Analysis of HpPortIox64.sys: suspicious verdict, risk score 35/100. 1 YARA match, 1/75 multi-engine detections. SHA256 c5050a2017490fff. Kernel imports, IOCTL codes, MITRE ATT&CK, and code-signing details.
DriverShield analyzed the Windows kernel driver HpPortIox64.sys and assigned a verdict of Suspicious with a composite risk score of 35/100, indicating some risk signals warranting review (30-59 band).
| Verdict | Suspicious (35/100) |
| YARA matches | 1 |
| Multi-engine detections | 1 / 75 |
| File size | 49176 bytes |
| Code-signing signer | DigiCert SHA2 Assured ID Code Signing CA |
| Analyzed | 2026-09-06 |
| SHA256 | c5050a2017490fff7aa53c73755982b339ddb0fd7cef2cde32c81bc9834331c5 |
| SHA1 | 8c377ab4eebc5f4d8dd7bb3f90c0187dfdd3349f |
| MD5 | a641e3dccba765a10718c9cb0da7879e |
Version resource data embedded in the HpPortIox64.sys PE header, as extracted by the analysis engine.
| File description | HpPortIo |
|---|---|
| Product | HpPortIo |
| Company | HP Inc. |
| Original filename | HpPortIox64.sys |
| Internal name | HpPortIox64.sys |
| File version | 1.2.0.9 |
| Copyright | Copyright (C) 2020-2021 HP Inc. 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 | 5 / 100 |
| Dangerous kernel imports | 100 / 100 |
| IOCTL dispatch surface | 54 / 100 |
| Known-vulnerable corpus | 100 / 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 HpPortIox64.sys, ranked by exploitation relevance.
| API | Risk | Why it matters |
|---|---|---|
| MmGetSystemRoutineAddress | high | Potentially dangerous - could be used for privilege escalation or security bypass |
| HalSetBusDataByOffset | high | Potentially dangerous - could be used for privilege escalation or security bypass |
| HalGetBusDataByOffset | high | Potentially dangerous - could be used for privilege escalation or security bypass |
| ObReferenceObjectByHandle | medium | Moderate risk - system modification capability |
| KeBugCheckEx | medium | Moderate risk - system modification capability |
| ExAllocatePoolWithTag | low | Standard kernel API - generally benign |
| DbgPrintEx | low | Standard kernel API - generally benign |
| IoDeleteSymbolicLink | low | Standard kernel API - generally benign |
| IofCompleteRequest | low | Standard kernel API - generally benign |
| RtlInitUnicodeString | low | Standard kernel API - generally benign |
| ZwOpenFile | low | Standard kernel API - generally benign |
| IoDeleteDevice | low | Standard kernel API - generally benign |
| ZwReadFile | low | Standard kernel API - generally benign |
| ExAllocatePool | low | Standard kernel API - generally benign |
| DbgPrint | low | Standard kernel API - generally benign |
| ZwCreateFile | low | Standard kernel API - generally benign |
| IoCreateDevice | low | Standard kernel API - generally benign |
| ZwClose | low | Standard kernel API - generally benign |
| IoCreateSymbolicLink | 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 |
| 0x00808389 | medium | METHOD_IN_DIRECT | FILE_DEVICE_CUSTOM Function #226 |
| 0x9C402000 | medium | METHOD_BUFFERED | CUSTOM_LENOVO Function #2048 |
| 0x9C4060C4 | medium | METHOD_BUFFERED | CUSTOM_LENOVO Function #2097 |
| 0x9C406144 | medium | METHOD_BUFFERED | CUSTOM_LENOVO Function #2129 |
| 0x9C40A0D8 | medium | METHOD_BUFFERED | CUSTOM_LENOVO Function #2102 |
| 0x9C40A0E0 | medium | METHOD_BUFFERED | CUSTOM_LENOVO Function #2104 |
| 0x00802484 | medium | METHOD_BUFFERED | FILE_DEVICE_CUSTOM Function #2337 |
| 0x0080248C | medium | METHOD_BUFFERED | FILE_DEVICE_CUSTOM Function #2339 |
