SilverFox Targets Japanese Manufacturer with 3-Driver BYOVD Chain and ValleyRAT
Summary
The Chinese cybercrime group Silver Fox is targeting a Japanese industrial manufacturer using a new bring your own vulnerable driver (BYOVD) technique. This method is employed to deliver the ValleyRAT malware, enabling persistent remote access.
IFF Assessment
FOE
The use of BYOVD attacks and sophisticated malware like ValleyRAT by a persistent threat actor represents a significant threat to organizations.
Defender Context
Defenders should be aware of the evolving tactics used by threat actors like Silver Fox, particularly the abuse of legitimate drivers for malicious purposes. Implementing robust endpoint detection and response (EDR) solutions and staying vigilant against novel attack vectors are crucial.