Hello,

On Tue, 27 Dec 2016 03:06:31 +0000 Joel Esler (jesler) wrote:

> We QA against thousands of clean files for each signature.  But we don't have 
> s copy of every foe in the world to QA against.  
> 
> When people send in false positives, if we determine them to be actually 
> clean, we add them to the FP farm as well.  That's why FPs are important to 
> send in, not just to clean current FPs, but to prevent future ones.   
>

Don't have a sample (confidential file), but I have confirmation that this
was indeed an Excel .xlsm file.
Given the senders/recipients of the other Win.Trojan.Toa-5368540-0 FPs,
I'm willing to bet real money that it was the same type.

Christian

> --
> Sent from my iPhone
> 
> > On Dec 26, 2016, at 9:27 PM, Christian Balzer <ch...@gol.com> wrote:
> > 
> > 
> > Hello Al,
> > 
> >> On Mon, 26 Dec 2016 17:52:53 -0800 Al Varnell wrote:
> >> 
> >> Although most, if not all the Win.Trojan.Toa old signatures were either 
> >> dropped by Daily - 22782, I see it also added Win.Trojan.Toa-5368540-0, so 
> >> that would appear to be a new issue.
> >> 
> > Be that as it may, I'd say this isn't a new issue as such but a
> > continuation of what is clearly insufficient QA with these signatures.
> > 
> > I'd love to be more helpful, but since this are large mails I don't have a
> > complete bounce (Exim suppresses those over 100KB) and I don't have easy
> > access to any of the senders.
> > But it's with near certainty some attachment in a MS file format that
> > triggers these.
> > 
> > Regards,
> > 
> > Christian
> > 
> >> -Al-
> >> 
> >>> On Mon, Dec 26, 2016 at 05:24 PM, Christian Balzer wrote:
> >>> 
> >>> Hello,
> >>> 
> >>>> On Mon, 26 Dec 2016 19:21:25 -0000 Steve Basford wrote:
> >>>> 
> >>>> 
> >>>>> On Mon, December 26, 2016 6:55 pm, Mark Edwards wrote:
> >>>>> In keeping with the other false positive reports I have more than 400
> >>>>> CentOS servers report below after yesterday's freshclam update:
> >>>> 
> >>>> Yes, nashorn.jar seems to get hit too...
> >>>> 
> >>>> eg:
> >>>> 
> >>>> fp2\11476331d01: Win.Trojan.Toa-5372078-0
> >>>> fp2\200ENGI.EXE: Win.Trojan.Toa-5380327-0
> >>>> fp2\3A627716d01: Win.Trojan.Toa-5372078-0
> >>>> fp2\firefox-hot...@mozilla.org.xpi: Win.Trojan.Toa-5370166-0
> >>>> fp2\Microsoft Virtual PC 2004 MSDN.msi: Win.Trojan.Toa-5370996-0
> >>>> fp2\nashorn.jar: Win.Trojan.Toa-5370166-0
> >>>> fp2\startupCache.4.little: Win.Trojan.Toa-5370166-0
> >>>> 
> >>>> and the earlier reported FP's are still there:
> >>>> 
> >>>> fp\Aston Villa 1.4.3.ipa: Win.Trojan.Toa-5370166-0
> >>>> fp\greasemonkey-3.8-fx.xpi: Win.Trojan.Toa-5370166-0
> >>>> fp\imagus-0.9.8.45-fx+sm.xpi: Win.Trojan.Toa-5370166-0
> >>>> fp\l...@mozilla.org.xpi: Win.Trojan.Toa-5370166-0
> >>>> fp\omni.ja: Win.Trojan.Toa-5370166-0
> >>>> fp\org-netbeans-modules-javascript-nodejs.jar: Win.Trojan.Toa-5370166-0
> >>>> fp\privacy_badger-1.7.0-fx.xpi: Win.Trojan.Toa-5370166-0
> >>>> 
> >>>> etc.
> >>>> 
> >>>> IMHO, Win.Trojan.Toa* CDB sigs should ALL be pulled ASAP and QA testing 
> >>>> done
> >>>> in full after holidays.
> >>>> 
> >>> I can only second that.
> >>> And add Win.Trojan.Toa-5368540-0 to the list of FPs.
> >>> 
> >>> At this rate the previous bit about "Clamscan becoming its own worst
> >>> enemy." can not be underestimated.
> >>> This is the 2nd, VERY visible FP avalanche in so many months and since it
> >>> affects a lot of people here including internal business mails.
> >>> Reflecting badly on all OSS projects and SW.
> >>> 
> >>> Christian
> >>> 
> >>>> As the issues go on...
> >>>> 
> >>>> https://forum.kaspersky.com/index.php?s=252c49e91f4e5a6572be42fda3a1ff56&showtopic=363061
> >>>> 
> >>>> https://www.joomlashine.com/forum/other-products/169144-uniform-package-has-win-trojan-toa-5370166-0
> > 
> > 
> > -- 
> > Christian Balzer        Network/Systems Engineer                
> > ch...@gol.com       Global OnLine Japan/Rakuten Communications
> > http://www.gol.com/
> > _______________________________________________
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> > 
> > 
> > Help us build a comprehensive ClamAV guide:
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> > 
> > http://www.clamav.net/contact.html#ml
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> 


-- 
Christian Balzer        Network/Systems Engineer                
ch...@gol.com           Global OnLine Japan/Rakuten Communications
http://www.gol.com/
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