Globally uncommon root-domain port combination by a common process (sha256)

Cortex XDR Analytics Alert Reference by Alert name

Product

Cortex XDR

Last date published

2024-10-08

Synopsis

Activation Period	14 Days
Training Period	30 Days
Test Period	N/A (single event)
Deduplication Period	1 Day
Required Data	Requires: XDR Agent
Detection Modules
Detector Tags	Global Anomaly Analytics
ATT&CK Tactic	Command and Control (TA0011)
ATT&CK Technique	Application Layer Protocol (T1071)
Severity	Informational

Description

A process with a common sha256 connected to an external domain in a specific port that, on a global level, it usually doesn't connect to.

Attacker's Goals

Attackers may use various methods to execute code from a context of another process to avoid detection.

Investigative actions

Check if the actor process loaded a suspicious DLL before the alert.
Check if the actor process was injected before the alert.
Check if the process execution and connections are legitimate.

Variations

Globally uncommon root-domain port combination by a common process (sha256) from an injected thread

Synopsis

ATT&CK Tactic

ATT&CK Technique

Severity

High

Description

A process with a common sha256 connected to an external domain in a specific port that, on a global level, it usually doesn't connect to.

Attacker's Goals

Attackers may use various methods to execute code from a context of another process to avoid detection.

Investigative actions

Check if the actor process loaded a suspicious DLL before the alert.
Check if the actor process was injected before the alert.
Check if the process execution and connections are legitimate.

Globally uncommon and very rare root-domain port combination by a common process (sha256)

Synopsis

ATT&CK Tactic	Command and Control (TA0011)
ATT&CK Technique	Application Layer Protocol (T1071)
Severity	Medium

Description

A process with a common sha256 connected to an external domain in a specific port that, on a global level, it usually doesn't connect to.

Attacker's Goals

Attackers may use various methods to execute code from a context of another process to avoid detection.

Investigative actions

Check if the actor process loaded a suspicious DLL before the alert.
Check if the actor process was injected before the alert.
Check if the process execution and connections are legitimate.

Globally uncommon root-domain port combination by a common process (sha256) from a known vendor

Synopsis

ATT&CK Tactic	Command and Control (TA0011)
ATT&CK Technique	Application Layer Protocol (T1071)
Severity	Medium

Description

A process with a common sha256 connected to an external domain in a specific port that, on a global level, it usually doesn't connect to.

Attacker's Goals

Attackers may use various methods to execute code from a context of another process to avoid detection.

Investigative actions

Check if the actor process loaded a suspicious DLL before the alert.
Check if the actor process was injected before the alert.
Check if the process execution and connections are legitimate.

Globally uncommon and rare root-domain port combination by a common process (sha256)

Synopsis

ATT&CK Tactic	Command and Control (TA0011)
ATT&CK Technique	Application Layer Protocol (T1071)
Severity	Low

Description

A process with a common sha256 connected to an external domain in a specific port that, on a global level, it usually doesn't connect to.

Attacker's Goals

Attackers may use various methods to execute code from a context of another process to avoid detection.

Investigative actions

Check if the actor process loaded a suspicious DLL before the alert.
Check if the actor process was injected before the alert.
Check if the process execution and connections are legitimate.