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
2024-06-04
Category
Analytics Alert Reference
Order
Alert name

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

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.