Analysis of Dumpstorport.sys: clean verdict, risk score 14/100. 0 YARA matches. SHA256 04fa57abb91a89b7. Kernel imports, IOCTL codes, MITRE ATT&CK, and code-signing details.
DriverShield analyzed the Windows kernel driver Dumpstorport.sys and assigned a verdict of Clean with a composite risk score of 14/100, indicating no notable risk signals (0-29 band).
| Verdict | Clean (14/100) |
| YARA matches | 0 |
| File size | 38384 bytes |
| Code-signing signer | Microsoft Windows |
| Analyzed | 2026-03-22 |
| SHA256 | 04fa57abb91a89b70be1ef69ffed8d8f3a3028331a9737a955c5bc0af0083457 |
| SHA1 | 964c37e5b3008d24fc35cef8f9deaabde2f4cce4 |
| MD5 | 0964334fef2fc15fd7bdaf8cd9cb30fe |
Version resource data embedded in the Dumpstorport.sys PE header, as extracted by the analysis engine.
| File description | Storport Dump Driver |
|---|---|
| Product | Microsoft® Windows® Operating System |
| Company | Microsoft Corporation |
| Original filename | dumpstorport.sys |
| Internal name | dumpstorport.sys |
| File version | 10.0.19041.4355 (WinBuild.160101.0800) |
| Copyright | © 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 | 30 / 100 |
| IOCTL dispatch surface | 36 / 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 Dumpstorport.sys, ranked by exploitation relevance.
| API | Risk | Why it matters |
|---|---|---|
| HalGetBusDataByOffset | high | Potentially dangerous - could be used for privilege escalation or security bypass |
| KeBugCheckEx | medium | Moderate risk - system modification capability |
| DbgPrint | 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 |
|---|---|---|---|
| 0x0080850F | high | METHOD_NEITHER | FILE_DEVICE_CUSTOM Function #323 |
| 0x0080840F | high | METHOD_NEITHER | FILE_DEVICE_CUSTOM Function #259 |
| 0x002200F0 | medium | METHOD_BUFFERED | FILE_DEVICE_UNKNOWN Function #60 |
| 0x002213E8 | medium | METHOD_BUFFERED | FILE_DEVICE_UNKNOWN Function #1274 |
| 0x00228348 | medium | METHOD_BUFFERED | FILE_DEVICE_UNKNOWN Function #210 |
| 0x008000BA | medium | METHOD_OUT_DIRECT | FILE_DEVICE_CUSTOM Function #46 |
| 0x00802484 | medium | METHOD_BUFFERED | FILE_DEVICE_CUSTOM Function #2337 |
| 0x0080F981 | medium | METHOD_IN_DIRECT | FILE_DEVICE_CUSTOM Function #3680 |
| 0x00226335 | medium | METHOD_IN_DIRECT | FILE_DEVICE_UNKNOWN Function #2253 |
| 0x0080E281 | medium | METHOD_IN_DIRECT | FILE_DEVICE_CUSTOM Function #2208 |
| 0x003403AC | medium | METHOD_BUFFERED | FILE_DEVICE_DISK Function #235 |
| 0x0034002E | medium | METHOD_OUT_DIRECT | FILE_DEVICE_DISK Function #11 |
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 | 0x3869 | 0x3A00 | 6.16 | CODE, EXEC, READ |
| .rdata | 0x07A0 | 0x0800 | 4.57 | IDATA, READ |
| .data | 0x00A0 | 0x0200 | 0.28 | IDATA, READ, WRITE |
| .pdata | 0x045C | 0x0600 | 3.19 | IDATA, READ |
| .idata | 0x0444 | 0x0600 | 3.53 | IDATA, READ |
| PAGE | 0x02F5 | 0x0400 | 5.07 | CODE, EXEC, READ |
| .edata | 0x085F | 0x0A00 | 4.45 | IDATA, READ |
| INIT | 0x02A2 | 0x0400 | 4.59 | CODE, EXEC, READ, DISCARD |
| GFIDS | 0x0120 | 0x0200 | 2.14 | IDATA, READ, DISCARD |
| .rsrc | 0x0410 | 0x0600 | 2.47 | IDATA, READ, DISCARD |
| .reloc | 0x0194 | 0x0200 | 3.72 | 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 |
|---|---|---|
| T1014 | Rootkit | Defense Evasion |
| T1068 | Exploitation for Privilege Escalation | Privilege Escalation |
| T1071 | Application Layer Protocol | Command and Control |
| T1542.001 | Pre-OS Boot: System Firmware | Persistence |
| T1543.003 | Windows Service | Persistence |
| T1601 | Modify System Image | Defense Evasion |
| 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 no_findings, 0 paths explored at a maximum depth of 0. Vulnerability classes reached: 0. Exploitable paths: 0.
Based on DriverShield static and dynamic analysis, Dumpstorport.sys is assessed as clean, with no notable risk signals. Its composite risk score is 14/100 (verdict: clean). Always validate findings independently before acting.
Dumpstorport.sys has a DriverShield composite risk score of 14/100, placing it in the clean verdict band. SHA256: 04fa57abb91a89b70be1ef69ffed8d8f3a3028331a9737a955c5bc0af0083457.
Dumpstorport.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