> For the complete documentation index, see [llms.txt](https://cortex-docs.paloaltonetworks.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://cortex-docs.paloaltonetworks.com/analytics-alerts/alerts-by-name/globally-uncommon-root-domain-port-combination-by-a-common-process-sha256.md).
# Globally uncommon root-domain port combination by a common process (sha256)
### Synopsis
| Field | Value |
| -------------------- | ---------------------------------- |
| Activation Period | 14 Days |
| Training Period | 30 Days |
| Test Period | N/A (single event) |
| Deduplication Period | 1 Day |
| Required Data | XDR Agent |
| 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 the 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**
| Field | Value |
| ----------------- | ------------------------------------------------------------- |
| ATT\&CK Tactic | Command and Control (TA0011), Defense Evasion (TA0005) |
| ATT\&CK Technique | Application Layer Protocol (T1071), Process Injection (T1055) |
| 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 the 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**
| Field | Value |
| ----------------- | ---------------------------------- |
| 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 the 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**
| Field | Value |
| ----------------- | ---------------------------------- |
| 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 the 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**
| Field | Value |
| ----------------- | ---------------------------------- |
| 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 the 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.
---
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