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Cracking ValleyRAT: From Builder Secrets to Kernel Rootkits
Check Point Research conducted a thorough technical analysis of the ValleyRAT malware, also referred to as Winos or Winos4.0. The research primarily focuses on ValleyRAT's sophisticated modular architecture and plugin system, revealing significant insights into its potentially broad deployment following the public release of its builder. This malware notably includes a kernel-mode rootkit within its “Driver Plugin,” which retains valid signatures that allow it to operate on updated Windows 11 systems, thereby circumventing native security features.
MITRE ATT&CK & Malware Families
Indicators of Compromise (3 / 124 total)
| TYPE | INDICATOR | DESCRIPTION | CREATED | |
|---|---|---|---|---|
| URL | https://lief.re/ | — | 2025-12-11 | |
| URL | https://www.angusj.com/resourcehacker/ | — | 2025-12-11 | |
| URL | https://www.sun-rat.com/ | — | 2025-12-11 |