### Summary
Following the initial access through spear-phishing, threat actors have initiated lateral movement within the network. This has been achieved through credential dumping techniques, indicating a breach of internal security protocols.

### Key Indicators
- **Credential Dumping Tools Detected**: Tools such as Mimikatz and ProcDump have been identified, suggesting attempts to harvest credentials from memory.
- **Compromised Accounts**: Several administrative accounts have shown signs of unauthorized access, potentially increasing the breadth of the attack.

### Recommendations
- **Immediate Password Resets**: Conduct a forced reset of all potentially compromised accounts.
- **Enhanced Monitoring**: Increase logging and monitoring on privileged accounts to detect further unauthorized access attempts.
- **Network Segmentation**: Apply stricter segmentation controls to limit lateral movement capabilities of the threat actors.

### Next Steps
Prepare for potential data exfiltration attempts by monitoring outbound network traffic and securing sensitive data repositories.