Silk Typhoon

Silk Typhoon, also known as Hafnium, is a state-sponsored threat actor originating from China. The group first came to prominence in March 2021 when it was linked to the exploitation of Microsoft Exchange Server vulnerabilities. This group has been particularly noted for its use of Exchange PowerShell snap-ins to export mailbox data, a technique that allows them to exfiltrate sensitive information undetected. The group's methods have evolved over time, with variations of their initial techniques observed in subsequent attacks. A key variation includes the use of Tarrask malware on Windows devices. This malware is designed to mask their malicious activities on infected endpoints and establish persistence, thereby allowing them to maintain access to compromised systems over extended periods. Given the sophistication of Silk Typhoon's techniques and its state sponsorship, it represents a significant cyber threat. Its ability to exploit zero-day flaws and adapt its methods indicates a high level of technical skill and strategic planning. As such, organizations are advised to remain vigilant and ensure that they implement robust security measures to protect against potential attacks from this group.