Analysis of nvhda64v.sys: clean verdict, risk score 23/100. 0 YARA matches, 0/76 multi-engine detections. SHA256 263c77efd21bdf36. Kernel imports, IOCTL codes, MITRE ATT&CK, and code-signing details.
DriverShield analyzed the Windows kernel driver nvhda64v.sys and assigned a verdict of Clean with a composite risk score of 23/100, indicating no notable risk signals (0-29 band).
| Verdict | Clean (23/100) |
| YARA matches | 0 |
| Multi-engine detections | 0 / 76 |
| File size | 134848 bytes |
| Code-signing signer | DigiCert Trusted G4 Code Signing RSA4096 SHA384 2021 CA1 |
| Analyzed | 2026-03-23 |
| SHA256 | 263c77efd21bdf367f1f8bb85ddea460b4eb23dd73182b1ef83c85f5c42ff81d |
| SHA1 | bc870e4dc822dd7065a7aa3981bee3a4426d9c90 |
| MD5 | d9b98dc2c251c42ea35d243b4b0ce1b2 |
Version resource data embedded in the nvhda64v.sys PE header, as extracted by the analysis engine.
| File description | NVIDIA HDMI Audio Driver |
|---|---|
| Product | NVIDIA HDMI Audio Driver |
| Company | NVIDIA Corporation |
| Original filename | nvhda.sys |
| Internal name | nvhda.sys |
| File version | 1.4.2.6 |
| Copyright | (C) NVIDIA 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 | 54 / 100 |
| IOCTL dispatch surface | 100 / 100 |
| Known-vulnerable corpus | 0 / 100 |
| Code-signing state | 0 / 100 |
| Packing and entropy | 0 / 100 |
| Dynamic behaviour | 0 / 100 |
| CVE cross-reference | 0 / 100 |
Kernel-mode APIs resolved from the Import Address Table of nvhda64v.sys, ranked by exploitation relevance.
| API | Risk | Why it matters |
|---|---|---|
| ZwSetValueKey | medium | Moderate risk - system modification capability |
| ObReferenceObjectByHandle | medium | Moderate risk - system modification capability |
| KeBugCheckEx | medium | Moderate risk - system modification capability |
| ZwCreateKey | medium | Moderate risk - system modification capability |
| ZwQueryValueKey | low | Standard kernel API - generally benign |
| RtlInitUnicodeString | low | Standard kernel API - generally benign |
| KeInitializeEvent | low | Standard kernel API - generally benign |
| IofCompleteRequest | low | Standard kernel API - generally benign |
| ExFreePool | low | Standard kernel API - generally benign |
| ZwClose | low | Standard kernel API - generally benign |
| KeWaitForSingleObject | low | Standard kernel API - generally benign |
| ZwOpenKey | low | Standard kernel API - generally benign |
| ExAllocatePoolWithTag | low | Standard kernel API - generally benign |
| KeSetEvent | low | Standard kernel API - generally benign |
| KeDelayExecutionThread | low | Standard kernel API - generally benign |
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 |
|---|---|---|---|
| 0x0080818B | high | METHOD_NEITHER | FILE_DEVICE_CUSTOM Function #98 |
| 0x0080918B | high | METHOD_NEITHER | FILE_DEVICE_CUSTOM Function #1122 |
| 0x987615FF | high | METHOD_NEITHER | CUSTOM_PROCESS Function #1407 |
| 0x008092FF | high | METHOD_NEITHER | FILE_DEVICE_CUSTOM Function #1215 |
| 0x008090FF | high | METHOD_NEITHER | FILE_DEVICE_CUSTOM Function #1087 |
| 0x0080838B | high | METHOD_NEITHER | FILE_DEVICE_CUSTOM Function #226 |
| 0x0080968B | high | METHOD_NEITHER | FILE_DEVICE_CUSTOM Function #1442 |
| 0x008081C7 | high | METHOD_NEITHER | FILE_DEVICE_CUSTOM Function #113 |
| 0x0080868B | high | METHOD_NEITHER | FILE_DEVICE_CUSTOM Function #418 |
| 0x0080878B | high | METHOD_NEITHER | FILE_DEVICE_CUSTOM Function #482 |
| 0x00808F8B | high | METHOD_NEITHER | FILE_DEVICE_CUSTOM Function #994 |
