Analysis of vmmouse.sys: clean verdict, risk score 10/100. 0 YARA matches. SHA256 aa83dce0b9a8131c. Kernel imports, IOCTL codes, MITRE ATT&CK, and code-signing details.
DriverShield analyzed the Windows kernel driver vmmouse.sys and assigned a verdict of Clean with a composite risk score of 10/100, indicating no notable risk signals (0-29 band).
| Verdict | Clean (10/100) |
| YARA matches | 0 |
| File size | 34128 bytes |
| Code-signing signer | Symantec Time Stamping Services CA - G2 |
| Analyzed | 2026-03-22 |
| SHA256 | aa83dce0b9a8131cca33d58df5f62a1b3803a902c79c99ce469b5cadcc8f2b93 |
| SHA1 | d00d3d9c0190d62817459861eba26b5a4074ca4a |
| MD5 | 04fa8de8959a7f505b6ef3ab27e2459e |
Version resource data embedded in the vmmouse.sys PE header, as extracted by the analysis engine.
| File description | VMware Pointing PS/2 Device Driver |
|---|---|
| Product | VMware Pointing PS/2 Device Driver |
| Company | VMware, Inc. |
| Original filename | vmmouse.sys |
| Internal name | vmmouse.sys |
| File version | 12.5.10.0 |
| Copyright | Copyright © 1998-2019 VMware, Inc. |
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 | 24 / 100 |
| IOCTL dispatch surface | 12 / 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 vmmouse.sys, ranked by exploitation relevance.
| API | Risk | Why it matters |
|---|---|---|
| KeBugCheckEx | medium | Moderate risk - system modification capability |
| IofCompleteRequest | low | Standard kernel API - generally benign |
| IoDeleteDevice | low | Standard kernel API - generally benign |
| IoCreateDevice | 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 |
| 0x00340360 | medium | METHOD_BUFFERED | FILE_DEVICE_DISK Function #216 |
| 0x00340031 | medium | METHOD_IN_DIRECT | 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 | 0x0871 | 0x0A00 | 5.49 | CODE, EXEC, READ |
| .rdata | 0x0534 | 0x0600 | 3.58 | IDATA, READ |
| .data | 0x0010 | 0x0200 | 0.28 | IDATA, READ, WRITE |
| .pdata | 0x0120 | 0x0200 | 2.25 | IDATA, READ |
| PAGE | 0x03B1 | 0x0400 | 5.69 | CODE, EXEC, READ |
| INIT | 0x02C2 | 0x0400 | 4.23 | CODE, EXEC, READ, DISCARD |
| .rsrc | 0x03C0 | 0x0400 | 3.2 | IDATA, READ, DISCARD |
| .reloc | 0x0014 | 0x0200 | 0.26 | 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 |
| T1543.003 | Windows Service | Persistence |
| T1569.002 | System Services: Service Execution | Execution |
| T1652 | Device Driver Discovery | Discovery |
| Signer | Symantec Time Stamping Services CA - G2 |
|---|---|
| Signer organisation | Symantec Corporation |
| Issuer | Thawte Timestamping CA |
| Serial | 7E93EBFB7CC64E59EA4B9A77D406FC3B |
| Valid from | 2012-12-21 00:00 UTC |
| Valid until | 2020-12-30 23:59 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, vmmouse.sys is assessed as clean, with no notable risk signals. Its composite risk score is 10/100 (verdict: clean). Always validate findings independently before acting.
vmmouse.sys has a DriverShield composite risk score of 10/100, placing it in the clean verdict band. SHA256: aa83dce0b9a8131cca33d58df5f62a1b3803a902c79c99ce469b5cadcc8f2b93.
vmmouse.sys is a Windows kernel-mode driver (.sys) analyzed by DriverShield for vulnerabilities, BYOVD abuse potential, and malware indicators. It is code-signed by Symantec Time Stamping Services CA - G2.
Related: Other drivers signed by Symantec Time Stamping Services CA - G2 · What an IOCTL dispatch code is · BYOVD research index · full driver database · CVE library · code signing atlas