DragonForce Ransomware Exploits Microsoft Teams Relay to Hide Malware, Steal Data and Encrypt Systems
What Happened — DragonForce ransomware leveraged Microsoft Teams relay infrastructure to conceal a custom backdoor, exfiltrate files and subsequently encrypt endpoints at a U.S. services firm.
Why It Matters for Compliance & Audit Readiness
- The incident illustrates a control gap where legitimate collaboration tools are repurposed for malicious C2, a scenario SOC 2 continuous‑compliance programs must detect and evidence.
- Mapping Teams‑related configuration controls to SOC 2 criteria and collecting continuous audit evidence helps prove due diligence and mitigates audit findings.
Who Is Affected — Professional‑services organizations and any enterprise that relies on Microsoft Teams for internal communication.
Recommended Actions
- Review and harden Microsoft Teams relay and app permission settings to align with SOC 2 CC6.1 (System Operations) and CC7.1 (Change Management).
- Deploy continuous monitoring and logging of Teams activity to flag anomalous relay usage.
- Update incident‑response playbooks to include collaboration‑tool abuse scenarios and ensure evidence collection for audit trails.
Technical Notes — The ransomware used Teams as a covert command‑and‑control channel, bypassing traditional network detection. No specific CVE was cited; the abuse stems from default relay configurations that allow external traffic. Source: HackRead