> 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-from-a-signed-process.md).
# Globally uncommon root-domain port combination from a signed process
### 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 | Stealth (TA0005), Command and Control (TA0011) |
| ATT\&CK Technique | System Binary Proxy Execution (T1218), Application Layer Protocol (T1071) |
| Severity | Low |
### Description
A signed process connected to an external domain on 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 in the context of a signed process to avoid detection.
### Investigative actions
* Check the destination domain reputation.
* 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 from an injected thread in a signed process
**Synopsis**
| Field | Value |
| ----------------- | ---------------------------------------------------------------------------------------------------- |
| ATT\&CK Tactic | Stealth (TA0005), Command and Control (TA0011) |
| ATT\&CK Technique | System Binary Proxy Execution (T1218), Application Layer Protocol (T1071), Process Injection (T1055) |
| Severity | High |
**Description**
An injected thread in a signed process connected to an external domain on 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 in the context of a signed process to avoid detection.
**Investigative actions**
* Check the destination domain reputation.
* 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 from a signed process
**Synopsis**
| Field | Value |
| ----------------- | ------------------------------------------------------------------------- |
| ATT\&CK Tactic | Stealth (TA0005), Command and Control (TA0011) |
| ATT\&CK Technique | System Binary Proxy Execution (T1218), Application Layer Protocol (T1071) |
| Severity | High |
**Description**
A signed process connected to an external domain on 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 in the context of a signed process to avoid detection.
**Investigative actions**
* Check the destination domain reputation.
* 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 from a signed process
**Synopsis**
| Field | Value |
| ----------------- | ------------------------------------------------------------------------- |
| ATT\&CK Tactic | Stealth (TA0005), Command and Control (TA0011) |
| ATT\&CK Technique | System Binary Proxy Execution (T1218), Application Layer Protocol (T1071) |
| Severity | High |
**Description**
A signed process connected to an external domain on 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 in the context of a signed process to avoid detection.
**Investigative actions**
* Check the destination domain reputation.
* 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 from a signed process
**Synopsis**
| Field | Value |
| ----------------- | ------------------------------------------------------------------------- |
| ATT\&CK Tactic | Stealth (TA0005), Command and Control (TA0011) |
| ATT\&CK Technique | System Binary Proxy Execution (T1218), Application Layer Protocol (T1071) |
| Severity | Medium |
**Description**
A signed process connected to an external domain on 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 in the context of a signed process to avoid detection.
**Investigative actions**
* Check the destination domain reputation.
* 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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