Analysis of Microsoft.Bluetooth.AvrcpTransport.sys: clean verdict, risk score 12/100. 0 YARA matches. SHA256 81006eeb27b983f5. Kernel imports, IOCTL codes, MITRE ATT&CK, and code-signing details.
DriverShield analyzed the Windows kernel driver Microsoft.Bluetooth.AvrcpTransport.sys and assigned a verdict of Clean with a composite risk score of 12/100, indicating no notable risk signals (0-29 band).
| Verdict | Clean (12/100) |
| YARA matches | 0 |
| File size | 66048 bytes |
| Analyzed | 2026-03-22 |
| SHA256 | 81006eeb27b983f55c4a07f7ea174a44d33c2b5043dbee25eed610c17683b6b8 |
| SHA1 | 3a42f65e7dbd1c2e09688cc40568d39a21b054e3 |
| MD5 | 65661d2971c06feffd805abdedf50719 |
Version resource data embedded in the Microsoft.Bluetooth.AvrcpTransport.sys PE header, as extracted by the analysis engine.
| File description | Microsoft Bluetooth Avrcp Transport Driver |
|---|---|
| Product | Microsoft® Windows® Operating System |
| Company | Microsoft Corporation |
| Original filename | Microsoft.Bluetooth.AvrcpTransport.SYS |
| Internal name | Microsoft.Bluetooth.AvrcpTransport.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 | 33 / 100 |
| Known-vulnerable corpus | 0 / 100 |
| Code-signing state | 50 / 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 Microsoft.Bluetooth.AvrcpTransport.sys, ranked by exploitation relevance.
| API | Risk | Why it matters |
|---|---|---|
| MmGetSystemRoutineAddress | high | Potentially dangerous - could be used for privilege escalation or security bypass |
| KeWaitForSingleObject | low | Standard kernel API - generally benign |
| DbgPrintEx | low | Standard kernel API - generally benign |
| KeSetEvent | low | Standard kernel API - generally benign |
| RtlInitUnicodeString | low | Standard kernel API - generally benign |
| KeInitializeEvent | low | Standard kernel API - generally benign |
| ExAllocatePoolWithTag | 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 |
| 0x00802494 | medium | METHOD_BUFFERED | FILE_DEVICE_CUSTOM Function #2341 |
| 0x00808189 | medium | METHOD_IN_DIRECT | FILE_DEVICE_CUSTOM Function #98 |
| 0x0080DB15 | medium | METHOD_IN_DIRECT | FILE_DEVICE_CUSTOM Function #1733 |
| 0x0080249C | medium | METHOD_BUFFERED | FILE_DEVICE_CUSTOM Function #2343 |
| 0x0080AE89 | medium | METHOD_IN_DIRECT | FILE_DEVICE_CUSTOM Function #2978 |
| 0x0022B705 | medium | METHOD_IN_DIRECT | FILE_DEVICE_UNKNOWN Function #3521 |
| 0x00802484 | medium | METHOD_BUFFERED | FILE_DEVICE_CUSTOM Function #2337 |
| 0x0080248C | medium | METHOD_BUFFERED | FILE_DEVICE_CUSTOM Function #2339 |
| 0x00340430 | medium | METHOD_BUFFERED | FILE_DEVICE_DISK Function #268 |
| 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 | 0x626A | 0x6400 | 6.27 | CODE, EXEC, READ |
| .rdata | 0x1618 | 0x1800 | 5.17 | IDATA, READ |
| .data | 0x0500 | 0x0200 | 1.45 | IDATA, READ, WRITE |
| .pdata | 0x0660 | 0x0800 | 3.85 | IDATA, READ |
| .idata | 0x06FC | 0x0800 | 4.05 | IDATA, READ |
| PAGE | 0x5C02 | 0x5E00 | 6.29 | CODE, EXEC, READ |
| INIT | 0x0036 | 0x0200 | 0.88 | CODE, EXEC, READ, DISCARD |
| GFIDS | 0x0098 | 0x0200 | 1.53 | IDATA, READ, DISCARD |
| .rsrc | 0x0638 | 0x0800 | 2.75 | IDATA, READ |
| .reloc | 0x04A0 | 0x0600 | 4.86 | IDATA, READ, DISCARD |
| Control Flow Guard | Enabled |
|---|---|
| ASLR | Enabled |
| DEP | Enabled |
| Integrity check | Not enforced |
| Mitigation score | 80 / 100 |
Techniques this driver could enable if loaded by an adversary.
| ID | Technique | Tactic |
|---|---|---|
| T1211 | Exploitation for Defense Evasion | Defense Evasion |
| T1543.003 | Windows Service | Persistence |
| T1553.002 | Subvert Trust Controls: Code Signing | Defense Evasion |
| T1553.006 | Code Signing Policy Modification | Defense Evasion |
| T1652 | Device Driver Discovery | Discovery |
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, Microsoft.Bluetooth.AvrcpTransport.sys is assessed as clean, with no notable risk signals. Its composite risk score is 12/100 (verdict: clean). Always validate findings independently before acting.
Microsoft.Bluetooth.AvrcpTransport.sys has a DriverShield composite risk score of 12/100, placing it in the clean verdict band. SHA256: 81006eeb27b983f55c4a07f7ea174a44d33c2b5043dbee25eed610c17683b6b8.
Microsoft.Bluetooth.AvrcpTransport.sys is a Windows kernel-mode driver (.sys) analyzed by DriverShield for vulnerabilities, BYOVD abuse potential, and malware indicators.
Related: What an IOCTL dispatch code is · BYOVD research index · full driver database · CVE library · code signing atlas