Analysis of TeeDriverW8x64.sys: suspicious verdict, risk score 58/100. 1 YARA match, 0/75 multi-engine detections. SHA256 da3f674ca35ae91f. Kernel imports, IOCTL codes, MITRE ATT&CK, and code-signing details.
DriverShield analyzed the Windows kernel driver TeeDriverW8x64.sys and assigned a verdict of Suspicious with a composite risk score of 58/100, indicating some risk signals warranting review (30-59 band).
| Verdict | Suspicious (58/100) |
| YARA matches | 1 |
| Multi-engine detections | 0 / 75 |
| File size | 263808 bytes |
| Code-signing signer | Intel(R) Embedded Subsystems and IP Blocks Group |
| Analyzed | 2026-10-11 |
| SHA256 | da3f674ca35ae91ff482282a26eebdf8e228589155700c6a5bb481a7d92c5ff2 |
| SHA1 | d980007ca4d14ac9fd526f00a9577a0d27a833ec |
| MD5 | 5b137b3f6a3199932f835dff4c66ed2d |
Version resource data embedded in the TeeDriverW8x64.sys PE header, as extracted by the analysis engine.
| File description | Intel(R) Management Engine Interface |
|---|---|
| Product | Intel(R) Management Engine Interface |
| Company | Intel Corporation |
| Original filename | TeeDriverx64.sys |
| Internal name | TeeDriverx64.sys |
| File version | 1924.4.0.1062 |
| Copyright | Copyright (c) 2006-2019 Intel 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 | 30 / 100 |
| Dangerous kernel imports | 100 / 100 |
| IOCTL dispatch surface | 90 / 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 TeeDriverW8x64.sys, ranked by exploitation relevance.
| API | Risk | Why it matters |
|---|---|---|
| MmMapIoSpace | critical | Highly dangerous - potential for arbitrary code execution, memory corruption, or process termination |
| MmMapLockedPagesSpecifyCache | critical | Highly dangerous - potential for arbitrary code execution, memory corruption, or process termination |
| MmGetSystemRoutineAddress | high | Potentially dangerous - could be used for privilege escalation or security bypass |
| MmUnmapIoSpace | medium | Moderate risk - system modification capability |
| RtlInitAnsiString | low | Standard kernel API - generally benign |
| ExAllocatePoolWithTag | low | Standard kernel API - generally benign |
| KeSetEvent | low | Standard kernel API - generally benign |
| KeWaitForSingleObject | low | Standard kernel API - generally benign |
| KeDelayExecutionThread | low | Standard kernel API - generally benign |
| KeInitializeEvent | low | Standard kernel API - generally benign |
| RtlInitUnicodeString | low | Standard kernel API - generally benign |
| ZwClose | 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 |
|---|---|---|---|
| 0x0080820F | high | METHOD_NEITHER | FILE_DEVICE_CUSTOM Function #131 |
| 0x0022010F | high | METHOD_NEITHER | FILE_DEVICE_UNKNOWN Function #67 |
| 0x00220117 | high | METHOD_NEITHER | FILE_DEVICE_UNKNOWN Function #69 |
| 0x00226423 | high | METHOD_NEITHER | FILE_DEVICE_UNKNOWN Function #2312 |
| 0x0022011F | high | METHOD_NEITHER | FILE_DEVICE_UNKNOWN Function #71 |
| 0x0080858B | high | METHOD_NEITHER | FILE_DEVICE_CUSTOM Function #354 |
| 0x002200F0 | medium | METHOD_BUFFERED | FILE_DEVICE_UNKNOWN Function #60 |
| 0x0022BA18 | medium | METHOD_BUFFERED | FILE_DEVICE_UNKNOWN Function #3718 |
| 0x0080248C | medium | METHOD_BUFFERED | FILE_DEVICE_CUSTOM Function #2339 |
| 0x008024BC | medium | METHOD_BUFFERED | FILE_DEVICE_CUSTOM Function #2351 |
| 0x0080EC81 | medium | METHOD_IN_DIRECT | FILE_DEVICE_CUSTOM Function #2848 |
| 0x0034BA18 | medium | METHOD_BUFFERED | FILE_DEVICE_DISK Function #3718 |
| 0x0080249C | medium | METHOD_BUFFERED | FILE_DEVICE_CUSTOM Function #2343 |
| 0x0022E818 | medium | METHOD_BUFFERED | FILE_DEVICE_UNKNOWN Function #2566 |
| 0x0022BA00 | medium | METHOD_BUFFERED | FILE_DEVICE_UNKNOWN Function #3712 |
| 0x00223FE8 | medium | METHOD_BUFFERED | FILE_DEVICE_UNKNOWN Function #4090 |
| 0x00808B8D | medium | METHOD_IN_DIRECT | FILE_DEVICE_CUSTOM Function #739 |
| 0x0080BA18 | medium | METHOD_BUFFERED | FILE_DEVICE_CUSTOM Function #3718 |
| 0x003443E8 | medium | METHOD_BUFFERED | FILE_DEVICE_DISK Function #250 |
| 0x0034E845 | medium | METHOD_IN_DIRECT | FILE_DEVICE_DISK Function #2577 |
| 0x0080C481 | medium | METHOD_IN_DIRECT | FILE_DEVICE_CUSTOM Function #288 |
| 0x0080BA00 | medium | METHOD_BUFFERED | FILE_DEVICE_CUSTOM Function #3712 |
| 0x0022AF1D | medium | METHOD_IN_DIRECT | FILE_DEVICE_UNKNOWN Function #3015 |
| 0x0034002D | medium | METHOD_IN_DIRECT | FILE_DEVICE_DISK Function #11 |
Showing 24 of 30 extracted control codes.
