Browse Rules

AWS EC2 LOLBin Execution via SSM SendCommand

Identifies the execution of Living Off the Land Binaries (LOLBins) or GTFOBins on EC2 instances via AWS Systems Manager (SSM) `SendCommand` API. This detection correlates AWS CloudTrail `SendCommand` events with endpoint process execution by matching SSM command IDs. While AWS redacts command parameters in CloudTrail logs, this correlation technique reveals the actual commands executed on EC2 instances. Adversaries may abuse SSM to execute malicious commands remotely without requiring SSH or RDP

AWS SSM Command Document Created by Rare User

Identifies when an AWS Systems Manager (SSM) command document is created by a user or role who does not typically perform this action. Adversaries may create SSM command documents to execute commands on managed instances, potentially leading to unauthorized access, command and control, data exfiltration and more.

AWS SSM Session Started to EC2 Instance

Identifies the first occurrence of an AWS user or role establishing a session via SSM to an EC2 instance. Adversaries may use AWS Session Manager to establish a session to an EC2 instance to execute commands on the instance. This can be used to gain access to the instance and perform actions such as privilege escalation.

AWS SSM `SendCommand` Execution by Rare User

Detects the execution of commands or scripts on EC2 instances using AWS Systems Manager (SSM), such as RunShellScript, RunPowerShellScript or custom documents. While legitimate users may employ these commands for management tasks, they can also be exploited by attackers with credentials to establish persistence, install malware, or execute reverse shells for further access to compromised instances. This is a New Terms rule that looks for the first instance of this behavior by a user or role.

AWS SSM `SendCommand` with Run Shell Command Parameters

Identifies the use of the AWS Systems Manager (SSM) `SendCommand` API with the either `AWS-RunShellScript` or `AWS-RunPowerShellScript` parameters. The `SendCommand` API call allows users to execute commands on EC2 instances using the SSM service. Adversaries may use this technique to execute commands on EC2 instances without the need for SSH or RDP access. This behavior may indicate an adversary attempting to execute commands on an EC2 instance for malicious purposes. This is a [New Terms](http

AWS SSM Session Manager Child Process Execution

Identifies process start events where the parent process is the AWS Systems Manager (SSM) Session Manager worker. Session Manager provides interactive shell access to EC2 instances and hybrid nodes without bastion hosts or open inbound ports. Adversaries abuse it for remote execution and lateral movement using legitimate AWS credentials and IAM permissions. This rule surfaces endpoint execution occurring under that worker for visibility and hunting. Expect noise from authorized administrative s

AWS SSM Inventory Reconnaissance by Rare User

Detects the rare occurrence of a user or role accessing AWS Systems Manager (SSM) inventory APIs or running the AWS-GatherSoftwareInventory job. These APIs reveal detailed information about managed EC2 instances including installed software, patch compliance status, and command execution history. Adversaries may use these calls to collect software inventory while blending in with legitimate AWS operations. This is a New Terms rule that detects when a user accesses these reconnaissance APIs fo

AWS Systems Manager SecureString Parameter Request with Decryption Flag

Detects the first occurrence of a user identity accessing AWS Systems Manager (SSM) SecureString parameters using the GetParameter or GetParameters API actions with credentials in the request parameters. This could indicate that the user is accessing sensitive information. This rule detects when a user accesses a SecureString parameter with the withDecryption parameter set to true. This is a New Terms rule that detects the first occurrence of an AWS identity accessing SecureString parameters wit