> 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/autorun-inf-created-in-root-c-drive.md).

# Autorun.inf created in root C drive

### 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                                                                                                          |
| ATT\&CK Tactic       | Persistence (TA0003), Lateral Movement (TA0008)                                                                    |
| ATT\&CK Technique    | Hijack Execution Flow: Services File Permissions Weakness (T1574.010), Replication Through Removable Media (T1091) |
| Severity             | Medium                                                                                                             |

### Description

An autorun file installed at the root of a C:\ drive is suspicious, as autorun files are typically associated with removable drives.

### Attacker's Goals

The Autorun and AutoPlay components of Microsoft Windows operating systems may use 'Autorun.inf' to automatically execute a program (without user interaction). Adversaries can manipulate this mechanism to run a malicious program.

### Investigative actions

Read the content of the 'Autorun.inf' file from the root directory folder of the drive (the file may be hidden).


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