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Wireshark-users: Re: [Wireshark-users] Trojans associate with Wireshark, WinPCap, etc

Date: Sun, 01 Nov 2015 10:25:22 -0800
ClamAV update process started at Sun Nov 01 05:58:39 2015

main.cvd is up to date (version: 55, sigs: 2424225, f-level: 60,
builder: neo)
daily.cld is up to date (version: 21031, sigs: 1645560, f-level: 63,
builder: neo)
bytecode.cld is up to date (version: 269, sigs: 47, f-level: 63,
builder: anvilleg)

Thanks for your response.


On Sun, Nov 1, 2015, at 10:14 AM, Gerald Combs wrote:
> Which versions of the main, daily, and bytecode databases are you using?
> On Friday clamscan was reporting that Win.Adware.Outbrowse-1168 was
> present in some of the 32-bit Windows installers.
> 
> If I run clamscan today with the following database versions on the same
> files the scans come up clean:
> 
> ----
> Sun Nov  1 08:27:42 2015 -> ClamAV update process started at Sun Nov  1
> 08:27:42 2015
> Sun Nov  1 08:27:43 2015 -> main.cld is up to date (version: 55, sigs:
> 2424225, f-level: 60, builder: neo)
> Sun Nov  1 08:27:43 2015 -> daily.cld is up to date (version: 21031,
> sigs: 1645560, f-level: 63, builder: neo)
> Sun Nov  1 08:27:43 2015 -> bytecode.cld is up to date (version: 269,
> sigs: 47, f-level: 63, builder: anvilleg)
> ----
> 
> 
> Note that AV false positives happen often enough that we maintain a list:
> 
> https://wiki.wireshark.org/FalsePositives
> 
> As does the NSIS team (which tends to impact the Wireshark and WinPcap
> installers):
> 
> http://nsis.sourceforge.net/NSIS_False_Positives
> 
> 
> On 11/1/15 9:46 AM, gedropi@xxxxxxxxxxx wrote:
> > Yes I am.  But these trojans were not present a on the 28th of October. 
> > Meaning that the database update since the 28th would have had to have
> > contained this misinformation. I have contacted ClamAV but they have not
> > responded yet.  SANS is involved in this issue as well.
> > 
> > On Sun, Nov 1, 2015, at 09:12 AM, Pascal Quantin wrote:
> >> 2015-11-01 17:58 GMT+01:00 <gedropi@xxxxxxxxxxx>:
> >>
> >>>
> >>> After discovering the attached trojans during a scan on the 30th, I
> >>> removed infected files, scrubbed the registry, repeated the scan. Nada.
> >>> Then, I needed to replace the networking tools by downloading fresh
> >>> copies of the removed, infected exe files.  Upon downloading various
> >>> tools from their respective websites, I repeated the virus scan to be
> >>> sure. All newly downloaded exe files were again infected with the same
> >>> trojans.
> >>>
> >>> Since all the Wireshark & WinPCap files were affected, I was wondering
> >>> if any of you out there have had the same experience?
> >>>
> >>> I hope that someone can help me brainstorm for a fix.  I need to use the
> >>> tools of the trade.
> >>>
> >>> Thanks for any ideas.
> >>>
> >>
> >> Hi,
> >>
> >> Are you using ClamAV by any chance? as reported by Gerald Comb
> >> (Wireshark's
> >> leader) on the development list (
> >> https://www.wireshark.org/lists/wireshark-dev/201510/msg00125.html) this
> >> seems to be a false positive reported to clamav.net.
> >>
> >> Best regards,
> >> Pascal.
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> 
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