Re: SID 32174 BLACKLIST DNS request for known malware domain sr.symcd.com - Osx.Backdoor.iWorm

[Y M <snort () outlook com>]

Same here, issue is not restricted to Firefox and does not seem OS/device specific. We are getting these on SID:32173 
as well.

YM

> From: gkay () netconsult co uk
> To: rmcglamery () pencor com; snort-sigs () lists sourceforge net
> Date: Wed, 15 Oct 2014 12:47:11 +0000
> Subject: Re: [Snort-sigs] SID 32174 BLACKLIST DNS request for known malware domain sr.symcd.com - Osx.Backdoor.iWorm
>
> Our side not restricted to FireFox.   However, looking at the other traffic between our clients and the IP address 
> 23.43.75.27 it seems to be OCSP requests.
>
> sr.symcd.com
> gtssl2-ocsp.geotrust.co
> gtglobal-ocsp.geotrust.com
> evcs-ocsp.ws.symantec.com
> svrsecure-oracle-ocsp.verisign.com
> volusion-ocsp.digitalcertvalidation.com                                                                               
>                                                                                   
>
>
> All requests regardless of the URL used have similar format in URI and download a file with the same name as the URI. 
>   
>
>
> Hope this helps in some way
>
> Greg Kay
>
>
> -----Original Message-----
> From: McGlamery, Russell [mailto:rmcglamery () pencor com] 
> Sent: 15 October 2014 13:24
> To: McGlamery, Russell; Greg Kay; 'snort-sigs () lists sourceforge net'
> Subject: Re: [Snort-sigs] SID 32174 BLACKLIST DNS request for known malware domain sr.symcd.com - Osx.Backdoor.iWorm
>
> I updated Firefox to version 33 on some of the nodes that were triggering the alerts and the alerts stopped.
>
> --
> Russ 
>
>
>
>
>
>
> On 10/15/14, 8:02 AM, "McGlamery, Russell" <rmcglamery () pencor com> wrote:
>
> > This looks line its something related to older versions of FireFox, I 
> > am trying to verify now.
> >
> > -----
> > Russ
> >
> >
> >
> >
> > On 10/15/14, 7:24 AM, "Greg Kay" <gkay () netconsult co uk> wrote:
> >
> > > Hi,
> > >
> > > We are getting a large amount of hits for this domain which appears to 
> > > be Symantec owned.  Fairly certain this is a false positive.
> > >
> > > * 1:32174 <-> ENABLED <-> BLACKLIST DNS request for known malware 
> > > domain sr.symcd.com - Osx.Backdoor.iWorm (blacklist.rules)
> > > * 1:32173 <-> ENABLED <-> BLACKLIST DNS request for known malware 
> > > domain s2.symcb.com - Osx.Backdoor.iWorm (blacklist.rules)
> > >
> > > IP address is associated with geotrust, thawte and verisign as well.
> > >
> > > Have checked the references to virustotal but haven't seen anything there
> > > suggesting its bad.   Maybe I'm missing something.
> > > www.virustotal.com/en/domain/s2.symcb.com/information/
> > > www.virustotal.com/en/domain/sr.symcd.com/information/
> > >
> > >
> > >
> > > Thanks
> > >
> > > Greg Kay
> > >
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>
> Registered in England and Wales: Company No 4509492, VAT No 802254076 
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> Important Notice:
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