| 0x008083C7 | high | METHOD_NEITHER | FILE_DEVICE_CUSTOM Function #241 |
| 0x002200F0 | medium | METHOD_BUFFERED | FILE_DEVICE_UNKNOWN Function #60 |
| 0x0080BA00 | medium | METHOD_BUFFERED | FILE_DEVICE_CUSTOM Function #3712 |
| 0x00809E89 | medium | METHOD_IN_DIRECT | FILE_DEVICE_CUSTOM Function #1954 |
| 0x00803715 | medium | METHOD_IN_DIRECT | FILE_DEVICE_CUSTOM Function #3525 |
| 0x00340039 | medium | METHOD_IN_DIRECT | FILE_DEVICE_DISK Function #14 |
| 0x00340030 | medium | METHOD_BUFFERED | FILE_DEVICE_DISK Function #12 |
| 0x008001F9 | medium | METHOD_IN_DIRECT | FILE_DEVICE_CUSTOM Function #126 |
| 0x0080808D | medium | METHOD_IN_DIRECT | FILE_DEVICE_CUSTOM Function #35 |
| 0x0080EC81 | medium | METHOD_IN_DIRECT | FILE_DEVICE_CUSTOM Function #2848 |
| 0x00802484 | medium | METHOD_BUFFERED | FILE_DEVICE_CUSTOM Function #2337 |
| 0x0080248C | medium | METHOD_BUFFERED | FILE_DEVICE_CUSTOM Function #2339 |
| 0x00220115 | medium | METHOD_IN_DIRECT | FILE_DEVICE_UNKNOWN Function #69 |
Showing 24 of 39 extracted control codes.
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 | 0x70DE | 0x7200 | 5.97 | CODE, EXEC, READ |
| CODE | 0x2CC0 | 0x2E00 | 6.13 | CODE, EXEC, READ |
| .rdata | 0x2688 | 0x2800 | 4.8 | IDATA, READ |
| .data | 0x02CC | 0x0400 | 1.58 | IDATA, READ, WRITE |
| .pdata | 0x0FA8 | 0x1000 | 4.88 | IDATA, READ |
| PAGE | 0xAB2A | 0xAC00 | 6.09 | CODE, EXEC, READ |
| INIT | 0x06E4 | 0x0800 | 4.76 | CODE, EXEC, READ, DISCARD |
| .rsrc | 0x0388 | 0x0400 | 3.02 | IDATA, READ, DISCARD |
| .reloc | 0x02AC | 0x0400 | 4.32 | IDATA, READ, DISCARD |
| Control Flow Guard | Not enabled |
|---|---|
| ASLR | Enabled |
| DEP | Enabled |
| Integrity check | Enforced |
| Mitigation score | 75 / 100 |
Techniques this driver could enable if loaded by an adversary.
| ID | Technique | Tactic |
|---|---|---|
| T1071 | Application Layer Protocol | Command and Control |
| T1112 | Modify Registry | Defense Evasion |
| T1211 | Exploitation for Defense Evasion | Defense Evasion |
| T1543.003 | Windows Service | Persistence |
| T1547.001 | Registry Run Keys | Persistence |
| T1553.002 | Subvert Trust Controls: Code Signing | Defense Evasion |
| T1569.002 | System Services: Service Execution | Execution |
| T1652 | Device Driver Discovery | Discovery |
| Signer | DigiCert Trusted G4 Code Signing RSA4096 SHA384 2021 CA1 |
|---|---|
| Signer organisation | DigiCert, Inc. |
| Issuer | DigiCert Trusted Root G4 |
| Serial | 8AD40B260D29C4C9F5ECDA9BD93AED9 |
| Valid from | 2021-04-29 00:00 UTC |
| Valid until | 2036-04-28 23:59 UTC |
| Signature validity | Verified |
Engine angr, status completed, 14 paths explored at a maximum depth of 14. Vulnerability classes reached: 0. Exploitable paths: 0.
Based on DriverShield static and dynamic analysis, nvhda64v.sys is assessed as clean, with no notable risk signals. Its composite risk score is 23/100 (verdict: clean). Always validate findings independently before acting.
nvhda64v.sys has a DriverShield composite risk score of 23/100, placing it in the clean verdict band. SHA256: 263c77efd21bdf367f1f8bb85ddea460b4eb23dd73182b1ef83c85f5c42ff81d.
nvhda64v.sys is a Windows kernel-mode driver (.sys) analyzed by DriverShield for vulnerabilities, BYOVD abuse potential, and malware indicators. It is code-signed by DigiCert Trusted G4 Code Signing RSA4096 SHA384 2021 CA1.
Related: Other drivers signed by DigiCert Trusted G4 Code Signing RSA4096 SHA384 2021 CA1 · What an IOCTL dispatch code is · BYOVD research index · full driver database · CVE library · code signing atlas