### Overview
Following the phishing incident, further investigation has confirmed that the malicious document exploited a known vulnerability in Microsoft Office. This vulnerability allowed remote code execution, providing attackers with the ability to execute arbitrary commands on the compromised system.

### Technical Details
- **CVE Identifier:** CVE-2023-XXXX
- **Vulnerability Type:** Remote Code Execution (RCE)
- **Patch Status:** Unpatched systems are vulnerable

### Recommendations
- Ensure all Office software is updated with the latest security patches.
- Conduct scans to identify other potentially vulnerable systems within the network.

### Next Steps
The focus should now shift to identifying how the attackers maintain persistence and what backdoor mechanisms have been employed.