Analysis of kdnic_legacy.sys: clean verdict, risk score 15/100. 0 YARA matches, 0/75 multi-engine detections. SHA256 76e0ecd9d0b6acab. Kernel imports, IOCTL codes, MITRE ATT&CK, and code-signing details.
DriverShield analyzed the Windows kernel driver kdnic_legacy.sys and assigned a verdict of Clean with a composite risk score of 15/100, indicating no notable risk signals (0-29 band).
| Verdict | Clean (15/100) |
| YARA matches | 0 |
| Multi-engine detections | 0 / 75 |
| File size | 70976 bytes |
| Code-signing signer | Microsoft Windows |
| Analyzed | 2026-10-11 |
| SHA256 | 76e0ecd9d0b6acab034a33c33a5f2fae93bbaa55244719fb80bcf581281e0493 |
| SHA1 | 1c8e3a37aeb14d4ea993b93120db2a99cb7ceccd |
| MD5 | 1d7c98174d6d8b581fa29c5fd0b5e63a |
Version resource data embedded in the kdnic_legacy.sys PE header, as extracted by the analysis engine.
| File description | Microsoft Kernel Debugger Network Miniport |
|---|---|
| Product | Microsoft Kernel Debugger Network Adapter (NDIS 6.20 Miniport) |
| Company | Microsoft Corporation |
| Original filename | kdnic_legacy.sys |
| Internal name | kdnic_legacy.sys |
| File version | 6.01.00.0000 (WinBuild.160101.0800) |
| Copyright | Copyright (C) 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 | 39 / 100 |
| IOCTL dispatch surface | 30 / 100 |
| Known-vulnerable corpus | 0 / 100 |
| Code-signing state | 80 / 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 kdnic_legacy.sys, ranked by exploitation relevance.
| API | Risk | Why it matters |
|---|---|---|
| MmGetSystemRoutineAddress | high | Potentially dangerous - could be used for privilege escalation or security bypass |
| RtlInitUnicodeString | low | Standard kernel API - generally benign |
| IoDeleteDevice | low | Standard kernel API - generally benign |
| IoCreateDevice | 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 |
|---|---|---|---|
| 0x0080000F | high | METHOD_NEITHER | FILE_DEVICE_CUSTOM Function #3 |
| 0x00227417 | high | METHOD_NEITHER | FILE_DEVICE_UNKNOWN Function #3333 |
| 0x008085C7 | high | METHOD_NEITHER | FILE_DEVICE_CUSTOM Function #369 |
| 0x00808D8B | high | METHOD_NEITHER | FILE_DEVICE_CUSTOM Function #866 |
| 0x002200F0 | medium | METHOD_BUFFERED | FILE_DEVICE_UNKNOWN Function #60 |
| 0x00808389 | medium | METHOD_IN_DIRECT | FILE_DEVICE_CUSTOM Function #226 |
| 0x00228348 | medium | METHOD_BUFFERED | FILE_DEVICE_UNKNOWN Function #210 |
| 0x00808F8D | medium | METHOD_IN_DIRECT | FILE_DEVICE_CUSTOM Function #995 |
| 0x0080958D | medium | METHOD_IN_DIRECT | FILE_DEVICE_CUSTOM Function #1379 |
| 0x00340418 | medium | METHOD_BUFFERED | FILE_DEVICE_DISK Function #262 |
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 | 0x2377 | 0x3000 | 4.92 | CODE, EXEC, READ |
| fothk | 0x1000 | 0x1000 | 0.03 | CODE, EXEC, READ |
| .rdata | 0x0874 | 0x1000 | 2.65 | IDATA, READ |
| .data | 0x0300 | 0x1000 | 0.38 | IDATA, READ, WRITE |
| .pdata | 0x0324 | 0x1000 | 1.05 | IDATA, READ |
| .idata | 0x0A3E | 0x1000 | 3.32 | IDATA, READ |
| PAGE | 0x0FFF | 0x1000 | 6 | CODE, EXEC, READ |
| .edata | 0x0058 | 0x1000 | 0.17 | IDATA, READ |
| INIT | 0x0499 | 0x1000 | 2.35 | CODE, EXEC, READ, DISCARD |
| GFIDS | 0x0098 | 0x1000 | 0.17 | IDATA, READ, DISCARD |
| .rsrc | 0x0478 | 0x1000 | 1.19 | IDATA, READ, DISCARD |
| .reloc | 0x0354 | 0x1000 | 1.3 | IDATA, READ, DISCARD |
| Control Flow Guard | Enabled |
|---|---|
| ASLR | Enabled |
| DEP | Enabled |
| Integrity check | Not enforced |
| Mitigation score | 85 / 100 |
Techniques this driver could enable if loaded by an adversary.
| ID | Technique | Tactic |
|---|---|---|
| T1071 | Application Layer Protocol | Command and Control |
| T1211 | Exploitation for Defense Evasion | Defense Evasion |
| T1543.003 | Windows Service | Persistence |
| T1553.002 | Subvert Trust Controls: Code Signing | Defense Evasion |
| T1569.002 | System Services: Service Execution | Execution |
| T1652 | Device Driver Discovery | Discovery |
| Signer | Microsoft Windows |
|---|---|
| Signer organisation | Microsoft Corporation |
| Issuer | Microsoft Windows Production PCA 2011 |
| Serial | 330000045FF3C96C1A7FF7DA1D00000000045F |
| Valid from | 2023-11-16 19:20 UTC |
| Valid until | 2024-11-14 19:20 UTC (expired) |
| Signature validity | Not verified |
Engine angr, status completed, 21 paths explored at a maximum depth of 21. Vulnerability classes reached: 0. Exploitable paths: 1.
Based on DriverShield static and dynamic analysis, kdnic_legacy.sys is assessed as clean, with no notable risk signals. Its composite risk score is 15/100 (verdict: clean). Always validate findings independently before acting.
kdnic_legacy.sys has a DriverShield composite risk score of 15/100, placing it in the clean verdict band. SHA256: 76e0ecd9d0b6acab034a33c33a5f2fae93bbaa55244719fb80bcf581281e0493.
kdnic_legacy.sys is a Windows kernel-mode driver (.sys) analyzed by DriverShield for vulnerabilities, BYOVD abuse potential, and malware indicators. It is code-signed by Microsoft Windows.
Related: Other drivers signed by Microsoft Windows · What an IOCTL dispatch code is · BYOVD research index · full driver database · CVE library · code signing atlas