Analysis of usbuhci.sys: clean verdict, risk score 8/100. 0 YARA matches. SHA256 914f7c4cb7d919d7. Kernel imports, IOCTL codes, MITRE ATT&CK, and code-signing details.
DriverShield analyzed the Windows kernel driver usbuhci.sys and assigned a verdict of Clean with a composite risk score of 8/100, indicating no notable risk signals (0-29 band).
| Verdict | Clean (8/100) |
| YARA matches | 0 |
| File size | 39424 bytes |
| Analyzed | 2026-03-22 |
| SHA256 | 914f7c4cb7d919d73e4889a4800cc226134d9c374d6004163e2985de08b8145b |
| SHA1 | bea24d1aea7b762eddf447af42f5163e94edd0a6 |
| MD5 | 37ed969961bf2cfaf470c91f1422a1f0 |
Version resource data embedded in the usbuhci.sys PE header, as extracted by the analysis engine.
| File description | UHCI USB Miniport Driver |
|---|---|
| Product | Microsoft® Windows® Operating System |
| Company | Microsoft Corporation |
| Original filename | USBUHCI.sys |
| Internal name | USBUHCI.sys |
| File version | 10.0.19041.4474 (WinBuild.160101.0800) |
| Copyright | © Microsoft Corporation. All rights reserved. |
Each component is scored 0-100 and then weighted into the composite. See the analysis methodology for the exact formula.
| Component | Sub-score |
|---|---|
| Multi-engine consensus | 0 / 100 |
| YARA signature matches | 0 / 100 |
| Dangerous kernel imports | 0 / 100 |
| IOCTL dispatch surface | 42 / 100 |
| Known-vulnerable corpus | 0 / 100 |
| Code-signing state | 50 / 100 |
| Packing and entropy | 0 / 100 |
| Dynamic behaviour | 0 / 100 |
| CVE cross-reference | 0 / 100 |
Control codes reachable through the driver dispatch routine. Codes tied to published exploit code are flagged, since they are the primary Bring Your Own Vulnerable Driver (BYOVD) entry points.
| Code | Severity | Transfer | Description |
|---|---|---|---|
| 0x00808E2B | high | METHOD_NEITHER | FILE_DEVICE_CUSTOM Function #906 |
| 0x00808FFF | high | METHOD_NEITHER | FILE_DEVICE_CUSTOM Function #1023 |
| 0x00808A2B | high | METHOD_NEITHER | FILE_DEVICE_CUSTOM Function #650 |
| 0x002200F0 | medium | METHOD_BUFFERED | FILE_DEVICE_UNKNOWN Function #60 |
| 0x008024BC | medium | METHOD_BUFFERED | FILE_DEVICE_CUSTOM Function #2351 |
| 0x00804315 | medium | METHOD_IN_DIRECT | FILE_DEVICE_CUSTOM Function #197 |
| 0x008024B4 | medium | METHOD_BUFFERED | FILE_DEVICE_CUSTOM Function #2349 |
| 0x0034B715 | medium | METHOD_IN_DIRECT | FILE_DEVICE_DISK Function #3525 |
| 0x008024AC | medium | METHOD_BUFFERED | FILE_DEVICE_CUSTOM Function #2347 |
| 0x0034B305 | medium | METHOD_IN_DIRECT | FILE_DEVICE_DISK Function #3265 |
| 0x0080248C | medium | METHOD_BUFFERED | FILE_DEVICE_CUSTOM Function #2339 |
| 0x00229F05 | medium | METHOD_IN_DIRECT | FILE_DEVICE_UNKNOWN Function #1985 |
| 0x0034039C | medium | METHOD_BUFFERED | FILE_DEVICE_DISK Function #231 |
| 0x0034002E | medium | METHOD_OUT_DIRECT | FILE_DEVICE_DISK Function #11 |
Section layout and Shannon entropy. High entropy in a code section is a packing or encryption indicator.
| Section | Virtual size | Raw size | Entropy | Flags |
|---|---|---|---|---|
| .text | 0x6FC2 | 0x7000 | 6.28 | CODE, EXEC, READ |
| .rdata | 0x0D58 | 0x0E00 | 4.67 | IDATA, READ |
| .data | 0x04A0 | 0x0200 | 0.28 | IDATA, READ, WRITE |
| .pdata | 0x072C | 0x0800 | 4.12 | IDATA, READ |
| .idata | 0x012E | 0x0200 | 2.24 | IDATA, READ |
| INIT | 0x0072 | 0x0200 | 1.67 | CODE, EXEC, READ, DISCARD |
| GFIDS | 0x00E4 | 0x0200 | 1.9 | IDATA, READ, DISCARD |
| .rsrc | 0x0400 | 0x0400 | 3.41 | IDATA, READ, DISCARD |
| .reloc | 0x0240 | 0x0400 | 3.78 | IDATA, READ, DISCARD |
| Control Flow Guard | Enabled |
|---|---|
| ASLR | Enabled |
| DEP | Enabled |
| Integrity check | Not enforced |
| Mitigation score | 80 / 100 |
Techniques this driver could enable if loaded by an adversary.
| ID | Technique | Tactic |
|---|---|---|
| T1543.003 | Windows Service | Persistence |
| T1553.006 | Code Signing Policy Modification | Defense Evasion |
| T1652 | Device Driver Discovery | Discovery |
Engine angr, status no_findings, 0 paths explored at a maximum depth of 0. Vulnerability classes reached: 0. Exploitable paths: 0.
Based on DriverShield static and dynamic analysis, usbuhci.sys is assessed as clean, with no notable risk signals. Its composite risk score is 8/100 (verdict: clean). Always validate findings independently before acting.
usbuhci.sys has a DriverShield composite risk score of 8/100, placing it in the clean verdict band. SHA256: 914f7c4cb7d919d73e4889a4800cc226134d9c374d6004163e2985de08b8145b.
usbuhci.sys is a Windows kernel-mode driver (.sys) analyzed by DriverShield for vulnerabilities, BYOVD abuse potential, and malware indicators.
Related: What an IOCTL dispatch code is · BYOVD research index · full driver database · CVE library · code signing atlas