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01-18-2024 07:45 PM
Hi,
I'm reviewing a logs regarding a low reputation IP which in the first log it's action is dropped, and 5 minutes later 3 logs with action allowed. Why does it dropped then allowed it?
Logs
category: spyware
action: dropped
Threat Name: CobaltStrike.Gen Command and Control Traffic
Threat ID: 18005
01-22-2024 01:19 PM
Hello,
Not sure if its the case here however logs are typically written at 'session end'. We would need to see redacted logs to try and figure this out. Just black out the source and destination IP's along with anything that could identify your company etc.
Regards,
01-23-2024 12:35 AM
Hi, please find the ss below
01-23-2024 07:43 AM
Hello,
So the 'later' traffic is UDP (DNS-Base) so it has to 'time out' since there is no fin packets. This is the most likely reason for the later timestamp in the logs. The policy is most likely set to log at session end, which is best practice.
Hope this helps.
01-23-2024 10:42 PM
does UDP has fin packets?
01-23-2024 10:45 PM
i did a bit of research from your explanation, using the first link below to understand the session end. then using data from Session End reason: threat, i found out the answer in the second link. thanks for your help
https://docs.paloaltonetworks.com/pan-os/10-1/pan-os-admin/monitoring/use-syslog-for-monitoring/sysl...
https://knowledgebase.paloaltonetworks.com/KCSArticleDetail?id=kA14u000000HCQlCAO
01-29-2024 09:41 AM
Hello,
Glad you found what you needed.
Cheers!
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