> 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/uncommon-dll-sideloading-from-a-logical-cd-rom-iso-device.md).

# Uncommon DLL-sideloading from a logical CD-ROM (ISO) device

### 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        | DLL Hijacking Analytics                                                            |
| ATT\&CK Tactic       | Execution (TA0002), Defense Evasion (TA0005), Privilege Escalation (TA0004)        |
| ATT\&CK Technique    | Hijack Execution Flow: DLL (T1574.001), User Execution: Malicious File (T1204.002) |
| Severity             | Medium                                                                             |

### Description

A DLL was loaded by an executable from the same folder on a logical CD-ROM device (ISO).

### Attacker's Goals

An attacker is attempting to load untrusted code into trusted contexts to avoid detection or escalate privileges.

### Investigative actions

* Investigate the loaded module and verify if it is malicious.
* Check if the disk is a mounted CD-ROM (for example from an ISO file), and if it contains hidden files and folders.
* Check the content of an 'autorun.inf' or '\*.lnk' files if they exist.


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