> 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/suspicious-udev-driver-rule-execution-manipulation.md).
# Suspicious Udev driver rule execution manipulation
### 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 with eXtended Threat Hunting (XTH) |
| ATT\&CK Tactic | Persistence (TA0003), Privilege Escalation (TA0004) |
| ATT\&CK Technique | Boot or Logon Autostart Execution: Kernel Modules and Extensions (T1547.006) |
| Severity | Low |
### Description
Udev driver rule was modified with unusual pattern, might be used by adversaries to backdoor existing drivers.
### Attacker's Goals
Adversaries can use this technique to execute arbitrary commands once the machine boots.
### Investigative actions
* Check if the action was done using an automation service.
* Check the rule modification content and look for any suspicious payloads.
* Check if there are any other suspicious activities originated from the same machine/executing user.
### Variations
Unusual Udev driver rule execution manipulation
**Synopsis**
| Field | Value |
| ----------------- | ---------------------------------------------------------------------------- |
| ATT\&CK Tactic | Persistence (TA0003), Privilege Escalation (TA0004) |
| ATT\&CK Technique | Boot or Logon Autostart Execution: Kernel Modules and Extensions (T1547.006) |
| Severity | Low |
**Description**
Udev driver rule was modified with unusual pattern, might be used by adversaries to backdoor existing drivers.
**Attacker's Goals**
Adversaries can use this technique to execute arbitrary commands once the machine boots.
**Investigative actions**
* Check if the action was done using an automation service.
* Check the rule modification content and look for any suspicious payloads.
* Check if there are any other suspicious activities originated from the same machine/executing user.
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