Suspicious activity

AWS Guard Duty: Ec2 with RDP brute force attempts on an exposed unpatched Windows instance


Brute force attempts were detected by AWS GuardDuty service on the Internet facing Unpatched Windows EC2 instance {AwsEc2Instance} ({AwsEc2Instance.InstanceId}). AWS GuardDuty is a threat detection service that continuously monitors your AWS accounts and workloads for malicious activity. The service detects one of the following types of brute force attempt (Impact:EC2/WinRMBruteForce, UnauthorizedAccess:EC2/RDPBruteForce) on an EC2 instance that Orca has identified as exposed to the Internet and with an OS that hasn't been patched in a long time.