| 0x00802494 | medium | METHOD_BUFFERED | FILE_DEVICE_CUSTOM Function #2341 |
| 0x0080EC81 | medium | METHOD_IN_DIRECT | FILE_DEVICE_CUSTOM Function #2848 |
| 0x0080C481 | medium | METHOD_IN_DIRECT | FILE_DEVICE_CUSTOM Function #288 |
| 0x00342444 | medium | METHOD_BUFFERED | FILE_DEVICE_DISK Function #2321 |
| 0x0034247C | medium | METHOD_BUFFERED | FILE_DEVICE_DISK Function #2335 |
| 0x008024BC | medium | METHOD_BUFFERED | FILE_DEVICE_CUSTOM Function #2351 |
| 0x0080C081 | medium | METHOD_IN_DIRECT | FILE_DEVICE_CUSTOM Function #32 |
| 0x00340344 | medium | METHOD_BUFFERED | FILE_DEVICE_DISK Function #209 |
| 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 | 0x5D61 | 0x5E00 | 5.59 | CODE, EXEC, READ |
| .rdata | 0x0F84 | 0x1000 | 4.86 | IDATA, READ |
| .data | 0x01B8 | 0x0200 | 1.13 | IDATA, READ, WRITE |
| .pdata | 0x0270 | 0x0400 | 2.76 | IDATA, READ |
| INIT | 0x0534 | 0x0600 | 4.66 | CODE, EXEC, READ, WRITE, DISCARD |
| .rsrc | 0x03A8 | 0x0400 | 3.07 | IDATA, READ, DISCARD |
| .reloc | 0x000C | 0x0200 | 0.08 | 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 |
|---|---|---|
| PUA_VULN_Driver_Hpinc_Hpportioxsys_Hpportio_C505 | medium | Detects vulnerable driver mentioned in known-vulnerable driver corpus project using VersionInfo values from the PE header - HpPortIox64.sys. Investigate matches in context: expected filenames or stand... |
Techniques this driver could enable if loaded by an adversary.
| ID | Technique | Tactic |
|---|---|---|
| T1014 | Rootkit | Defense Evasion |
| T1068 | Exploitation for Privilege Escalation | Privilege Escalation |
| T1071 | Application Layer Protocol | Command and Control |
| T1211 | Exploitation for Defense Evasion | Defense Evasion |
| T1542.001 | Pre-OS Boot: System Firmware | Persistence |
| T1543.003 | Windows Service | Persistence |
| T1553.002 | Subvert Trust Controls: Code Signing | Defense Evasion |
| T1562.001 | Impair Defenses | Defense Evasion |
| T1569.002 | Service Execution | Execution |
| T1601 | Modify System Image | Defense Evasion |
| T1652 | Device Driver Discovery | Discovery |
| Signer | DigiCert SHA2 Assured ID Code Signing CA |
|---|---|
| Signer organisation | DigiCert Inc |
| Issuer | DigiCert Assured ID Root CA |
| Serial | 409181B5FD5BB66755343B56F955008 |
| Valid from | 2013-10-22 12:00 UTC |
| Valid until | 2028-10-22 12:00 UTC |
| Signature validity | Verified |
Engine angr, status completed, 19 paths explored at a maximum depth of 19. Vulnerability classes reached: 1. Exploitable paths: 0.
Corpus match: this hash is present in the known-vulnerable driver corpus DriverShield cross-references during analysis, which is why the score carries a full weighting on that component.
Based on DriverShield static and dynamic analysis, HpPortIox64.sys shows some suspicious signals and warrants manual review. Its composite risk score is 35/100 (verdict: suspicious). Always validate findings independently before acting.
HpPortIox64.sys has a DriverShield composite risk score of 35/100, placing it in the suspicious verdict band. SHA256: c5050a2017490fff7aa53c73755982b339ddb0fd7cef2cde32c81bc9834331c5.
HpPortIox64.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 SHA2 Assured ID Code Signing CA.
Related: Other drivers signed by DigiCert SHA2 Assured ID Code Signing CA · What an IOCTL dispatch code is · How YARA matching feeds the score · BYOVD research index · full driver database · CVE library · code signing atlas