Re: [Clamav-devel] ClamAV effectiveness

2013-10-11 Thread Joel Esler
On Oct 11, 2013, at 10:00 AM, David F. Skoll wrote: > Nick Johnson wrote: > >> If it's your opinion that 99% of .exe files are viruses, then >> configure your mail server to block .exe files. > > Yes, I already do that... but isn't that a bit of a copout? If ClamAV > is missing 80% of the vir

Re: [Clamav-devel] ClamAV effectiveness

2013-10-11 Thread Brandon Perry
Antivirus is a cop out anyway since it is essentially a reactive solution. It is simple to write custom payloads to be sent that aren't detected by AV. AV catches the low hanging fruit. On Fri, Oct 11, 2013 at 9:41 AM, Nick Johnson wrote: > I should mention that I am not a clamav developer, jus

Re: [Clamav-devel] ClamAV effectiveness

2013-10-11 Thread Nick Johnson
I should mention that I am not a clamav developer, just some guy on the list. On Fri, Oct 11, 2013 at 10:00 AM, David F. Skoll wrote: > Yes, I already do that... but isn't that a bit of a copout? If ClamAV > is missing 80% of the viruses that we receive, it's not terribly useful, > is it? > He

Re: [Clamav-devel] ClamAV effectiveness

2013-10-11 Thread David F. Skoll
Nick Johnson wrote: > If it's your opinion that 99% of .exe files are viruses, then > configure your mail server to block .exe files. Yes, I already do that... but isn't that a bit of a copout? If ClamAV is missing 80% of the viruses that we receive, it's not terribly useful, is it? Regards,

[Clamav-devel] UPX unpacking seems bogus even for simple exe

2013-10-11 Thread Paolo Di Prodi
Hello all, I am developing extensions for Clamav (at least that's my objective!) and was doing some preliminary tests with UPX. This is my test procedure: 1) compile a simple exe on windows + mingw with one main call function and no stdout: clean.exe 2) upx clean.exe -o clean.upx.exe 3) run clam