Managed Sentinel – Alert 241
| Alert ID | MS-A241 |
| Alert Name | VPN connections from IP addresses matching Firegen Threat Intelligence feed |
| Description | This alert will trigger when a successful VPN connection is established from an external IP address listed on Firegen Threat Intelligence feed, regardless of the Risk score associated. |
| Severity Level | Medium |
| Threat Indicator | Compromised Host |
| MITRE ATT&CK Tactics | Initial Access |
| Log sources | VPN |
| False Positive | Browsers Adware Incorrect Threat Intelligence feed |
| Recommendations | 1. Investigate the type of traffic allowed to the malicious IP address (e.g web, dns, smtp). 2. Manually perform a validation of the malicious IP address on external Threat Intell sources (e.g www.abuseIPdb.com). 3. Identify the number of requests within a specific period of time which could be an solid indicator of a compromised host. 4. Perform a AV/AM scan for the affected machine connecting via VPN (applicable to Corporate assets) 5. If required deactivate the VPN account(s) 6. Complete a Sentinel investigation for the same entity (IP address or user account) to understand if any other lateral attacks were completed while connecting to VPN to corporate network |