Analysis of GLCKIO2.sys: suspicious verdict, risk score 58/100. 0 YARA matches, 2/75 multi-engine detections. SHA256 61a1bdddd3c512e6. Kernel imports, IOCTL codes, MITRE ATT&CK, and code-signing details.
DriverShield analyzed the Windows kernel driver GLCKIO2.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 | 0 |
| Multi-engine detections | 2 / 75 |
| File size | 19392 bytes |
| Code-signing signer | ASUSTeK Computer Inc. |
| Analyzed | 2026-09-06 |
| SHA256 | 61a1bdddd3c512e681818debb5bee94db701768fc25e674fcad46592a3259bd0 |
| SHA1 | cc51be79ae56bc97211f6b73cc905c3492da8f9d |
| MD5 | d253c19194a18030296ae62a10821640 |
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 | 0 / 100 |
| Dangerous kernel imports | 93 / 100 |
| IOCTL dispatch surface | 3 / 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 GLCKIO2.sys, ranked by exploitation relevance.
| API | Risk | Why it matters |
|---|---|---|
| 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 |
| ObReferenceObjectByHandle | medium | Moderate risk - system modification capability |
| KeBugCheckEx | medium | Moderate risk - system modification capability |
| IoDeleteSymbolicLink | low | Standard kernel API - generally benign |
| ZwClose | low | Standard kernel API - generally benign |
| IoCreateSymbolicLink | low | Standard kernel API - generally benign |
| RtlInitUnicodeString | low | Standard kernel API - generally benign |
| IofCompleteRequest | low | Standard kernel API - generally benign |
| IoDeleteDevice | low | Standard kernel API - generally benign |
| IoCreateDevice | 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 |
|---|---|---|---|
| 0x002200F0 | medium | METHOD_BUFFERED | FILE_DEVICE_UNKNOWN Function #60 |
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 | 0x1374 | 0x1400 | 6.31 | CODE, EXEC, READ |
| .rdata | 0x06D4 | 0x0800 | 4.99 | IDATA, READ |
| .data | 0x0218 | 0x0200 | 0.28 | IDATA, READ, WRITE |
| .pdata | 0x00FC | 0x0200 | 2.1 | IDATA, READ |
| INIT | 0x02B2 | 0x0400 | 3.93 | CODE, EXEC, READ, DISCARD |
| .reloc | 0x0014 | 0x0200 | 0.23 | IDATA, READ, DISCARD |
| Control Flow Guard | Not enabled |
|---|---|
| ASLR | Enabled |
| DEP | Enabled |
| Integrity check | Not enforced |
| Mitigation score | 55 / 100 |
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 |
| T1211 | Exploitation for Defense Evasion | Defense Evasion |
| T1543.003 | Windows Service | Persistence |
| T1553.002 | Subvert Trust Controls: Code Signing | Defense Evasion |
| T1562.001 | Impair Defenses | Defense Evasion |
| T1569.002 | Service Execution | Execution |
| T1652 | Device Driver Discovery | Discovery |
| Signer | ASUSTeK Computer Inc. |
|---|---|
| Signer organisation | ASUSTeK Computer Inc. |
| Issuer | DigiCert SHA2 High Assurance Code Signing CA |
| Serial | 81666295845159F57AE88F441BF237E |
| Valid from | 2015-07-27 00:00 UTC |
| Valid until | 2018-08-01 12:00 UTC (expired) |
| Signature validity | Not verified |
Engine angr, status completed, 20 paths explored at a maximum depth of 20. 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, GLCKIO2.sys shows some suspicious signals and warrants manual review. Its composite risk score is 58/100 (verdict: suspicious). Always validate findings independently before acting.
GLCKIO2.sys has a DriverShield composite risk score of 58/100, placing it in the suspicious verdict band. SHA256: 61a1bdddd3c512e681818debb5bee94db701768fc25e674fcad46592a3259bd0.
GLCKIO2.sys is a Windows kernel-mode driver (.sys) analyzed by DriverShield for vulnerabilities, BYOVD abuse potential, and malware indicators. It is code-signed by ASUSTeK Computer Inc..
Related: Other drivers signed by ASUSTeK Computer Inc. · What an IOCTL dispatch code is · BYOVD research index · full driver database · CVE library · code signing atlas