topic Re: Wildfire Alerts in General Topics

Wildfire Alerts

apackard — Thu, 22 Oct 2015 12:15:41 GMT

Has anyone else noted a materical change in 'dubious' Wildfire alerts in the last 24 hours?

We have seen a material shift - as if a new detection engine/function has been enabled (and may possibly be a bit too sensitive).

Re: Wildfire Alerts

AlexSieber — Thu, 22 Oct 2015 12:50:49 GMT

We see the same problem, already reported wrong detections but didn´t get feedback till now.

All of the file where categorized as malware because of suspicious network activity - but all there is to see in the pcap is the time sync with time.windows.com => akamai hosts

Now URL filtering gets ugly too, a Windows Update URL is categorized as malware O_O

Re: Wildfire Alerts

paul.smith — Thu, 22 Oct 2015 13:00:00 GMT

We're seeing similar alerts. Since midnight we've had ~55 Wildfire alerts. We typically see only 1 or 2 per week.

I've spot-checked about a dozen of our alerts. One commonality is that the most "severe" indicator is "connected to a malicious domain", triggered from the Win7 VM. I haven't made it into the PCAPs yet but the only "DNS queries" listed are "akadns.net", "akadns.org", or "time.windows.com". The only "Connections" listed are to a MS NTP server.

I have a feeling one of those domains has been flagged and now every Wildfire submission that targets it gets labeled as malware.

Re: Wildfire Alerts

apackard — Thu, 22 Oct 2015 13:01:10 GMT

Yeah - this is what we're seeing.

Looking at some of the sumamry results we also see reference to installing services etc, but nothing in the detailed data.

It looks to me like they're having problems with the engine incorrectly triggering.

Re: Wildfire Alerts

Brandon_Wertz — Thu, 22 Oct 2015 13:03:46 GMT

We've had 12 hits since 1am...Most of which were .xls or .pdf

0 in the previous 3 days.

Re: Wildfire Alerts

MGoodnow — Thu, 22 Oct 2015 13:07:33 GMT

We too are seeing numerous hits for .xls and .doc files starting this morning. They are at this time all legitimate files.

Re: Wildfire Alerts

BenjAudy.MTL — Thu, 22 Oct 2015 14:33:53 GMT

Same thing here since last night.

Benjamin

Re: Wildfire Alerts

JoshEasley — Thu, 22 Oct 2015 18:08:11 GMT

TAC just notified me that Wildfire had a bug this morning and that they patched it and if you are getting quick wildfire signature updates you should already have the fix. If not, download the latest signature update to get the fix.

Re: Wildfire Alerts

OtakarKlier — Thu, 22 Oct 2015 18:35:26 GMT

While we havent seen this particuylar issue. Ours is that the PAN's will fail to connect to the cloud for updates. I have a TAC case open and they informed me that the issue is on their end. Perhaps our failure to obtian the definitions that cause your issues is what spared us the headache.