Analysis of buttonconverter.sys: clean verdict, risk score 13/100. 0 YARA matches. SHA256 16a900fbab30d008. Kernel imports, IOCTL codes, MITRE ATT&CK, and code-signing details.
DriverShield analyzed the Windows kernel driver buttonconverter.sys and assigned a verdict of Clean with a composite risk score of 13/100, indicating no notable risk signals (0-29 band).
| Verdict | Clean (13/100) |
| YARA matches | 0 |
| File size | 44032 bytes |
| Analyzed | 2026-03-22 |
| SHA256 | 16a900fbab30d008f01f4cae96347bf313d9d13c7fe430249a0bf4322534cb18 |
| SHA1 | e88cccc8875be04df684fdac2532f92f5fbc1f5d |
| MD5 | ef2a1f3c5ec4efffbe9a69b892fba29c |
Version resource data embedded in the buttonconverter.sys PE header, as extracted by the analysis engine.
| File description | Button Converter Driver |
|---|---|
| Product | Microsoft® Windows® Operating System |
| Company | Microsoft Corporation |
| Original filename | btnconv.sys |
| Internal name | btnconv.sys |
| File version | 10.0.19041.1 (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 | 42 / 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 buttonconverter.sys, ranked by exploitation relevance.
| API | Risk | Why it matters |
|---|---|---|
| MmGetSystemRoutineAddress | high | Potentially dangerous - could be used for privilege escalation or security bypass |
| KeBugCheckEx | medium | Moderate risk - system modification capability |
| DbgPrintEx | low | Standard kernel API - generally benign |
| ExAllocatePoolWithTag | low | Standard kernel API - generally benign |
| RtlInitUnicodeString | 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 |
| 0x0080530D | medium | METHOD_IN_DIRECT | FILE_DEVICE_CUSTOM Function #1219 |
| 0x00223BE8 | medium | METHOD_BUFFERED | FILE_DEVICE_UNKNOWN Function #3834 |
| 0x0080C715 | medium | METHOD_IN_DIRECT | FILE_DEVICE_CUSTOM Function #453 |
| 0x00341FE8 | medium | METHOD_BUFFERED | FILE_DEVICE_DISK Function #2042 |
| 0x0080B389 | medium | METHOD_IN_DIRECT | FILE_DEVICE_CUSTOM Function #3298 |
| 0x0034DF35 | medium | METHOD_IN_DIRECT | FILE_DEVICE_DISK Function #1997 |
| 0x00345F3D | medium | METHOD_IN_DIRECT | FILE_DEVICE_DISK Function #1999 |
| 0x0034470D | medium | METHOD_IN_DIRECT | FILE_DEVICE_DISK Function #451 |
| 0x00343420 | medium | METHOD_BUFFERED | FILE_DEVICE_DISK Function #3336 |
| 0x0022341C | medium | METHOD_BUFFERED | FILE_DEVICE_UNKNOWN Function #3335 |
| 0x00800100 | medium | METHOD_BUFFERED | FILE_DEVICE_CUSTOM Function #64 |
| 0x00220100 | medium | METHOD_BUFFERED | FILE_DEVICE_UNKNOWN Function #64 |
| 0x0034038C | medium | METHOD_BUFFERED | FILE_DEVICE_DISK Function #227 |
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 | 0x5BE9 | 0x5C00 | 6.1 | CODE, EXEC, READ |
| .rdata | 0x11A0 | 0x1200 | 5.33 | IDATA, READ |
| .data | 0x0570 | 0x0400 | 2.04 | IDATA, READ, WRITE |
| .pdata | 0x0384 | 0x0400 | 3.9 | IDATA, READ |
| .idata | 0x0640 | 0x0800 | 3.57 | IDATA, READ |
| PAGE | 0x1973 | 0x1A00 | 5.97 | CODE, EXEC, READ |
| INIT | 0x04EA | 0x0600 | 5.31 | CODE, EXEC, READ, DISCARD |
| GFIDS | 0x004C | 0x0200 | 0.71 | IDATA, READ, DISCARD |
| .rsrc | 0x0400 | 0x0400 | 3.3 | IDATA, READ, DISCARD |
| .reloc | 0x03D4 | 0x0400 | 5.73 | 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 |
|---|---|---|
| T1112 | Modify Registry | Defense Evasion |
| T1211 | Exploitation for Defense Evasion | Defense Evasion |
| T1543.003 | Windows Service | Persistence |
| T1547.001 | Registry Run Keys | 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, buttonconverter.sys is assessed as clean, with no notable risk signals. Its composite risk score is 13/100 (verdict: clean). Always validate findings independently before acting.
buttonconverter.sys has a DriverShield composite risk score of 13/100, placing it in the clean verdict band. SHA256: 16a900fbab30d008f01f4cae96347bf313d9d13c7fe430249a0bf4322534cb18.
buttonconverter.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