RtsUer.sys
The Realtek SD card reader driver, RtsUer.sys, versions below or equal to 10.0.22000.31273 contain multiple vulnerabilities that pose significant security risks. These flaws allow non-privileged users to write to kernel memory and access the DMA controller from unprivileged accounts, potentially enabling privilege escalation and system compromise. The most severe issues include the ability to write to kernel memory and access the DMA controller, which could lead to unauthorized system modifications. These vulnerabilities affect various Realtek SD card reader models used by major OEM laptop manufacturers. Due to the widespread use of this driver, the impact is considerable, potentially affecting a large number of systems across different brands. Users with laptops equipped with Realtek SD card readers should ensure their drivers are updated to a version higher than 10.0.22000.31273 to mitigate these security risks.
Known samples 1
1 recorded TRUE · 0 recorded FALSE · 0 unknown for loading despite HVCI. Results apply to individual samples.
RtsUer.sysSample 1 · HVCI TRUE
- MD5
11966f98a92e039f1d14689538cccd99- SHA1
9ae0c6d1612a84e664c9896fafcc50232831f630- SHA256
39171fcaff172d6b38762acef3d3352f9a375e3db7e54a7b51261a53b3c94266- Imphash
8a0175a5dcdc5c7e8ff577e9ac4e4ab1- Authentihash MD5
63485bea17db891ce3c16c2b24e947b5- Authentihash SHA1
f4f5efe24ab8119e1fe4a9d62c0f153b1fb6d42c- Authentihash SHA256
0f78dd64abcb5a3e1d60f9e9c92422f34a52e009770e6434d2d8aabb6d370737- Machine
- AMD64
- Version
- 10.0.22000.31272
- Publisher
- Realsil Semiconductor Corporation
Recorded command
sc.exe create RtsUer.sys binPath=C:\windows\temp\RtsUer.sys type=kernel && sc.exe start RtsUer.sysElevate privileges · Privileges: kernel · OS: Windows 10

