stub is a filter for the file you chose at the client. If you delete it the client is useless but some crypters don’t have a stub.exe (internal stub).
FUD & UD
UD means UnDetectable.
FUD means Fully UnDetectable.
You can check if your crypted virus is FUD or UD at NoVirusThanks.
http://scanner.novirusthanks.org/

Always check “Do not distribute the sample”!
If your virus is FUD it will be like this:

Security Paper By : http://beginnerhacking.wordpress.com/2010/06/11/crypters-guide-for-beginners/

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