Analysis of EnPortv.sys: vulnerable verdict, risk score 78/100. 3 YARA matches, 3/75 multi-engine detections. SHA256 d42f1b420747b825. Kernel imports, IOCTL codes, MITRE ATT&CK, and code-signing details.
DriverShield analyzed the Windows kernel driver EnPortv.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 | 3 |
| Multi-engine detections | 3 / 75 |
| File size | 74472 bytes |
| Code-signing signer | Symantec Time Stamping Services CA - G2 |
| Analyzed | 2026-09-06 |
| SHA256 | d42f1b420747b82533e33107c710c45c29ff20aa5da3d1c8498b7bed7f9ebc81 |
| SHA1 | 4914037cdf1c8bce60be2ca64b19a4af728c932a |
| MD5 | 20a783d3d7076d7a51c66e9eac2ae643 |
Version resource data embedded in the EnPortv.sys PE header, as extracted by the analysis engine.
| File description | EnCase Driver for WinNET 64 bit Svn Rev:98733 with EnCase 7.9.6.3 |
|---|---|
| Product | EnCase Driver |
| Company | Guidance Software Inc. |
| Original filename | EnPortv.sys |
| Internal name | EnPortv.sys |
| Copyright | © Copyright 2005-present, Guidance Software, Inc. 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 | 100 / 100 |
| Dangerous kernel imports | 100 / 100 |
| IOCTL dispatch surface | 100 / 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 EnPortv.sys, ranked by exploitation relevance.
| API | Risk | Why it matters |
|---|---|---|
| ZwTerminateProcess | critical | Highly dangerous - potential for arbitrary code execution, memory corruption, or process termination |
| ZwMapViewOfSection | 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 |
| KeAttachProcess | high | Potentially dangerous - could be used for privilege escalation or security bypass |
| PsLookupProcessByProcessId | high | Potentially dangerous - could be used for privilege escalation or security bypass |
| ZwOpenProcess | high | Potentially dangerous - could be used for privilege escalation or security bypass |
| ObOpenObjectByPointer | medium | Moderate risk - system modification capability |
| ObReferenceObjectByHandle | medium | Moderate risk - system modification capability |
| ZwSetValueKey | medium | Moderate risk - system modification capability |
| ZwCreateKey | medium | Moderate risk - system modification capability |
| KeBugCheckEx | medium | Moderate risk - system modification capability |
| ProbeForRead | low | Standard kernel API - generally benign |
| RtlInitUnicodeString | low | Standard kernel API - generally benign |
| IoCreateDeviceSecure | low | Standard kernel API - generally benign |
| DbgPrint | low | Standard kernel API - generally benign |
| ZwOpenKey | low | Standard kernel API - generally benign |
| IoCreateDevice | low | Standard kernel API - generally benign |
| IoDeleteSymbolicLink | low | Standard kernel API - generally benign |
| ZwClose | low | Standard kernel API - generally benign |
| KeWaitForSingleObject | low | Standard kernel API - generally benign |
| IoDeleteDevice | low | Standard kernel API - generally benign |
| ZwCreateFile | low | Standard kernel API - generally benign |
| IofCompleteRequest | low | Standard kernel API - generally benign |
| ZwQueryValueKey | low | Standard kernel API - generally benign |
| IoCreateSymbolicLink | low | Standard kernel API - generally benign |
| 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 |
|---|---|---|---|
| 0x0080840F | high | METHOD_NEITHER | FILE_DEVICE_CUSTOM Function #259 |
| 0x002200F0 | medium | METHOD_BUFFERED | FILE_DEVICE_UNKNOWN Function #60 |
| 0x0080248C | medium | METHOD_BUFFERED | FILE_DEVICE_CUSTOM Function #2339 |
| 0x0080C481 | medium | METHOD_IN_DIRECT | FILE_DEVICE_CUSTOM Function #288 |
| 0x008024B4 | medium | METHOD_BUFFERED | FILE_DEVICE_CUSTOM Function #2349 |
| 0x0080249C | medium | METHOD_BUFFERED | FILE_DEVICE_CUSTOM Function #2343 |
| 0x003475E8 | medium | METHOD_BUFFERED | FILE_DEVICE_DISK Function #3450 |
| 0x00802484 | medium | METHOD_BUFFERED | FILE_DEVICE_CUSTOM Function #2337 |
| 0x0080E715 | medium | METHOD_IN_DIRECT | FILE_DEVICE_CUSTOM Function #2501 |
| 0x002209E8 | medium | METHOD_BUFFERED | FILE_DEVICE_UNKNOWN Function #634 |
