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).
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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