Detectors
Every Cortex detection rule the toolbox knows about — analytics alerts, BIOCs and correlation rules — in one filterable set.
9 detectors match the current filters. technique: T1048 ✕
Download CSV| Type | Name | Severity | Module | Data source / event | ATT&CK |
|---|---|---|---|---|---|
| Analytics | DNS Tunneling 10 KB or more were sent encoded in subdomain names during a 10-minute window. All subdomains queried were under a single suspicious domain. DNS tunneling encodes data in DNS queries and responses, allowing an attacker to bypass firewalls and proxies to reach his or her command and control server, even when HTTP/S traffic is blocked. The endpoint may be remotely controlled by an attacker, and/or an attacker may have exfiltrated data from it. This detector is not supported when networking events arrive solely from Cortex XDR Linux agents. | Low | Platform Analytics | Palo Alto Networks Firewall EAL Logs, XDR Agent | Command and Control, Exfiltration |
| Analytics | Large Upload (FTP) The endpoint transferred an excessively large amounts of data to a single destination over FTP. Cortex XDR Analytics assumes endpoint traffic towards a specific destination should be about the same over long periods of time. For that reason, Cortex XDR detected this abnormal behavior of a large data upload. An attacker may be exfiltrating data directly to the internet using this protocol. | Low | Platform Analytics | Palo Alto Networks Firewall traffic Logs, XDR Agent | Exfiltration |
| Analytics | Large Upload (Generic) The endpoint transferred large amounts of data to an external site using a different protocol from HTTP/s, FTP, or SMTP. (A specific detector is used for each of those protocols.) Cortex XDR Analytics assumes that data transfers out of your network are ordinarily performed using one of those three services, so it expects that data transfers over all other ports to be low. For the same reason, Cortex XDR Analytics also assumes endpoint traffic towards a specific destination should be about the same over long periods of time. An attacker may be exfiltrating data directly to the internet. | Low | Platform Analytics | Palo Alto Networks Firewall traffic Logs, XDR Agent | Exfiltration |
| Analytics | Large Upload (HTTPS) The endpoint transferred an excessive amount of data to an external site over HTTPS. The destination is not a popular upload site for endpoints on your network, and the endpoint performing the upload has not previously downloaded a large amount of data from the site. The upload is considered excessive based on comparison to baseline measurements of HTTPS data transfers on your network. An attacker may be exfiltrating data directly to the internet. | Low | Platform Analytics | Palo Alto Networks Firewall traffic Logs, XDR Agent, Third-Party Firewalls | Exfiltration |
| Analytics | Large Upload (SMTP) The endpoint, which is not an internal SMTP server, emailed an excessive amount of data from your network. | Low | Platform Analytics | Palo Alto Networks Firewall traffic Logs, XDR Agent, Third-Party Firewalls | Exfiltration |
| Analytics | Sensitive Exchange mail sent to external users A user sent sensitive email messages to external users. | Informational | Identity Threat Detection (ITDR), SaaS Threat Detection, Email Security | Office 365 Audit | Collection, Exfiltration |
| Analytics | Suspicious DNS traffic 10 KB or more were sent encoded in subdomain names during a 10-minute window. All subdomains queried were under a single suspicious domain. DNS tunneling encodes data in DNS queries and responses, allowing an attacker to bypass firewalls and proxies to reach his or her command and control server, even when HTTP/S traffic is blocked. | Informational | Platform Analytics | Palo Alto Networks Firewall traffic Logs, XDR Agent | Command and Control, Exfiltration |
| Analytics | Uncommon increase in Azure Microsoft Graph API request sizes An identity executed multiple Microsoft Graph actions, leading to an uncommon increase in API request sizes. | Informational | Cortex Cloud | Azure Audit Log, Microsoft Graph Logs | Exfiltration |
| Analytics | Unusual attachment volume in outbound emails Numerous emails with substantial attachments sent by an internal sender to one or more external recipients within a short timeframe. | Informational | Email Security | Microsoft 365 Emails | Exfiltration |