Analysis of 8b5af508dcee04dbb7dabdffeff03726ef821182ffdb8a930af57e9e7174.sys: suspicious verdict, risk score 58/100. 1 YARA match, 44/76 multi-engine detections. SHA256 8b5af508dcee04db. Kernel imports, IOCTL codes, MITRE ATT&CK, and code-signing details.
DriverShield analyzed the Windows kernel driver 8b5af508dcee04dbb7dabdffeff03726ef821182ffdb8a930af57e9e7174.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 | 44 / 76 |
| File size | 46152 bytes |
| Code-signing signer | GlobalSign |
| Analyzed | 2026-04-01 |
| SHA256 | 8b5af508dcee04dbb7dabdffeff03726ef821182ffdb8a930af57e9e71740440 |
| SHA1 | 0b566b3fd73fee2ce2ee9003ea042402b729c84a |
| MD5 | 5b2c47e72ced27ad61117c9dd2e963ca |
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 | 100 / 100 |
| IOCTL dispatch surface | 66 / 100 |
| Known-vulnerable corpus | 0 / 100 |
| Code-signing state | 0 / 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 8b5af508dcee04dbb7dabdffeff03726ef821182ffdb8a930af57e9e7174.sys, ranked by exploitation relevance.
| API | Risk | Why it matters |
|---|---|---|
| MmGetSystemRoutineAddress | 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 |
| PsSetCreateProcessNotifyRoutine | 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 |
| ZwDeleteFile | medium | Moderate risk - system modification capability |
| ZwQuerySystemInformation | medium | Moderate risk - system modification capability |
| DbgPrint | low | Standard kernel API - generally benign |
| RtlInitUnicodeString | low | Standard kernel API - generally benign |
| DbgPrintEx | low | Standard kernel API - generally benign |
| ZwClose | low | Standard kernel API - generally benign |
| IofCompleteRequest | low | Standard kernel API - generally benign |
| ExAllocatePool | low | Standard kernel API - generally benign |
| IoDeleteDevice | low | Standard kernel API - generally benign |
| IoDeleteSymbolicLink | low | Standard kernel API - generally benign |
| KeSetEvent | low | Standard kernel API - generally benign |
| IoCreateDevice | low | Standard kernel API - generally benign |
| KeInitializeEvent | low | Standard kernel API - generally benign |
| IoCreateSymbolicLink | low | Standard kernel API - generally benign |
| KeWaitForSingleObject | 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 |
|---|---|---|---|
| 0x00222000 | medium (known exploit) | METHOD_BUFFERED | Driver communication init |
| 0x002200F0 | medium | METHOD_BUFFERED | FILE_DEVICE_UNKNOWN Function #60 |
| 0x0080EC81 | medium | METHOD_IN_DIRECT | FILE_DEVICE_CUSTOM Function #2848 |
| 0x0022CB15 | medium | METHOD_IN_DIRECT | FILE_DEVICE_UNKNOWN Function #709 |
| 0x00808389 | medium | METHOD_IN_DIRECT | FILE_DEVICE_CUSTOM Function #226 |
| 0x0034F705 | medium | METHOD_IN_DIRECT | FILE_DEVICE_DISK Function #3521 |
| 0x00340030 | medium | METHOD_BUFFERED | FILE_DEVICE_DISK Function #12 |
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 | 0x29DE | 0x2A00 | 6.28 | CODE, EXEC, READ |
| .rdata | 0x070C | 0x0800 | 3.79 | IDATA, READ |
| .data | 0x2278 | 0x0400 | 3.39 | IDATA, READ, WRITE |
| .pdata | 0x01D4 | 0x0200 | 3.73 | IDATA, READ |
| INIT | 0x05A2 | 0x0600 | 5.02 | CODE, EXEC, READ, DISCARD |
| .reloc | 0x0014 | 0x0200 | 0.26 | IDATA, READ, DISCARD |
| Control Flow Guard | Enabled |
|---|---|
| ASLR | Enabled |
| DEP | Enabled |
| Integrity check | Not enforced |
| Mitigation score | 100 / 100 |
| Rule | Severity | Detects |
|---|---|---|
| SUSP_Callbacks | medium | Kernel callback registration |
Techniques this driver could enable if loaded by an adversary.
| ID | Technique | Tactic |
|---|---|---|
| T1014 | Rootkit | Defense Evasion |
| T1055.001 | Process Injection: DLL Injection | Defense Evasion |
| T1068 | Exploitation for Privilege Escalation | Privilege Escalation |
| T1071 | Application Layer Protocol | Command and Control |
| T1211 | Exploitation for Defense Evasion | Defense Evasion |
| T1489 | Service Stop | Impact |
| T1543.003 | Windows Service | Persistence |
| T1553.002 | Subvert Trust Controls: Code Signing | Defense Evasion |
| T1562.001 | Impair Defenses: Disable/Modify Tools | Defense Evasion |
| T1562.006 | Indicator Blocking | Defense Evasion |
| T1564.001 | Hidden Files and Directories | Defense Evasion |
| T1569.002 | Service Execution | Execution |
| T1652 | Device Driver Discovery | Discovery |
| Signer | GlobalSign |
|---|---|
| Signer organisation | GlobalSign |
| Issuer | GlobalSign Root CA |
| Serial | 1EE5F169DFF97352B6465D66A |
| Valid from | 2018-09-19 00:00 UTC |
| Valid until | 2028-01-28 12:00 UTC |
| Signature validity | Verified |
Engine angr, status static_approximation, 0 paths explored at a maximum depth of 0. Vulnerability classes reached: 0. Exploitable paths: 0.
Based on DriverShield static and dynamic analysis, 8b5af508dcee04dbb7dabdffeff03726ef821182ffdb8a930af57e9e7174.sys shows some suspicious signals and warrants manual review. Its composite risk score is 58/100 (verdict: suspicious). Always validate findings independently before acting.
8b5af508dcee04dbb7dabdffeff03726ef821182ffdb8a930af57e9e7174.sys has a DriverShield composite risk score of 58/100, placing it in the suspicious verdict band. SHA256: 8b5af508dcee04dbb7dabdffeff03726ef821182ffdb8a930af57e9e71740440.
8b5af508dcee04dbb7dabdffeff03726ef821182ffdb8a930af57e9e7174.sys is a Windows kernel-mode driver (.sys) analyzed by DriverShield for vulnerabilities, BYOVD abuse potential, and malware indicators. It is code-signed by GlobalSign.
Related: Other drivers signed by GlobalSign · What an IOCTL dispatch code is · How YARA matching feeds the score · BYOVD research index · full driver database · CVE library · code signing atlas