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 | 0x2EA90 | 0x2EC00 | 6.29 | CODE, EXEC, READ |
| .rdata | 0x29DC | 0x2A00 | 5.48 | IDATA, READ |
| .data | 0x1328 | 0x0400 | 1.52 | IDATA, READ, WRITE |
| .pdata | 0x11DC | 0x1200 | 5.48 | IDATA, READ |
| PAGE | 0x4880 | 0x4A00 | 6.22 | CODE, EXEC, READ |
| INIT | 0x09C6 | 0x0A00 | 5.7 | CODE, EXEC, READ, DISCARD |
| .rsrc | 0x3340 | 0x3400 | 5.27 | IDATA, READ, DISCARD |
| .reloc | 0x0074 | 0x0200 | 1.6 | IDATA, READ, DISCARD |
| Control Flow Guard | Not enabled |
|---|---|
| ASLR | Enabled |
| DEP | Enabled |
| Integrity check | Not enforced |
| Mitigation score | 55 / 100 |
| Rule | Severity | Detects |
|---|---|---|
| SUSP_PhysMem | high | Physical memory mapping |
Techniques this driver could enable if loaded by an adversary.
| ID | Technique | Tactic |
|---|---|---|
| T1003 | OS Credential Dumping | Credential Access |
| T1003.001 | OS Credential Dumping: LSASS Memory | Credential Access |
| T1006 | Direct Volume Access | Defense Evasion |
| T1055.012 | Process Hollowing | Defense Evasion |
| T1068 | Exploitation for Privilege Escalation | Privilege Escalation |
| T1071 | Application Layer Protocol | Command and Control |
| T1211 | Exploitation for Defense Evasion | Defense Evasion |
| T1543.003 | Windows Service | Persistence |
| T1553.002 | Subvert Trust Controls: Code Signing | Defense Evasion |
| T1652 | Device Driver Discovery | Discovery |
| Signer | Intel(R) Embedded Subsystems and IP Blocks Group |
|---|---|
| Signer organisation | Intel Corporation |
| Issuer | Intel External Issuing CA 7B |
| Serial | 560000082B1E36C56B00276A8A00000000082B |
| Valid from | 2018-10-24 06:57 UTC |
| Valid until | 2020-10-23 06:57 UTC (expired) |
| Signature validity | Not verified |
Engine angr, status timeout, 59 paths explored at a maximum depth of 59. Vulnerability classes reached: 0. Exploitable paths: 10.
Based on DriverShield static and dynamic analysis, TeeDriverW8x64.sys shows some suspicious signals and warrants manual review. Its composite risk score is 58/100 (verdict: suspicious). Always validate findings independently before acting.
TeeDriverW8x64.sys has a DriverShield composite risk score of 58/100, placing it in the suspicious verdict band. SHA256: da3f674ca35ae91ff482282a26eebdf8e228589155700c6a5bb481a7d92c5ff2.
TeeDriverW8x64.sys is a Windows kernel-mode driver (.sys) analyzed by DriverShield for vulnerabilities, BYOVD abuse potential, and malware indicators. It is code-signed by Intel(R) Embedded Subsystems and IP Blocks Group.
Related: Other drivers signed by Intel(R) Embedded Subsystems and IP Blocks Group · What an IOCTL dispatch code is · How YARA matching feeds the score · BYOVD research index · full driver database · CVE library · code signing atlas