Analysis of devauthe.sys: clean verdict, risk score 12/100. 0 YARA matches. SHA256 ff18673d0af8d9ae. Kernel imports, IOCTL codes, MITRE ATT&CK, and code-signing details.
DriverShield analyzed the Windows kernel driver devauthe.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 | 47104 bytes |
| Analyzed | 2026-03-22 |
| SHA256 | ff18673d0af8d9ae177ad5df21ae1e9b86d91c6de727ccf8f4aba7cb1e1d22c3 |
| SHA1 | b161e6051fe461e56154240bd044c34749a693e7 |
| MD5 | 9acbdb19553a14b76cad70d59542f1e9 |
Version resource data embedded in the devauthe.sys PE header, as extracted by the analysis engine.
| File description | Xbox Device Authentication Driver |
|---|---|
| Product | Microsoft® Windows® Operating System |
| Company | Microsoft Corporation |
| Original filename | DevAuth.sys |
| Internal name | DevAuth.sys |
| File version | 10.0.19041.4717 (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 | 15 / 100 |
| IOCTL dispatch surface | 27 / 100 |
| Known-vulnerable corpus | 0 / 100 |
| Code-signing state | 50 / 100 |
| Packing and entropy | 80 / 100 |
| Dynamic behaviour | 0 / 100 |
| CVE cross-reference | 0 / 100 |
Kernel-mode APIs resolved from the Import Address Table of devauthe.sys, ranked by exploitation relevance.
| API | Risk | Why it matters |
|---|---|---|
| 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 |
|---|---|---|---|
| 0x0034BB07 | high | METHOD_NEITHER | FILE_DEVICE_DISK Function #3777 |
| 0x0080840F | high | METHOD_NEITHER | FILE_DEVICE_CUSTOM Function #259 |
| 0x0080C481 | medium | METHOD_IN_DIRECT | FILE_DEVICE_CUSTOM Function #288 |
| 0x00802484 | medium | METHOD_BUFFERED | FILE_DEVICE_CUSTOM Function #2337 |
| 0x0080EC81 | medium | METHOD_IN_DIRECT | FILE_DEVICE_CUSTOM Function #2848 |
| 0x0080249C | medium | METHOD_BUFFERED | FILE_DEVICE_CUSTOM Function #2343 |
| 0x003403AC | medium | METHOD_BUFFERED | FILE_DEVICE_DISK Function #235 |
| 0x0022006C | medium | METHOD_BUFFERED | FILE_DEVICE_UNKNOWN Function #27 |
| 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 | 0x5FA9 | 0x6000 | 6.36 | CODE, EXEC, READ |
| .rdata | 0x2E08 | 0x3000 | 6.84 | IDATA, READ |
| .data | 0x0980 | 0x0600 | 7.76 | IDATA, READ, WRITE |
| .pdata | 0x0450 | 0x0600 | 3.36 | IDATA, READ |
| .idata | 0x0464 | 0x0600 | 3.27 | IDATA, READ |
| PAGE | 0x0040 | 0x0200 | 1.01 | CODE, EXEC, READ |
| .edata | 0x0154 | 0x0200 | 3.59 | IDATA, READ |
| INIT | 0x0082 | 0x0200 | 1.82 | CODE, EXEC, READ, DISCARD |
| GFIDS | 0x0044 | 0x0200 | 0.58 | IDATA, READ, DISCARD |
| .rsrc | 0x0410 | 0x0600 | 2.51 | IDATA, READ, DISCARD |
| .reloc | 0x022C | 0x0400 | 3.21 | 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, devauthe.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.
devauthe.sys has a DriverShield composite risk score of 12/100, placing it in the clean verdict band. SHA256: ff18673d0af8d9ae177ad5df21ae1e9b86d91c6de727ccf8f4aba7cb1e1d22c3.
devauthe.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