Chinese APT Mustang Panda Caught Using Kernel-Mode Rootkit

SecurityWeek

December 30, 2025 at 10:08 AM

Actively Exploited

Overview

Researchers have identified a new tactic used by the Chinese advanced persistent threat group, Mustang Panda, involving a kernel-mode rootkit. This rootkit utilizes a signed driver file that contains two user-mode shellcodes to deploy the ToneShell backdoor. This method allows the attackers to gain deeper access to the victim's systems, making detection more difficult. Organizations should be aware of this sophisticated technique, as it poses significant risks to data integrity and security. Protecting systems against such advanced threats is crucial for maintaining cybersecurity hygiene.

Key Takeaways

Active Exploitation: This vulnerability is being actively exploited by attackers. Immediate action is recommended.
Affected Systems: Windows operating systems, specifically those vulnerable to kernel-mode attacks
Action Required: Implement security patches for affected Windows systems, monitor for unusual activity, and consider endpoint detection solutions to identify rootkit behavior.
Timeline: Newly disclosed

Original Article Summary

The threat actor uses a signed driver file containing two user-mode shellcodes to execute its ToneShell backdoor. The post Chinese APT Mustang Panda Caught Using Kernel-Mode Rootkit appeared first on SecurityWeek.

Impact

Windows operating systems, specifically those vulnerable to kernel-mode attacks

Exploitation Status

This vulnerability is confirmed to be actively exploited by attackers in real-world attacks. Organizations should prioritize patching or implementing workarounds immediately.

Timeline

Newly disclosed

Remediation

Implement security patches for affected Windows systems, monitor for unusual activity, and consider endpoint detection solutions to identify rootkit behavior.

Additional Information

This threat intelligence is aggregated from trusted cybersecurity sources. For the most up-to-date information, technical details, and official vendor guidance, please refer to the original article linked below.

Related Topics: This incident relates to APT.

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