I have enough experience with UPX to know that it's a fairly good packer. If you placed the backdoor into the code yourself, I'm not surprised that the packed version is UD by most virus-scanner.
Doesn't make it any less of a backdoor. -- Razi On 3/27/08, zwell.nosec <[EMAIL PROTECTED]> wrote: > Just do it yourself pls, using the "backdoored" pangolin.exe you think and > decompress it, then upload to virustotal, I did not change any bits ;) > > -----邮件原件----- > 发件人: Razi Shaban [mailto:[EMAIL PROTECTED] > 发送时间: 2008年3月27日 14:32 > 收件人: zwell.nosec > 抄送: full-disclosure@lists.grok.org.uk; [EMAIL PROTECTED] > 主题: Re: [Full-disclosure] The reason why "Pangolin is backdoor" > > > Wow! Cryptors prevent viruses from being detected? > > Who would have thought! > > > -- > Razi > > > On 3/27/08, zwell.nosec <[EMAIL PROTECTED]> wrote: > > Pangolin really is a backdoor? Let's do this step to make sure: > > 1.Download UPX from upx.sf.net > > 2.In cmd shell, run "upx.exe -d pangolin.exe" > > 3.Upload the new pangolin.exe(actually the origin) to virustotal > > 4.Check the result again > > I do these, and the result is: > > http://www.virustotal.com/analisis/b9d55c751d5eed7b34cda3fe708b1bd7 > > > > We can see > > > Kaspersky,Sophos,F-Secure,CAT-QuickHeal,F-Prot,Ikarus,AntiVir,Prevx1,TheHack > > er,Webwasher-Gateway will not alert any more. > > > > You judge what is it! Or maybe we should think about what does these > > Antivirus do??? > > > > Thanks ;) > > > > _______________________________________________ > > Full-Disclosure - We believe in it. > > Charter: http://lists.grok.org.uk/full-disclosure-charter.html > > Hosted and sponsored by Secunia - http://secunia.com/ > > > >
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