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Integrate the outlined detection techniques into their SIEM and SOAR platforms to help with threat hunting.

Remove the SSM Agent binary from the allow list of their AV and EDR solutions, so that they can be examined and the behavior of processes analyzed for anomalous/suspicious behavior.

The researchers advise enterprise sysadmins to:

They include: keeping an eye out for new instance IDs, the use of specific commands, lost connections to SSM agents in the AWS account, new processes, and suspicious actions related to Sessions Manager in Amazon CloudTrail logs. Luckily, there are ways to detect the use of this technique. The fact that the SSM Agent is preinstalled on some popular Amazon Machine Images and is thus already installed and running on many existing EC2 instances widens the pool of potential targets for adversaries, the researchers pointed out. The C&C communications appear legitimate, there’s no need to develop a separate attack infrastructure, and the SSM Agent can be used to manipulate the endpoint via supported features. Turning the SSM Agent into a remote access trojan enables attackers to compromise endpoints without getting spotted by installed security solutions. “The malicious agent process communicates with the attacker’s AWS account, leaving the original SSM Agent to continue communicating with the original AWS account.”Īnd if the threat actor prefers not to use an AWS account to manage the agents, they don’t have to: there’s an SSM feature that can be abused to route the SSM traffic to an attacker-controlled server (i.e., not through AWS’s servers). In the second scenario, the attacker runs another SSM Agent process by using Linux namespaces or setting specific environment variables on Windows. Then, the SSM Agent will communicate and execute commands from attacker the owned AWS account,” they explained. “, the attack is ‘hijacking’ the original SSM Agent process by registering the SSM Agent to work in ‘hybrid’ mode with a different AWS account, enforcing it to not choose the metadata server for identity consumption.

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In the first scenario, the threat actor requires root access on targeted Linux machine or administrator privileges on the targeted Windows system, while in the second they must be able run as at least non-root privileged user on the targeted Linux machine or as administrator on the targeted Windows system.

The researchers have tried out two different scenarios, and the level access required for both is high. “After controlling the SSM Agent, the attackers can carry out malicious activities, such as data theft, encrypting the filesystem (as a ransomware), misusing endpoint resources for cryptocurrency mining and attempting to propagate to other endpoints withing the network – all under the guise of using a legitimate software, the SSM Agent,” Mitiga researchers Ariel Szarf and Or Aspir explained.

#How to use ashampoo burning studio 18 software

The presence of the SSM Agent, a software component that enterprise sysadmins use to manage the endpoints from the AWS account using the AWS System Manager service.

Attackers gaining initial access to the machine (e.g., by exploiting an unpatched vulnerability on a public-facing instance/server), and.

The success of this “ living off the land” technique hinges on: Mitiga researchers have documented a new post-exploitation technique attackers can use to gain persistent remote access to AWS Elastic Compute Cloud (EC2) instances (virtual servers), as well as to non-EC2 machines (e.g., on-premises enterprise servers and virtual machines, and VMs in other cloud environments).