Rare AppID usage to a rare destination

Synopsis

Field	Value
Activation Period	14 Days
Training Period	30 Days
Test Period	N/A (single event)
Deduplication Period	14 Days
Required Data	Requires one of the following data sources: Palo Alto Networks Firewall traffic Logs OR XDR Agent OR Third-Party Firewalls
ATT&CK Tactic	Command and Control (TA0011)
ATT&CK Technique	Application Layer Protocol (T1071), Non-Standard Port (T1571)
Severity	Informational

Description

Rare AppID with port usage to rare destination.

Attacker's Goals

Attackers might use well-known ports with uncommon applications to avoid being detected by a non-application aware firewall or to bypass firewall rules based only on ports.

Investigative actions

Investigate the endpoints participating in the session.

Variations

Rare AppID usage to a rare destination using an unsigned process

Synopsis

Field	Value
ATT&CK Tactic	Command and Control (TA0011)
ATT&CK Technique	Application Layer Protocol (T1071), Non-Standard Port (T1571)
Severity	Low

Description

Rare AppID with port usage to rare destination.

Attacker's Goals

Attackers might use well-known ports with uncommon applications to avoid being detected by a non-application aware firewall or to bypass firewall rules based only on ports.

Investigative actions

Investigate the endpoints participating in the session.

Rare AppID usage to a rare destination from an internet-facing server

Synopsis

Field	Value
ATT&CK Tactic	Command and Control (TA0011)
ATT&CK Technique	Application Layer Protocol (T1071), Non-Standard Port (T1571)
Severity	Low

Description

Rare AppID with port usage to rare destination.

Attacker's Goals

Attackers might use well-known ports with uncommon applications to avoid being detected by a non-application aware firewall or to bypass firewall rules based only on ports.

Investigative actions

Investigate the endpoints participating in the session.