Inside the 2025 AWS Cryptomining Campaign: How Stolen Credentials Fueled a Cloud Security Crisis

Inside the 2025 AWS Cryptomining Campaign: How Stolen Credentials Fueled a Cloud Security Crisis

Alex Cipher's Profile Pictire Alex Cipher 6 min read

A single set of stolen AWS credentials can unleash a financial and operational nightmare. The 2025 AWS cryptomining campaign is a prime example: attackers sidestepped traditional defenses by using legitimate, compromised IAM credentials to infiltrate cloud environments. Within minutes, they spun up thousands of cloud resources, all dedicated to mining cryptocurrency—leaving victims with eye-watering bills and disrupted operations. What set this campaign apart was not just its scale, but the attackers’ deep understanding of AWS workflows. They used features like termination protection to frustrate incident responders and public container registries to deploy cryptominers at lightning speed. This incident underscores how cloud security is only as strong as its weakest credential, and why robust IAM hygiene is non-negotiable for organizations of every size (BleepingComputer).

Inside the Attack: How Compromised IAM Credentials Fueled a Cloud Cryptomining Spree

Initial Access: Exploiting Stolen IAM Credentials

The 2025 AWS cryptomining campaign was distinguished by its exploitation of legitimate, yet compromised, Identity and Access Management (IAM) credentials. Unlike attacks that leverage software vulnerabilities, the threat actors in this campaign bypassed technical defenses by acquiring and using valid IAM credentials belonging to AWS customers (BleepingComputer). This allowed them to operate within the boundaries of the affected organizations’ cloud environments, evading many traditional detection mechanisms.

The attackers’ initial access phase involved reconnaissance activities to enumerate permissions and service quotas within the compromised AWS accounts. Within just 10 minutes of gaining access, the adversaries began deploying resources for cryptomining, demonstrating both the speed and automation underpinning the operation. The rapid transition from access to exploitation underscores the criticality of IAM credential security and the dangers posed by credential reuse or inadequate credential hygiene.

Orchestration of Large-Scale Resource Deployment

Once inside, the attackers systematically provisioned AWS resources at scale to maximize their cryptomining output. On Amazon EC2, they created two launch templates embedded with startup scripts that automatically initiated cryptomining processes. These templates were then used to configure 14 auto-scaling groups, each set to maintain a minimum of 20 instances and capable of scaling up to a staggering 999 instances per group (BleepingComputer). This approach enabled the attackers to rapidly expand their computational footprint, consuming vast amounts of cloud resources and incurring significant costs for the victims.

In parallel, the attackers exploited Amazon Elastic Container Service (ECS) by registering a malicious task definition that pointed to a Docker Hub image named yenik65958/secret. This image, created on October 29, 2025, contained the SBRMiner-MULTI cryptominer and an automated startup script. Each ECS Fargate task was provisioned with 16,384 CPU units and 32GB of memory, and the desired count for these tasks was set to 10, further amplifying the scale of the operation.

Persistence and Evasion: Disabling API Termination

A notable innovation in this campaign was the use of AWS’s ModifyInstanceAttribute API to disable API-based termination of EC2 instances. By enabling the “termination protection” setting across all newly launched EC2 instances, the attackers ensured that incident responders could not simply terminate compromised instances remotely. Instead, defenders were forced to first re-enable API termination before shutting down the affected machines, introducing delays and complicating automated remediation efforts (BleepingComputer). This tactic exemplifies the attackers’ understanding of AWS operational workflows and their intent to maximize cryptomining uptime.

The persistence mechanism not only extended the duration of the cryptomining operation but also increased the operational burden on security teams, who had to manually intervene to regain control over the hijacked resources. This approach highlights the evolving sophistication of cloud-focused threat actors and their ability to weaponize legitimate cloud management features for malicious ends.

Leveraging Public Container Registries for Payload Delivery

Central to the campaign’s success was the use of a public Docker Hub image as the delivery vehicle for the cryptominer. The image in question, yenik65958/secret, was created at the end of October 2025 and had accumulated over 100,000 pulls by the time it was identified and removed (BleepingComputer). By hosting the cryptominer within a public container registry, the attackers bypassed the need for direct file uploads or custom AMIs, instead leveraging standard DevOps workflows to deploy their payload.

This technique also enabled rapid redeployment and scalability, as the malicious image could be referenced in ECS task definitions or EC2 user data scripts. After its discovery, Amazon worked with Docker Hub to remove the image, but warned that similar images could be uploaded under different names or publisher accounts, underscoring the persistent risk posed by public container registries in cloud environments.

Financial and Operational Impact on Victims

The cryptomining campaign had immediate and significant financial repercussions for affected AWS customers. By hijacking cloud resources for unauthorized cryptomining, the attackers shifted the cost of computation, storage, and network bandwidth onto the victims. This not only resulted in inflated cloud bills but also risked exhausting service quotas and impacting legitimate business operations.

Amazon’s response included notifying impacted customers and urging them to rotate compromised IAM credentials. The company emphasized that the attackers’ success was not due to a vulnerability in AWS infrastructure, but rather the misuse of valid credentials, highlighting the shared responsibility model in cloud security (BleepingComputer). The incident serves as a stark reminder of the critical importance of robust IAM practices, including regular credential rotation, least privilege access, and continuous monitoring for anomalous activity.

The operational impact extended beyond financial losses. The attackers’ use of termination protection disrupted automated remediation controls and delayed incident response, increasing the dwell time of the malicious activity. This, in turn, amplified the cost and complexity of recovery, as security teams were forced to manually intervene to restore normal operations.

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Final Thoughts

The 2025 AWS cryptomining campaign is a wake-up call for anyone relying on cloud infrastructure. Attackers no longer need to exploit software bugs—they can wreak havoc simply by getting their hands on valid credentials. The use of auto-scaling, container orchestration, and even AWS’s own security features against defenders shows just how sophisticated and adaptive these threat actors have become. For organizations, the lesson is clear: prioritize IAM security, monitor for unusual activity, and treat every credential as a potential attack vector. As cloud environments grow more complex, so too do the tactics of those looking to exploit them (BleepingComputer).

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