Analysis of pstrip64.sys: suspicious verdict, risk score 58/100. 1 YARA match, 0/74 multi-engine detections. SHA256 ab01485bb7c8bc1a. Kernel imports, IOCTL codes, MITRE ATT&CK, and code-signing details.
DriverShield analyzed the Windows kernel driver pstrip64.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 / 74 |
| File size | 13008 bytes |
| Code-signing signer | EnTech Taiwan |
| Analyzed | 2026-09-06 |
| SHA256 | ab01485bb7c8bc1a9c86096eeea6d31d8fad557bf4d44072b46373d2203faa6e |
| SHA1 | af413e76094f8a60d06d161a270427c6c2e3c018 |
| MD5 | 23eed24b0a780863df35b500c4ea0733 |
Version resource data embedded in the pstrip64.sys PE header, as extracted by the analysis engine.
| File description | EnTech x64 kernel-mode driver |
|---|---|
| Product | PowerStrip |
| Company | EnTech Taiwan |
| Original filename | pstrip64.sys |
| Internal name | pstrip64.sys |
| File version | 1.0 |
| Copyright | Copyright (c) EnTech Taiwan, 2004-2006. |
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 | 5 / 100 |
| Dangerous kernel imports | 78 / 100 |
| IOCTL dispatch surface | 9 / 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 pstrip64.sys, ranked by exploitation relevance.
| API | Risk | Why it matters |
|---|---|---|
| ZwMapViewOfSection | critical | Highly dangerous - potential for arbitrary code execution, memory corruption, or process termination |
| ObReferenceObjectByHandle | medium | Moderate risk - system modification capability |
| IofCompleteRequest | low | Standard kernel API - generally benign |
| IoCreateSymbolicLink | low | Standard kernel API - generally benign |
| IoCreateDevice | low | Standard kernel API - generally benign |
| ZwClose | low | Standard kernel API - generally benign |
| DbgPrint | low | Standard kernel API - generally benign |
| IoDeleteDevice | low | Standard kernel API - generally benign |
| RtlInitUnicodeString | low | Standard kernel API - generally benign |
| IoDeleteSymbolicLink | 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 |
|---|---|---|---|
| 0x00340036 | medium | METHOD_OUT_DIRECT | FILE_DEVICE_DISK Function #13 |
| 0x003402FC | medium | METHOD_BUFFERED | FILE_DEVICE_DISK Function #191 |
| 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 | 0x0778 | 0x0800 | 5.58 | CODE, EXEC, READ |
| .rdata | 0x012C | 0x0200 | 2.75 | IDATA, READ |
| .data | 0x0008 | 0x0000 | 0 | IDATA, READ, WRITE |
| .pdata | 0x003C | 0x0200 | 0.53 | IDATA, READ |
| INIT | 0x01DA | 0x0200 | 4.13 | CODE, EXEC, READ, WRITE, DISCARD |
| .rsrc | 0x0354 | 0x0400 | 3.82 | 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_Entechtaiwan_Pstripsys_Powerstrip_AB01 | medium | Detects vulnerable driver mentioned in known-vulnerable driver corpus project using VersionInfo values from the PE header - pstrip64.sys. Investigate matches in context: expected filenames or standard... |
Techniques this driver could enable if loaded by an adversary.
| ID | Technique | Tactic |
|---|---|---|
| T1003.001 | OS Credential Dumping: LSASS Memory | Credential Access |
| 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 | EnTech Taiwan |
|---|---|
| Signer organisation | EnTech Taiwan |
| Issuer | GlobalSign ObjectSign CA |
| Serial | 100000000010DE51C0971 |
| Valid from | 2006-09-25 13:13 UTC |
| Valid until | 2007-09-25 13:13 UTC (expired) |
| Signature validity | Not verified |
Engine angr, status completed, 25 paths explored at a maximum depth of 25. 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, pstrip64.sys shows some suspicious signals and warrants manual review. Its composite risk score is 58/100 (verdict: suspicious). Always validate findings independently before acting.
pstrip64.sys has a DriverShield composite risk score of 58/100, placing it in the suspicious verdict band. SHA256: ab01485bb7c8bc1a9c86096eeea6d31d8fad557bf4d44072b46373d2203faa6e.
pstrip64.sys is a Windows kernel-mode driver (.sys) analyzed by DriverShield for vulnerabilities, BYOVD abuse potential, and malware indicators. It is code-signed by EnTech Taiwan.
Related: Other drivers signed by EnTech Taiwan · What an IOCTL dispatch code is · How YARA matching feeds the score · BYOVD research index · full driver database · CVE library · code signing atlas