Analysis of WNPDriver.sys: malicious verdict, risk score 88/100. 1 YARA match, 0/76 multi-engine detections. SHA256 74b3b7c559af70dc. Kernel imports, IOCTL codes, MITRE ATT&CK, and code-signing details.
DriverShield analyzed the Windows kernel driver WNPDriver.sys and assigned a verdict of Malicious with a composite risk score of 88/100, indicating malicious indicators (80-100 band).
| Verdict | Malicious (88/100) |
| YARA matches | 1 |
| Multi-engine detections | 0 / 76 |
| File size | 43760 bytes |
| Code-signing signer | Intel Corporation |
| Analyzed | 2026-03-23 |
| SHA256 | 74b3b7c559af70dca454486d49352bd251d68c43637b2898e4da8bcae29a447f |
| SHA1 | eb61a7b8431cdb5a81fb8372a6027905d0f599d9 |
| MD5 | 31561077939a732b36f495523acd81a4 |
Version resource data embedded in the WNPDriver.sys PE header, as extracted by the analysis engine.
| File description | Intel(R) PCH Controlled Access Driver (Intel(R) PCH CAD) |
|---|---|
| Product | Intel(R) PCH Controlled Access Driver (Intel(R) PCH CAD) |
| Company | Intel Corporation |
| Original filename | wnpdriver.sys |
| Internal name | wnpdriver.sys |
| File version | 1.0.0.94 |
| Copyright | Copyright (c) 2019-2022 Intel 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 | 30 / 100 |
| Dangerous kernel imports | 100 / 100 |
| IOCTL dispatch surface | 100 / 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 WNPDriver.sys, ranked by exploitation relevance.
| API | Risk | Why it matters |
|---|---|---|
| MmMapLockedPagesSpecifyCache | critical | Highly dangerous - potential for arbitrary code execution, memory corruption, or process termination |
| MmMapIoSpace | critical | Highly dangerous - potential for arbitrary code execution, memory corruption, or process termination |
| MmGetSystemRoutineAddress | high | Potentially dangerous - could be used for privilege escalation or security bypass |
| KeBugCheckEx | medium | Moderate risk - system modification capability |
| ZwQuerySystemInformation | medium | Moderate risk - system modification capability |
| MmUnmapIoSpace | medium | Moderate risk - system modification capability |
| RtlInitUnicodeString | 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 |
|---|---|---|---|
| 0x0022201C | critical (known exploit) | METHOD_BUFFERED | Process termination by PID (wsftprm) |
| 0x00222000 | medium (known exploit) | METHOD_BUFFERED | Driver communication init |
| 0x0022BB07 | high | METHOD_NEITHER | FILE_DEVICE_UNKNOWN Function #3777 |
| 0x00343413 | high | METHOD_NEITHER | FILE_DEVICE_DISK Function #3332 |
| 0x002200F0 | medium | METHOD_BUFFERED | FILE_DEVICE_UNKNOWN Function #60 |
| 0x0022B315 | medium | METHOD_IN_DIRECT | FILE_DEVICE_UNKNOWN Function #3269 |
| 0x0022C305 | medium | METHOD_IN_DIRECT | FILE_DEVICE_UNKNOWN Function #193 |
| 0x00222024 | medium | METHOD_BUFFERED | FILE_DEVICE_UNKNOWN Function #2057 |
| 0x00222018 | medium | METHOD_BUFFERED | FILE_DEVICE_UNKNOWN Function #2054 |
| 0x0034641C | medium | METHOD_BUFFERED | FILE_DEVICE_DISK Function #2311 |
| 0x003403E0 | medium | METHOD_BUFFERED | FILE_DEVICE_DISK Function #248 |
| 0x00340039 | medium | METHOD_IN_DIRECT | FILE_DEVICE_DISK Function #14 |
| 0x008002A2 | medium | METHOD_OUT_DIRECT | FILE_DEVICE_CUSTOM Function #168 |
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 | 0x2D6A | 0x2E00 | 6.22 | CODE, EXEC, READ |
| .rdata | 0x09C4 | 0x0A00 | 4.55 | IDATA, READ |
| .data | 0x1140 | 0x0200 | 1.09 | IDATA, READ, WRITE |
| .pdata | 0x027C | 0x0400 | 2.75 | IDATA, READ |
| PAGE | 0x0C3C | 0x0E00 | 5.65 | CODE, EXEC, READ |
| INIT | 0x0538 | 0x0600 | 5.26 | CODE, EXEC, READ, DISCARD |
| .rsrc | 0x04C8 | 0x0600 | 2.99 | IDATA, READ, DISCARD |
| .reloc | 0x0034 | 0x0200 | 0.65 | IDATA, READ, DISCARD |
| Control Flow Guard | Enabled |
|---|---|
| ASLR | Enabled |
| DEP | Enabled |
| Integrity check | Not enforced |
| Mitigation score | 85 / 100 |
| Rule | Severity | Detects |
|---|---|---|
| SUSP_PhysMem | high | Physical memory mapping |
Techniques this driver could enable if loaded by an adversary.
| ID | Technique | Tactic |
|---|---|---|
| T1003 | OS Credential Dumping | Credential Access |
| T1003.001 | OS Credential Dumping: LSASS Memory | Credential Access |
| T1006 | Direct Volume Access | Defense Evasion |
| T1055.012 | Process Hollowing | Defense Evasion |
| T1068 | Exploitation for Privilege Escalation | Privilege Escalation |
| 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 | Service Execution | Execution |
| T1652 | Device Driver Discovery | Discovery |
| Signer | Intel Corporation |
|---|---|
| Signer organisation | Intel Corporation |
| Issuer | Sectigo RSA Code Signing CA |
| Serial | ADE8114D7679B066F2DB2DFD2F67AC2 |
| Valid from | 2021-04-05 00:00 UTC |
| Valid until | 2023-04-05 23:59 UTC (expired) |
| Signature validity | Not verified |
Engine angr, status completed, 27 paths explored at a maximum depth of 27. Vulnerability classes reached: 0. Exploitable paths: 0.
Based on DriverShield static and dynamic analysis, WNPDriver.sys is flagged as malicious and should be treated as dangerous. Its composite risk score is 88/100 (verdict: malicious). Always validate findings independently before acting.
WNPDriver.sys has a DriverShield composite risk score of 88/100, placing it in the malicious verdict band. SHA256: 74b3b7c559af70dca454486d49352bd251d68c43637b2898e4da8bcae29a447f.
WNPDriver.sys is a Windows kernel-mode driver (.sys) analyzed by DriverShield for vulnerabilities, BYOVD abuse potential, and malware indicators. It is code-signed by Intel Corporation.
Related: Other drivers signed by Intel Corporation · What an IOCTL dispatch code is · How YARA matching feeds the score · BYOVD research index · full driver database · CVE library · code signing atlas