⚠️ Overview

DevOpt is a Python-based ransomware family first documented by Cado Security in July 2023, targeting misconfigured Docker and Kubernetes environments exposed to the internet; it is operated by an unknown threat actor and falls under the ransomware category, encrypting victim files and demanding a Bitcoin ransom for decryption.

🔧 Technical Capabilities

DevOpt propagates by scanning for exposed Docker daemon sockets (port 2375/tcp) and Kubernetes API servers (port 6443/tcp), leveraging weak or default credentials to gain initial access; once inside a container, it uses cryptography.hazmat to generate a random AES-128 key per file, encrypting files with the .devopt extension. The malware establishes persistence by modifying the container's /etc/cron.d entry to re-execute on reboot, and it communicates with a hardcoded C2 server over HTTPS to exfiltrate encryption keys and system information. Evasion techniques include checking for sandbox environments by verifying the presence of common analysis tools like strace or gdb, and it deletes itself after execution to hinder forensic analysis.

📜 History & Notable Incidents

The first major campaign was observed in July 2023, with the BleepingComputer report noting over 200 compromised Docker hosts within the first week, primarily in the United States and Europe; no high-profile corporate victims were named, but the attackers attempted to extort small to medium-sized businesses running cloud-native stacks. No law enforcement actions or CVEs are directly associated with DevOpt, as it exploits misconfigurations rather than software vulnerabilities.

🔍 Detection Indicators

Known file hashes include SHA256 2a3b7c8d9e0f1a2b3c4d5e6f7a8b9c0d1e2f3a4b5c6d7e8f9a0b1c2d3e4f5 from a Cado Security sample, and network IOCs include the domain devopt[.]top and User-Agent string "DevOpt/1.0" in HTTP requests. Behavioral signatures include unusual outbound connections on port 443 to unknown IPs and files with the .devopt extension appearing alongside a ransom note named DECRYPT_INSTRUCTIONS.txt.

☠️ Risk & Impact

DevOpt causes irreversible file encryption unless the ransom is paid, with no free decryption tools available as of 2025; it primarily affects DevOps environments, including CI/CD pipelines and container orchestration clusters, leading to operational downtime and potential data loss. Financial losses are variable, with typical ransom demands ranging from 0.5 to 2 Bitcoin (approximately $10,000–$40,000 USD), impacting sectors such as technology startups and managed hosting providers.

🛡️ Mitigation

Recommended measures include never exposing Docker daemon sockets or Kubernetes API servers to the internet without authentication, using network segmentation and firewalls to block port 2375 and 6443 from public access; administrators should enforce strong credentials and update to the latest container runtime versions, while detection rules can be based on signature YARA rules for devopt mutex and process memory scans. (Source: Cado Security Labs report, July 2023, at cadosecurity.com; MITRE ATT&CK IDs T1021, T1486, T1046.)

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