Analysis of cpqsysio64.sys: vulnerable verdict, risk score 72/100. 2 YARA matches, 0/75 multi-engine detections. SHA256 4024b090cebcabaa. Kernel imports, IOCTL codes, MITRE ATT&CK, and code-signing details.
DriverShield analyzed the Windows kernel driver cpqsysio64.sys and assigned a verdict of Vulnerable with a composite risk score of 72/100, indicating a known or likely vulnerability surface (60-79 band).
| Verdict | Vulnerable (72/100) |
| YARA matches | 2 |
| Multi-engine detections | 0 / 75 |
| File size | 15168 bytes |
| Code-signing signer | GlobalSign Timestamping CA |
| Analyzed | 2026-04-02 |
| SHA256 | 4024b090cebcabaab884c84ec80ffb15622d12632f236383a9b0a470bff9fe33 |
| SHA1 | e17fa2e3ca1d59e2dd8ddbc1020d77bb3b7156d0 |
| MD5 | cb7bc352e0a7531faec48de1dbd8a9a1 |
Version resource data embedded in the cpqsysio64.sys PE header, as extracted by the analysis engine.
| File description | Physical memory driver |
|---|---|
| Product | Physical memory driver |
| Company | Hewlett-Packard |
| Original filename | cpqsysio.sys |
| Internal name | cpqsysio |
| File version | 4.5.0.0 |
| Copyright | Copyright 2004-2009 by Hewlett-Packard Development Company, L.P. |
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 | 80 / 100 |
| Dangerous kernel imports | 100 / 100 |
| IOCTL dispatch surface | 12 / 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 cpqsysio64.sys, ranked by exploitation relevance.
| API | Risk | Why it matters |
|---|---|---|
| MmMapIoSpace | critical | Highly dangerous - potential for arbitrary code execution, memory corruption, or process termination |
| ZwMapViewOfSection | critical | Highly dangerous - potential for arbitrary code execution, memory corruption, or process termination |
| MmAllocateContiguousMemory | high | Potentially dangerous - could be used for privilege escalation or security bypass |
| MmGetPhysicalAddress | high | Potentially dangerous - could be used for privilege escalation or security bypass |
| KeBugCheckEx | medium | Moderate risk - system modification capability |
| MmUnmapIoSpace | medium | Moderate risk - system modification capability |
| IoDeleteSymbolicLink | low | Standard kernel API - generally benign |
| IoCreateDevice | low | Standard kernel API - generally benign |
| IoCreateSymbolicLink | low | Standard kernel API - generally benign |
| IoDeleteDevice | low | Standard kernel API - generally benign |
| RtlInitUnicodeString | low | Standard kernel API - generally benign |
| ZwClose | low | Standard kernel API - generally benign |
| IofCompleteRequest | 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 |
|---|---|---|---|
| 0x002200F0 | medium | METHOD_BUFFERED | FILE_DEVICE_UNKNOWN Function #60 |
| 0x0080249C | medium | METHOD_BUFFERED | FILE_DEVICE_CUSTOM Function #2343 |
| 0x00340304 | medium | METHOD_BUFFERED | FILE_DEVICE_DISK Function #193 |
| 0x00340030 | medium | METHOD_BUFFERED | FILE_DEVICE_DISK Function #12 |
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 | 0x098E | 0x0A00 | 5.74 | CODE, EXEC, READ |
| .rdata | 0x0160 | 0x0200 | 2.17 | IDATA, READ |
| .data | 0x0120 | 0x0200 | 0.3 | IDATA, READ, WRITE |
| .pdata | 0x0054 | 0x0200 | 0.76 | IDATA, READ |
| INIT | 0x0292 | 0x0400 | 3.72 | CODE, EXEC, READ, WRITE, DISCARD |
| .rsrc | 0x0368 | 0x0400 | 2.88 | IDATA, READ, DISCARD |
| Control Flow Guard | Not enabled |
|---|---|
| ASLR | Not enabled |
| DEP | Not enabled |
| Integrity check | Not enforced |
| Mitigation score | 20 / 100 |
| Rule | Severity | Detects |
|---|---|---|
| BYOVD_MemRW | critical | Phys memory mapping + device creation |
| 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 |
| T1543.003 | Windows Service | Persistence |
| T1569.002 | Service Execution | Execution |
| T1652 | Device Driver Discovery | Discovery |
| Signer | GlobalSign Timestamping CA |
|---|---|
| Signer organisation | GlobalSign |
| Issuer | GlobalSign Root CA |
| Serial | 400000000012019C19066 |
| Valid from | 2009-03-18 11:00 UTC |
| Valid until | 2028-01-28 12:00 UTC |
| Signature validity | Verified |
Engine angr, status completed, 20 paths explored at a maximum depth of 20. Vulnerability classes reached: 1. Exploitable paths: 0.
Based on DriverShield static and dynamic analysis, cpqsysio64.sys is flagged as vulnerable and is a potential Bring Your Own Vulnerable Driver (BYOVD) risk. Its composite risk score is 72/100 (verdict: vulnerable). Always validate findings independently before acting.
cpqsysio64.sys has a DriverShield composite risk score of 72/100, placing it in the vulnerable verdict band. SHA256: 4024b090cebcabaab884c84ec80ffb15622d12632f236383a9b0a470bff9fe33.
cpqsysio64.sys is a Windows kernel-mode driver (.sys) analyzed by DriverShield for vulnerabilities, BYOVD abuse potential, and malware indicators. It is code-signed by GlobalSign Timestamping CA.
Related: Other drivers signed by GlobalSign Timestamping CA · What an IOCTL dispatch code is · How YARA matching feeds the score · BYOVD research index · full driver database · CVE library · code signing atlas