Analysis of biontdrv.sys: vulnerable verdict, risk score 72/100. 3 YARA matches, 1/75 multi-engine detections. SHA256 fb0dbc3b9c897b75. Kernel imports, IOCTL codes, MITRE ATT&CK, and code-signing details.
DriverShield analyzed the Windows kernel driver biontdrv.sys and assigned a verdict of Vulnerable with a composite risk score of 72/100, indicating a known or likely vulnerability surface (60-79 band).
| Verdict | Vulnerable (72/100) |
| YARA matches | 3 |
| Multi-engine detections | 1 / 75 |
| File size | 39728 bytes |
| Code-signing signer | Paragon Software GmbH |
| Analyzed | 2026-09-06 |
| SHA256 | fb0dbc3b9c897b7571b94fb2203ffb1ac0facfe366b2cb1f91904ea5335018f0 |
| SHA1 | b31a85406ac9a6a69bfbee74d6dc67d9d7bddee6 |
| MD5 | ef32d203a12462403c205b39eb4eef5b |
Version resource data embedded in the biontdrv.sys PE header, as extracted by the analysis engine.
| File description | A part of Paragon System Utilities |
|---|---|
| Product | Paragon System Utilities |
| Company | Paragon Software GmbH |
| Original filename | biontdrv.sys |
| Internal name | biontdrv |
| Copyright | Copyright 1994-2017 Paragon Software GmbH |
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 | 85 / 100 |
| Dangerous kernel imports | 100 / 100 |
| IOCTL dispatch surface | 21 / 100 |
| Known-vulnerable corpus | 100 / 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 biontdrv.sys, ranked by exploitation relevance.
| API | Risk | Why it matters |
|---|---|---|
| MmMapIoSpace | critical | Highly dangerous - potential for arbitrary code execution, memory corruption, or process termination |
| MmMapLockedPages | critical | Highly dangerous - potential for arbitrary code execution, memory corruption, or process termination |
| ObReferenceObjectByHandle | medium | Moderate risk - system modification capability |
| MmUnmapIoSpace | medium | Moderate risk - system modification capability |
| RtlInitUnicodeString | low | Standard kernel API - generally benign |
| IoDeleteSymbolicLink | low | Standard kernel API - generally benign |
| IoCreateSymbolicLink | low | Standard kernel API - generally benign |
| IoBuildDeviceIoControlRequest | low | Standard kernel API - generally benign |
| KeInitializeEvent | low | Standard kernel API - generally benign |
| IofCompleteRequest | low | Standard kernel API - generally benign |
| ZwOpenFile | low | Standard kernel API - generally benign |
| KeWaitForSingleObject | low | Standard kernel API - generally benign |
| IoDeleteDevice | low | Standard kernel API - generally benign |
| IoCreateDevice | 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 |
|---|---|---|---|
| 0xC350094F | high | METHOD_NEITHER | CUSTOM_MSI Function #595 |
| 0x0022B800 | medium | METHOD_BUFFERED | FILE_DEVICE_UNKNOWN Function #3584 |
| 0x00808789 | medium | METHOD_IN_DIRECT | FILE_DEVICE_CUSTOM Function #482 |
| 0x00347315 | medium | METHOD_IN_DIRECT | FILE_DEVICE_DISK Function #3269 |
| 0x00220020 | medium | METHOD_BUFFERED | FILE_DEVICE_UNKNOWN Function #8 |
| 0x0034030C | medium | METHOD_BUFFERED | FILE_DEVICE_DISK Function #195 |
| 0x00340039 | medium | METHOD_IN_DIRECT | FILE_DEVICE_DISK Function #14 |
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 | 0x1ABC | 0x1C00 | 6.01 | CODE, EXEC, READ |
| .data | 0x0140 | 0x0200 | 0.18 | IDATA, READ, WRITE |
| .pdata | 0x00C0 | 0x0200 | 1.62 | IDATA, READ |
| .idata | 0x0574 | 0x0600 | 4.1 | IDATA, READ |
| .rsrc | 0x0370 | 0x0400 | 2.86 | IDATA, READ, DISCARD |
| .reloc | 0x000C | 0x0200 | 0.12 | IDATA, READ, DISCARD |
| Control Flow Guard | Not enabled |
|---|---|
| ASLR | Enabled |
| DEP | Enabled |
| Integrity check | Not enforced |
| Mitigation score | 55 / 100 |
| Rule | Severity | Detects |
|---|---|---|
| PUA_VULN_Driver_Paragonsoftwaregmbh_Biontdrv_Paragonsystemutilities_FB0D | medium | Detects vulnerable driver mentioned in known-vulnerable driver corpus project using VersionInfo values from the PE header - BioNTdrv.sys. Investigate matches in context: expected filenames or standard... |
| 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 |
| T1055.012 | Process Hollowing | Defense Evasion |
| T1068 | Exploitation for Privilege Escalation | Privilege Escalation |
| T1071 | Application Layer Protocol | Command and Control |
| T1543.003 | Windows Service | Persistence |
| T1562.001 | Impair Defenses | Defense Evasion |
| T1569.002 | Service Execution | Execution |
| T1652 | Device Driver Discovery | Discovery |
| Signer | Paragon Software GmbH |
|---|---|
| Signer organisation | Paragon Software GmbH |
| Issuer | VeriSign Class 3 Code Signing 2010 CA |
| Serial | 247D157352D5671A5E44263793DF43D2 |
| Valid from | 2017-08-28 00:00 UTC |
| Valid until | 2018-09-16 23:59 UTC (expired) |
| Signature validity | Not verified |
Engine angr, status completed, 10 paths explored at a maximum depth of 10. Vulnerability classes reached: 1. Exploitable paths: 0.
Corpus match: this hash is present in the known-vulnerable driver corpus DriverShield cross-references during analysis, which is why the score carries a full weighting on that component.
Based on DriverShield static and dynamic analysis, biontdrv.sys is flagged as vulnerable and is a potential Bring Your Own Vulnerable Driver (BYOVD) risk. Its composite risk score is 72/100 (verdict: vulnerable). Always validate findings independently before acting.
biontdrv.sys has a DriverShield composite risk score of 72/100, placing it in the vulnerable verdict band. SHA256: fb0dbc3b9c897b7571b94fb2203ffb1ac0facfe366b2cb1f91904ea5335018f0.
biontdrv.sys is a Windows kernel-mode driver (.sys) analyzed by DriverShield for vulnerabilities, BYOVD abuse potential, and malware indicators. It is code-signed by Paragon Software GmbH.
Related: Other drivers signed by Paragon Software GmbH · What an IOCTL dispatch code is · How YARA matching feeds the score · BYOVD research index · full driver database · CVE library · code signing atlas