Detectors

Every Cortex detection rule the toolbox knows about — analytics alerts, BIOCs and correlation rules — in one filterable set.

28 detectors match the current filters.

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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 A user accessed an uncommon AppID A user accessed an uncommon AppID that is rarely accessed by them or anyone else in the organization. Informational Identity Threat Detection (ITDR) Palo Alto Networks Firewall EAL Logs, Palo Alto Networks Firewall threat Logs, Palo Alto Networks Firewall traffic Logs, XDR Agent Exfiltration
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 BIOC Bronze-Bit exploit A forwardable Kerberos ticket for delegation of a Protected User was observed. High Platform Analytics Palo Alto Networks Firewall EAL Logs, XDR Agent with eXtended Threat Hunting (XTH) Execution
Analytics BIOC Failed Login For a Long Username With Special Characters A long username containing special characters failed to log in to the domain. Informational Platform Analytics Palo Alto Networks Firewall EAL Logs, XDR Agent Initial Access
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 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 BIOC Rare DCOM RPC activity The endpoint performed abnormal DCOM RPC activity to a remote host. Informational Platform Analytics Palo Alto Networks Firewall EAL Logs, XDR Agent with eXtended Threat Hunting (XTH) Lateral Movement
Analytics BIOC Rare MS-Update Server was detected The endpoint requested an MS-Update operation from a rare update server. Informational Platform Analytics Palo Alto Networks Firewall EAL Logs Initial Access
Analytics BIOC Rare MS-Update traffic over HTTP The endpoint requested an MS-Update operation with abnormal HTTP traffic characteristics. Informational Platform Analytics Palo Alto Networks Firewall EAL Logs, XDR Agent Lateral Movement
Analytics BIOC Rare NTLM Usage by User Rare authentication by user account to host via NTLM. The user has not authenticated with NTLM in the past 30 days. This may be indicative of downgrade attacks from Kerberos to NTLM. Informational Identity Analytics Palo Alto Networks Firewall EAL Logs, XDR Agent Lateral Movement
Analytics BIOC Rare Remote Service (SVCCTL) RPC activity The endpoint performed abnormal RPC activity via Service Control Manager interface to a remote host. Informational Platform Analytics Palo Alto Networks Firewall EAL Logs, XDR Agent with eXtended Threat Hunting (XTH) Lateral Movement
Analytics BIOC Rare Scheduled Task RPC activity The endpoint performed abnormal Scheduled Task RPC activity to a remote host. Informational Platform Analytics Palo Alto Networks Firewall EAL Logs, XDR Agent with eXtended Threat Hunting (XTH) Lateral Movement, Persistence
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 BIOC Suspicious Encrypting File System Remote call (EFSRPC) to domain controller An Encrypting File System Remote call (EFSRPC) was made to a domain controller. Medium Platform Analytics Palo Alto Networks Firewall EAL Logs, XDR Agent with eXtended Threat Hunting (XTH) Lateral Movement
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 HTTP parameters detected The endpoint received suspicious HTTP parameters via an HTTP request, which may indicate attempts to exploit server components or web shell activity. Medium Platform Analytics Palo Alto Networks Firewall EAL Logs, XDR Agent Initial Access, Persistence
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 NTLM authentication with machine account A suspicious NTLM authentication attempt was made by a machine account. Informational Identity Analytics Palo Alto Networks Firewall EAL Logs, XDR Agent Credential Access
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 Unique client computer model was detected via MS-Update protocol A unique client computer model was detected via MS-Update protocol. Informational Platform Analytics Palo Alto Networks Firewall EAL Logs Initial Access
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
Analytics BIOC Weakly-Encrypted Kerberos TGT Response A weakly encrypted Kerberos TGT was issued by a domain controller. The encryption type is abnormal for this DC and results in a TGT that is easier to crack. This behavior may indicate a Skeleton Key attack. Informational Platform Analytics Palo Alto Networks Firewall EAL Logs, XDR Agent Credential Access, Defense Evasion, Persistence