Managed Sentinel – Alert 104
| Alert ID | MS-A104 |
| Alert Name | Anomalous allow connections from internal hosts |
| Description | This alert identifies internal hosts with an unusual amount of outbound allowed connections. This may indicate a data exfiltration or an otherwise compromised host |
| Severity Level | Low |
| Threat Indicator | Compromised Host |
| MITRE ATT&CK Tactics | Discovery |
| Log sources | Firewall Traffic Logs |
| False Positives | Asset Inventory Application scanners Vulnerability scans (if organization is not blocking outbound traffic in perimeter firewall) |
| Recommendations | 1. Review configuration of the internal machine(s) that is/are generating this traffic. 2. Run a EDR scan on the internal host 3. If applicable, quarantine or disconnect the machine from the internal network 4. Review perimeter firewall logs for indicators of large data transferred from internal machine to internet destinations (data leakage) |