| 0x0080EC81 | medium | METHOD_IN_DIRECT | FILE_DEVICE_CUSTOM Function #2848 |
| 0x00343130 | medium | METHOD_BUFFERED | FILE_DEVICE_DISK Function #3148 |
| 0x0080007E | medium | METHOD_OUT_DIRECT | FILE_DEVICE_CUSTOM Function #31 |
| 0x00340030 | medium | METHOD_BUFFERED | FILE_DEVICE_DISK Function #12 |
| 0x00340032 | medium | METHOD_OUT_DIRECT | FILE_DEVICE_DISK Function #12 |
| 0x00223421 | medium | METHOD_IN_DIRECT | FILE_DEVICE_UNKNOWN Function #3336 |
| 0x00223058 | medium | METHOD_BUFFERED | FILE_DEVICE_UNKNOWN Function #3094 |
| 0x00223094 | medium | METHOD_BUFFERED | FILE_DEVICE_UNKNOWN Function #3109 |
| 0x0022304C | medium | METHOD_BUFFERED | FILE_DEVICE_UNKNOWN Function #3091 |
| 0x00223048 | medium | METHOD_BUFFERED | FILE_DEVICE_UNKNOWN Function #3090 |
| 0x00223050 | medium | METHOD_BUFFERED | FILE_DEVICE_UNKNOWN Function #3092 |
| 0x00223060 | medium | METHOD_BUFFERED | FILE_DEVICE_UNKNOWN Function #3096 |
| 0x00223064 | medium | METHOD_BUFFERED | FILE_DEVICE_UNKNOWN Function #3097 |
| 0x00223054 | medium | METHOD_BUFFERED | FILE_DEVICE_UNKNOWN Function #3093 |
Showing 24 of 39 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 | 0x9F7E | 0xA000 | 6.45 | CODE, EXEC, READ |
| .rdata | 0x2630 | 0x2800 | 2.69 | IDATA, READ |
| .data | 0x0A8C | 0x0600 | 2.09 | IDATA, READ, WRITE |
| .pdata | 0x05F4 | 0x0600 | 4.59 | IDATA, READ |
| PAGE | 0x1AA8 | 0x1C00 | 6.11 | CODE, EXEC, READ |
| INIT | 0x0896 | 0x0A00 | 4.78 | CODE, EXEC, READ, WRITE, DISCARD |
| .rsrc | 0x03F8 | 0x0400 | 3.35 | IDATA, READ, DISCARD |
| .reloc | 0x0142 | 0x0200 | 1.91 | 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 |
|---|---|---|
| PUA_VULN_Driver_Guidancesoftwareinc_Enportvsys_Encasedriver_D42F | medium | Detects vulnerable driver mentioned in known-vulnerable driver corpus project using VersionInfo values from the PE header - EnPortv.sys. Investigate matches in context: expected filenames or standard ... |
| BYOVD_ProcKill | critical | Process termination EDR killer |
| MAL_EDRKiller | critical | Generic EDR killer pattern |
Techniques this driver could enable if loaded by an adversary.
| ID | Technique | Tactic |
|---|---|---|
| T1003.001 | OS Credential Dumping: LSASS Memory | Credential Access |
| T1055.001 | Process Injection: DLL Injection | Defense Evasion |
| T1055.012 | Process Hollowing | Defense Evasion |
| T1068 | Exploitation for Privilege Escalation | Privilege Escalation |
| T1071 | Application Layer Protocol | Command and Control |
| T1112 | Modify Registry | Defense Evasion |
| T1211 | Exploitation for Defense Evasion | Defense Evasion |
| T1489 | Service Stop | Impact |
| T1543.003 | Windows Service | Persistence |
| T1547.001 | Registry Run Keys | Persistence |
| T1553.002 | Subvert Trust Controls: Code Signing | Defense Evasion |
| T1562.001 | Disable/Modify Tools | Defense Evasion |
| T1569.002 | Service Execution | Execution |
| T1652 | Device Driver Discovery | Discovery |
| Signer | Symantec Time Stamping Services CA - G2 |
|---|---|
| Signer organisation | Symantec Corporation |
| Issuer | Thawte Timestamping CA |
| Serial | 7E93EBFB7CC64E59EA4B9A77D406FC3B |
| Valid from | 2012-12-21 00:00 UTC |
| Valid until | 2020-12-30 23:59 UTC (expired) |
| Signature validity | Not verified |
Engine angr, status timeout, 98 paths explored at a maximum depth of 98. Vulnerability classes reached: 0. 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, EnPortv.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.
EnPortv.sys has a DriverShield composite risk score of 78/100, placing it in the vulnerable verdict band. SHA256: d42f1b420747b82533e33107c710c45c29ff20aa5da3d1c8498b7bed7f9ebc81.
EnPortv.sys is a Windows kernel-mode driver (.sys) analyzed by DriverShield for vulnerabilities, BYOVD abuse potential, and malware indicators. It is code-signed by Symantec Time Stamping Services CA - G2.
Related: Other drivers signed by Symantec Time Stamping Services CA - G2 · What an IOCTL dispatch code is · How YARA matching feeds the score · BYOVD research index · full driver database · CVE library · code signing atlas