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u know that,don't u?
when a virus/spyware pack with UPX,the antivirus could not detect it.
ur app more effective,it will also made us more dangerous than ever.....
Lots of anti virus sw contain code that can unpack UPX compressed files. And don't forget, it's windows which make your system unsafe.
the code u mentioned didn't work at all ,since the UPX is so powerful.
would you please tell me ,what can I do with suspect exes compressed by UPX?
Maybe the UPX can make a little change that even a program was compressed ,still the source file's signature is unpacked that to make the antivirus can recognise it...
THX for the reply :)
You can manually decompress UPX compressed files using the "-d" command line option. After that you can run your virus scanner on it.
Please note, that there is no such thing that "THE program signature", it's just a general term anti-virus vendors use - every one of them have a different algorithm for computing their signatures.
Nowadays all antiviruses can "unpack" and check upx'ed executables.
Actually, UPX is arguably the most antivirus-friendly packer.