topic Recent Change - creation of Threat ID #8002 Alerts in Cortex in Cortex XDR Discussions

Recent Change - creation of Threat ID #8002 Alerts in Cortex

KRisselada — Thu, 31 Dec 2020 17:08:55 GMT

Hello all,
Beginning on or around 14/15 December, I began to notice we were commonly generating the following Alerts in Cortex:

Alert name: Threat ID #8002

Description: Scan Detection

Alert Source: PAN NGFW

Category: Scan Detected via Zone Protection Profile

This is occurring on two different customers that have entirely different IT teams, but do both have PA NGFW managed via Panorama. Looking at each of their "EXPLORE" app in Cortex Hub, I see the firewalls have been generating these for a VERY long time, yet its only beginning late in the day on the 14th (and then continuing to today) that we have alerts in Cortex

I believe I have found the reason, but I am wondering if others see this also? Perhaps @vcotton or @ameyer would know more, based on the Cortex XDR Content Release Notes entry (https://live.paloaltonetworks.com/t5/cortex-xdr-articles/content-release-notes/ta-p/257570#) of 13 Dec? Specifically the bullet point that indicated Improved logic of 2 medium Analytics Alerts. Is it due to this Analytics improvement we are now seeing these in Cortex, when we were not before?

thank you (and happy new year all)

Re: Recent Change - creation of Threat ID #8002 Alerts in Cortex

KRisselada — Thu, 31 Dec 2020 23:44:23 GMT

also I should note that this LIVEcommunity discussion area seems to create a new avatar for discussions, if you happen to use a different browser, (but the same Palo Alto CSP account)

Re: Recent Change - creation of Threat ID #8002 Alerts in Cortex

gjenkins — Mon, 04 Jan 2021 20:03:17 GMT

Hi @KRisselada ,

The referenced alert's alert source is "PAN NGFW," indicating that it was sourced directly from a PAN firewall, not Analytics. With that said, Cortex XDR logic dictates that all PAN NGFW alerts resting in your CDLs should have a corresponding alert in their respective Cortex XDR tenant unless an alert exclusion was created to suppress that alert type. As such, I think that you may have identified a bug as you have verifiable alerts from the NGFWs of which are not shown in Cortex XDR as expected, which should be investigated by Support. If you are confident that no alert exclusion was created to suppress, please escalate to them at http://support.paloaltonetworks.com to investigate.