Managed Sentinel – Alert 046

Alert IDMS-A046
Alert NameHigh Value Servers communicating with Known Malicious IP/Domains (Threat Intelligence)
DescriptionThis alert triggers when an internal critical machine successfully connect to a malicious IP address or domain based on Managed Sentinel Threat Intelligence list.

Customer to provide a list of critical servers.
Severity LevelMedium
Threat IndicatorCompromised Host
MITRE ATT&CK TacticsExecution
Command and Control
Exfiltration
Log sourcesFirewalls
False PositiveBrowsers Adware
Incorrect Threat Intelligence feed
RecommendationsInvestigate the type of traffic allowed to the malicious IP address (e.g web, dns, smtp). Manually perform a validation of the malicious IP address on external Threat Intelligence sources (e.g www.abuseIPdb.com).
Also the volume of requests within a specific period of time could be an solid indicator of a compromised host.