### Overview
The attackers moved laterally across TNT Express's legacy systems, utilizing the established backdoors.

### Details
- **Targeted Systems**: Focus was on those running outdated operating systems with known vulnerabilities.
- **Technique**: Utilized stolen credentials to escalate privileges and move within the network.

### Next Steps
Prepare for potential data exfiltration and destruction. Implement tighter access controls and monitor for signs of data manipulation or theft.