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. tactic: TA0011 ✕
Download CSV| Type | Name | Severity | Module | Data source / event | ATT&CK |
|---|---|---|---|---|---|
| Analytics BIOC | Abnormal communication with a rare combination of TLS and HTTP User Agent Abnormal communication with a rare combination of TLS and HTTP User Agent to an external address. | Low | Platform Analytics | Palo Alto Networks Firewall EAL Logs, XDR Agent | Command and Control, Exfiltration |
| Analytics BIOC | Abnormal network communication with a rare combination of HTTP User Agent and HTTP Server Abnormal network communication with a rare combination of HTTP User Agent and HTTP Server to an external address. | Informational | Platform Analytics | Palo Alto Networks Firewall EAL Logs, XDR Agent | Command and Control, Exfiltration |
| 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 | Failed DNS The endpoint is performing DNS lookups that are failing at an excessively high rate when compared to its peer group. This alert might be symptomatic of malware that is trying to connect to its command and control (C2) servers. The attacker's C2 server runs on one or more domains that can eventually be identified and blacklisted. To avoid this, malware will sometimes use Domain Generation Algorithms (DGA) that produce many domain names every day. Because only a few of these domains are ever registered, the installed malware must blindly try to access each generated domain name in an effort to locate an active one. | Low | Platform Analytics | Palo Alto Networks Firewall EAL Logs, XDR Agent | Command and Control |
| Analytics | HTTP with suspicious characteristics Uncommon HTTP communication was performed by the host that might indicate its attempt to hide malicious activities. | Low | Platform Analytics | Palo Alto Networks Firewall EAL Logs, XDR Agent | Command and Control, Exfiltration |
| Analytics | Random-Looking Domain Names The endpoint performed DNS lookups to an excessively large number of apparently random root domain names. This alert might be symptomatic of malware that is trying to connect to its command and control (C2) servers. The attacker's C2 server runs on one or more domains that can eventually be identified and blacklisted. To avoid this, malware will sometimes use Domain Generation Algorithms (DGA) that produce many unique, random-looking domain names every day. Because only a few of these domains are ever registered, the installed malware must blindly try to access each generated domain name in an effort to locate an active one, which may also trigger the Failed DNS alert. | Medium | Platform Analytics | Palo Alto Networks Firewall EAL Logs, XDR Agent | Command and Control |
| Analytics | Rare access to known advertising domains The endpoint performed many connections to unpopular advertising domains. This could indicate the presence of adware on the endpoint. | Informational | Platform Analytics | Palo Alto Networks Firewall EAL Logs, XDR Agent | Command and Control, Persistence |
| Analytics BIOC | Recurring access to rare domain The endpoint is periodically connecting to an external domain (categorized as malware) that it and its peers rarely use. Access to this domain has occurred repeatedly over multiple days. This connection pattern is consistent with malware connecting to its command and control server for updates and operating instructions. | Low | Platform Analytics | Palo Alto Networks Firewall EAL Logs, Palo Alto Networks Firewall threat Logs, XDR Agent, Third-Party Firewalls | Command and Control |
| Analytics BIOC | Suspicious ICMP packet An ICMP router advertisement was sent by a host. | Low | Platform Analytics | Palo Alto Networks Firewall EAL Logs, XDR Agent | Command and Control |