Detectors
Every Cortex detection rule the toolbox knows about — analytics alerts, BIOCs and correlation rules — in one filterable set.
22 detectors match the current filters.
Download CSV| Type | Name | Severity | Module | Data source / event | ATT&CK |
|---|---|---|---|---|---|
| Analytics BIOC | A rare FTP user has been detected on an existing FTP server A rare or new FTP user has been detected on an existing FTP server. | Low | Platform Analytics | Palo Alto Networks Firewall EAL Logs | Initial Access, Collection |
| 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 | Abnormal RPC traffic to multiple hosts The endpoint performed unfamiliar RPC activity to multiple hosts. | Low | Platform Analytics | Palo Alto Networks Firewall EAL Logs, XDR Agent with eXtended Threat Hunting (XTH) | Reconnaissance |
| Analytics | Abnormal sensitive RPC traffic to multiple hosts The endpoint performed unfamiliar RPC activity to multiple hosts using a known sensitive interface. | Low | Platform Analytics | Palo Alto Networks Firewall EAL Logs, XDR Agent with eXtended Threat Hunting (XTH) | Lateral Movement |
| Analytics | Abnormal sensitive RPC traffic to multiple hosts from a rarely seen host The endpoint performed unfamiliar RPC activity to multiple hosts using a known sensitive interface. | Low | Platform Analytics | Palo Alto Networks Firewall EAL Logs, XDR Agent with eXtended Threat Hunting (XTH) | Lateral Movement |
| 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 BIOC | FTP Connection Using an Anonymous Login or Default Credentials An FTP connection using an anonymous login was detected. | Low | Platform Analytics | Palo Alto Networks Firewall EAL Logs | Initial Access, Credential Access |
| 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 | Multiple Suspicious FTP Login Attempts Multiple suspicious FTP sessions were detected, which may indicate a brute-force attempt. | Low | Platform Analytics | Palo Alto Networks Firewall EAL Logs | Initial Access, Credential Access |
| Analytics BIOC | Multiple uncommon SSH Servers with the same Server host key Multiple uncommon SSH servers were observed using the same host key. | Low | Platform Analytics | Palo Alto Networks Firewall EAL Logs, XDR Agent | Credential Access |
| Analytics BIOC | Okta FastPass reported phishing attack suspected Okta FastPass authentication reported a phishing attack suspected. | Low | Identity Analytics | Palo Alto Networks Firewall EAL Logs, XDR Agent, Palo Alto Networks Firewall threat Logs | Initial Access |
| Analytics BIOC | Possible path traversal via HTTP request The endpoint received a suspicious URI via an HTTP request that resembles a path traversal attempt. | Low | Platform Analytics | Palo Alto Networks Firewall EAL Logs, XDR Agent | Discovery |
| Analytics | Rare LDAP enumeration Possible LDAP enumeration with a rare combination of queries. | Low | Platform Analytics | Palo Alto Networks Firewall EAL Logs | Discovery |
| Analytics BIOC | Rare Scheduled Task RPC activity from a rarely seen host The endpoint performed abnormal Scheduled Task RPC activity to a remote host. | Low | Platform Analytics | Palo Alto Networks Firewall EAL Logs, XDR Agent with eXtended Threat Hunting (XTH) | Lateral Movement, Persistence |
| Analytics BIOC | Rare Windows Remote Management (WinRM) HTTP Activity The endpoint performed unfamiliar WinRM HTTP activity to a remote host. | Low | Platform Analytics | Palo Alto Networks Firewall EAL Logs, XDR Agent | Lateral Movement |
| 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 | Subdomain Fuzzing The root domain within the network is experiencing an unusually high number of access requests to its subdomains, significantly exceeding the typical activity levels for that domain. This anomaly could suggest that someone is attempting to enumerate subdomains or uncover additional virtual hosts associated with the domain, possibly as part of a reconnaissance effort to identify vulnerable or less-secured entry points into the network. | Low | Platform Analytics | Palo Alto Networks Firewall EAL Logs, XDR Agent | Reconnaissance |
| Analytics BIOC | Suspicious failed HTTP request - potential Spring4Shell exploit A potentially malicious failed HTTP request was received, possibly as part of a Spring4Shell exploitation attempt. | Low | Platform Analytics | Palo Alto Networks Firewall EAL Logs, XDR Agent | Initial Access |
| 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 |
| Analytics BIOC | Suspicious SSH Downgrade The endpoint asked for an ssh downgrade, ssh downgrade may enable attackers to perform attacks such as data decryption, man in the middle, session hijack, replay attack and more. | Low | Platform Analytics | Palo Alto Networks Firewall EAL Logs | Lateral Movement, Defense Evasion |
| Analytics BIOC | Unusual ADFS Remote Synchronization network connections from non-ADFS server Detected an unauthorized configuration sync request to the ADFS Policy Store from a non-ADFS server, step for forging SAML tokens in a Golden SAML attack. | Low | Platform Analytics | Palo Alto Networks Firewall EAL Logs, XDR Agent | Credential Access, Lateral Movement |