### Overview
The spear phishing campaign executed by the Carbanak/FIN7 group was highly targeted, focusing on banking personnel with access to critical systems. The phishing emails were crafted to appear as legitimate internal communications, increasing the probability of successful compromise.

### Key Indicators
- **Email Subject:** 'Urgent Security Update Required'
- **Sender Domain:** spoofed from `security-update@bankinginternal.com`
- **Attachment:** Malicious XLS file named `Security_Update.xls`

### Next Steps
The next phase involves deploying malware to harvest credentials. It is critical to monitor for anomalies in user behavior and system access patterns to mitigate further compromise.