Summary:
Browser isolation is a security measure that separates web browsing activities from local devices to protect against cyber threats. Mandiant reveals a new method attackers can use to bypass browser isolation by utilizing QR codes for command-and-control (C2) communications, demonstrating the vulnerabilities in this security technology. Organizations are advised to adopt a comprehensive defense strategy beyond relying solely on browser isolation.
#BrowserIsolation #CyberDefense #CommandAndControl
Browser isolation is a security measure that separates web browsing activities from local devices to protect against cyber threats. Mandiant reveals a new method attackers can use to bypass browser isolation by utilizing QR codes for command-and-control (C2) communications, demonstrating the vulnerabilities in this security technology. Organizations are advised to adopt a comprehensive defense strategy beyond relying solely on browser isolation.
#BrowserIsolation #CyberDefense #CommandAndControl
Keypoints:
Browser isolation protects users by sandboxing web browsers in secure environments.
Three types of browser isolation exist: Remote, On-Premises, and Local.
Mandiant demonstrates a method to circumvent browser isolation using QR codes for C2 communications.
Attackers can send commands to compromised systems by embedding data in QR codes displayed on web pages.
The technique works across all types of browser isolation environments.
Challenges include latency and limitations on data size for QR codes.
Organizations should monitor network traffic and browser automation to detect potential threats.
MITRE Techniques:
Command and Control (T1071): Utilizes QR codes displayed on web pages to send commands from an attacker-controlled server to a compromised device.
Exfiltration Over Command and Control Channel (T1041): Transfers command output encoded in URL parameters back to the C2 server.
IoC:
[domain] attacker-controlled-server.com
[url] example.com/qr-code-page
[file name] malicious-implant.exe
[tool name] Puppeteer
[tool name] Cobalt Strike
Full Research: https://cloud.google.com/blog/topics/threat-intelligence/c2-browser-isolation-environments/