Analysis of FoxKeDriver64.sys: vulnerable verdict, risk score 78/100. 2 YARA matches, 0/57 multi-engine detections. SHA256 eb81e127e7a46c80. Kernel imports, IOCTL codes, MITRE ATT&CK, and code-signing details.
DriverShield analyzed the Windows kernel driver FoxKeDriver64.sys and assigned a verdict of Vulnerable with a composite risk score of 78/100, indicating a known or likely vulnerability surface (60-79 band).
| Verdict | Vulnerable (78/100) |
| YARA matches | 2 |
| Multi-engine detections | 0 / 57 |
| File size | 22616 bytes |
| Code-signing signer | VeriSign Time Stamping Services Signer - G2 |
| Analyzed | 2026-04-21 |
| SHA256 | eb81e127e7a46c80acdf8a3fc24a350381f24acb06f0fdf9fdcd34ce9b08d084 |
| SHA1 | ec06cb3a837d710f60ed8800c3be650317cb25ae |
| MD5 | 0215d56bfbc9a947b095aff1c31b53ad |
Version resource data embedded in the FoxKeDriver64.sys PE header, as extracted by the analysis engine.
| File description | Foxconn Kernel Driver(64bit) |
|---|---|
| Product | Foxconn (R) Kernel Driver(64bit) |
| Company | Foxconn (R) Corporation |
| Original filename | FoxKeDriver64.sys |
| Internal name | FoxKeDriver64.sys |
| File version | 1.00.01.03 built by: WinDDK |
| Copyright | Copyright (c) Foxconn 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 | 80 / 100 |
| Dangerous kernel imports | 100 / 100 |
| IOCTL dispatch surface | 81 / 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 FoxKeDriver64.sys, ranked by exploitation relevance.
| API | Risk | Why it matters |
|---|---|---|
| MmMapIoSpace | critical | Highly dangerous - potential for arbitrary code execution, memory corruption, or process termination |
| MmGetPhysicalAddress | high | Potentially dangerous - could be used for privilege escalation or security bypass |
| HalGetBusDataByOffset | high | Potentially dangerous - could be used for privilege escalation or security bypass |
| HalSetBusDataByOffset | high | Potentially dangerous - could be used for privilege escalation or security bypass |
| MmUnmapIoSpace | medium | Moderate risk - system modification capability |
| KeBugCheckEx | medium | Moderate risk - system modification capability |
| IoCreateDevice | low | Standard kernel API - generally benign |
| RtlInitUnicodeString | low | Standard kernel API - generally benign |
| IoDeleteSymbolicLink | low | Standard kernel API - generally benign |
| DbgPrint | low | Standard kernel API - generally benign |
| ExAllocatePoolWithTag | low | Standard kernel API - generally benign |
| IofCompleteRequest | low | Standard kernel API - generally benign |
| IoDeleteDevice | low | Standard kernel API - generally benign |
| KeWaitForSingleObject | low | Standard kernel API - generally benign |
| IoCreateSymbolicLink | 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 |
|---|---|---|---|
| 0x00222000 | medium (known exploit) | METHOD_BUFFERED | Driver communication init |
| 0x002200F0 | medium | METHOD_BUFFERED | FILE_DEVICE_UNKNOWN Function #60 |
| 0x008000BA | medium | METHOD_OUT_DIRECT | FILE_DEVICE_CUSTOM Function #46 |
| 0x0080EC81 | medium | METHOD_IN_DIRECT | FILE_DEVICE_CUSTOM Function #2848 |
| 0x00222028 | medium | METHOD_BUFFERED | FILE_DEVICE_UNKNOWN Function #2058 |
| 0x00222064 | medium | METHOD_BUFFERED | FILE_DEVICE_UNKNOWN Function #2073 |
| 0x00224715 | medium | METHOD_IN_DIRECT | FILE_DEVICE_UNKNOWN Function #453 |
| 0x00222404 | medium | METHOD_BUFFERED | FILE_DEVICE_UNKNOWN Function #2305 |
| 0x002220E0 | medium | METHOD_BUFFERED | FILE_DEVICE_UNKNOWN Function #2104 |
| 0x003403AC | medium | METHOD_BUFFERED | FILE_DEVICE_DISK Function #235 |
| 0x00340036 | medium | METHOD_OUT_DIRECT | FILE_DEVICE_DISK Function #13 |
| 0x0080F2B1 | medium | METHOD_IN_DIRECT | FILE_DEVICE_CUSTOM Function #3244 |
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 | 0x27A9 | 0x2800 | 6.35 | CODE, EXEC, READ |
| .rdata | 0x01FC | 0x0200 | 4.46 | IDATA, READ |
| .data | 0x019C | 0x0200 | 0.3 | IDATA, READ, WRITE |
| .pdata | 0x00B4 | 0x0200 | 1.58 | IDATA, READ |
| INIT | 0x0358 | 0x0400 | 4.35 | CODE, EXEC, READ, WRITE, DISCARD |
| .rsrc | 0x0410 | 0x0600 | 2.47 | IDATA, READ, DISCARD |
| Control Flow Guard | Not enabled |
|---|---|
| ASLR | Not enabled |
| DEP | Not enabled |
| Integrity check | Not enforced |
| Mitigation score | 5 / 100 |
| Rule | Severity | Detects |
|---|---|---|
| BYOVD_MemRW | critical | Phys memory mapping + device creation |
| 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 |
| T1014 | Rootkit | 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 |
| T1542.001 | Pre-OS Boot: System Firmware | Persistence |
| T1543.003 | Windows Service | Persistence |
| T1553.002 | Subvert Trust Controls: Code Signing | Defense Evasion |
| T1569.002 | Service Execution | Execution |
| T1601 | Modify System Image | Defense Evasion |
| T1652 | Device Driver Discovery | Discovery |
| Signer | VeriSign Time Stamping Services Signer - G2 |
|---|---|
| Signer organisation | VeriSign, Inc. |
| Issuer | VeriSign Time Stamping Services CA |
| Serial | 3825D7FAF861AF9EF490E726B5D65AD5 |
| Valid from | 2007-06-15 00:00 UTC |
| Valid until | 2012-06-14 23:59 UTC (expired) |
| Signature validity | Not verified |
Engine angr, status completed, 30 paths explored at a maximum depth of 30. Vulnerability classes reached: 1. Exploitable paths: 0.
Based on DriverShield static and dynamic analysis, FoxKeDriver64.sys is flagged as vulnerable and is a potential Bring Your Own Vulnerable Driver (BYOVD) risk. Its composite risk score is 78/100 (verdict: vulnerable). Always validate findings independently before acting.
FoxKeDriver64.sys has a DriverShield composite risk score of 78/100, placing it in the vulnerable verdict band. SHA256: eb81e127e7a46c80acdf8a3fc24a350381f24acb06f0fdf9fdcd34ce9b08d084.
FoxKeDriver64.sys is a Windows kernel-mode driver (.sys) analyzed by DriverShield for vulnerabilities, BYOVD abuse potential, and malware indicators. It is code-signed by VeriSign Time Stamping Services Signer - G2.
Related: Other drivers signed by VeriSign Time Stamping Services Signer - G2 · What an IOCTL dispatch code is · How YARA matching feeds the score · BYOVD research index · full driver database · CVE library · code signing atlas