SkyAMDrv.sys - Suspicious (33/100) - DriverShield Analysis

Analysis of SkyAMDrv.sys: suspicious verdict, risk score 33/100. 0 YARA matches, 0/75 multi-engine detections. SHA256 f6062c330026c3bf. Kernel imports, IOCTL codes, MITRE ATT&CK, and code-signing details.

SkyAMDrv.sys - Analysis Report

DriverShield analyzed the Windows kernel driver SkyAMDrv.sys and assigned a verdict of Suspicious with a composite risk score of 33/100, indicating some risk signals warranting review (30-59 band).

Verdict	Suspicious (33/100)
YARA matches	0
Multi-engine detections	0 / 75
File size	124104 bytes
Code-signing signer	Microsoft Windows Hardware Compatibility Publisher
Analyzed	2026-09-06
SHA256	f6062c330026c3bff7b9b81f7c0e0c6aef0b0a144b166cbea2844714034b9b28
SHA1	bab8d92cbdc8bf647b0f09c4f411b2a893a8d584
MD5	9b18a0c1218cac9a1e680b86195be8dc

Driver identity

Version resource data embedded in the SkyAMDrv.sys PE header, as extracted by the analysis engine.

File description	Sky File System Activity Monitor Driver
Product	Sky File System Activity Monitor Driver
Company	Sky Co., LTD.
Original filename	SkyAMDrv.sys
Internal name	SkyAMDrv.sys
File version	2.004.00
Copyright	Copyright (c) 2020 Sky Co., LTD. All rights reserved.

How the 33/100 score breaks down

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	100 / 100
IOCTL dispatch surface	81 / 100
Known-vulnerable corpus	0 / 100
Code-signing state	80 / 100
Packing and entropy	0 / 100
Dynamic behaviour	0 / 100
CVE cross-reference	0 / 100

Kernel imports (25)

Kernel-mode APIs resolved from the Import Address Table of SkyAMDrv.sys, ranked by exploitation relevance.

API	Risk	Why it matters
MmMapLockedPagesSpecifyCache	critical	Highly dangerous - potential for arbitrary code execution, memory corruption, or process termination
PsLookupProcessByProcessId	high	Potentially dangerous - could be used for privilege escalation or security bypass
MmGetSystemRoutineAddress	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
ZwWriteFile	medium	Moderate risk - system modification capability
ObReferenceObjectByHandle	medium	Moderate risk - system modification capability
KeBugCheckEx	medium	Moderate risk - system modification capability
ZwOpenFile	low	Standard kernel API - generally benign
IoDeleteDevice	low	Standard kernel API - generally benign
IoCreateSymbolicLink	low	Standard kernel API - generally benign
IofCompleteRequest	low	Standard kernel API - generally benign
KeSetEvent	low	Standard kernel API - generally benign
DbgPrint	low	Standard kernel API - generally benign
ZwReadFile	low	Standard kernel API - generally benign
ZwOpenKey	low	Standard kernel API - generally benign
IoDeleteSymbolicLink	low	Standard kernel API - generally benign
ExAllocatePoolWithTag	low	Standard kernel API - generally benign
ZwQueryValueKey	low	Standard kernel API - generally benign
KeDelayExecutionThread	low	Standard kernel API - generally benign
KeInitializeEvent	low	Standard kernel API - generally benign
IoCreateDevice	low	Standard kernel API - generally benign
ZwClose	low	Standard kernel API - generally benign
RtlInitUnicodeString	low	Standard kernel API - generally benign
ProbeForRead	low	Standard kernel API - generally benign
KeWaitForSingleObject	low	Standard kernel API - generally benign

IOCTL dispatch codes (27)

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
0x0022E403	high	METHOD_NEITHER	FILE_DEVICE_UNKNOWN Function #2304
0x0080818B	high	METHOD_NEITHER	FILE_DEVICE_CUSTOM Function #98
0x00808D8B	high	METHOD_NEITHER	FILE_DEVICE_CUSTOM Function #866
0x0080840F	high	METHOD_NEITHER	FILE_DEVICE_CUSTOM Function #259
0x0080A58B	high	METHOD_NEITHER	FILE_DEVICE_CUSTOM Function #2402
0x00340043	high	METHOD_NEITHER	FILE_DEVICE_DISK Function #16
0x0022341F	high	METHOD_NEITHER	FILE_DEVICE_UNKNOWN Function #3335
0x00223423	high	METHOD_NEITHER	FILE_DEVICE_UNKNOWN Function #3336
0x002200F0	medium	METHOD_BUFFERED	FILE_DEVICE_UNKNOWN Function #60
0x0080248C	medium	METHOD_BUFFERED	FILE_DEVICE_CUSTOM Function #2339
0x008024A4	medium	METHOD_BUFFERED	FILE_DEVICE_CUSTOM Function #2345
0x00802484	medium	METHOD_BUFFERED	FILE_DEVICE_CUSTOM Function #2337
0x00802494	medium	METHOD_BUFFERED	FILE_DEVICE_CUSTOM Function #2341
0x0080E918	medium	METHOD_BUFFERED	FILE_DEVICE_CUSTOM Function #2630
0x008024BC	medium	METHOD_BUFFERED	FILE_DEVICE_CUSTOM Function #2351
0x0080249C	medium	METHOD_BUFFERED	FILE_DEVICE_CUSTOM Function #2343
0x0080C3E8	medium	METHOD_BUFFERED	FILE_DEVICE_CUSTOM Function #250
0x00804B15	medium	METHOD_IN_DIRECT	FILE_DEVICE_CUSTOM Function #709
0x00340045	medium	METHOD_IN_DIRECT	FILE_DEVICE_DISK Function #17
0x0034002D	medium	METHOD_IN_DIRECT	FILE_DEVICE_DISK Function #11
0x00340030	medium	METHOD_BUFFERED	FILE_DEVICE_DISK Function #12
0x00340034	medium	METHOD_BUFFERED	FILE_DEVICE_DISK Function #13
0x00340062	medium	METHOD_OUT_DIRECT	FILE_DEVICE_DISK Function #24
0x00223419	medium	METHOD_IN_DIRECT	FILE_DEVICE_UNKNOWN Function #3334

Showing 24 of 27 extracted control codes.

PE sections

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	0x15A7E	0x15C00	6.39	CODE, EXEC, READ
.rdata	0x32E8	0x3400	4.96	IDATA, READ
.data	0x0B38	0x0200	0.71	IDATA, READ, WRITE
.pdata	0x0ABC	0x0C00	4.62	IDATA, READ
INIT	0x14E6	0x1600	5.72	CODE, EXEC, READ, WRITE, DISCARD
.rsrc	0x03E0	0x0400	3.24	IDATA, READ, DISCARD
.reloc	0x027C	0x0400	2.53	IDATA, READ, DISCARD

Exploit mitigations

Control Flow Guard	Not enabled
ASLR	Not enabled
DEP	Not enabled
Integrity check	Not enforced
Mitigation score	5 / 100

• No CFG - Control Flow Guard is not enabled. Indirect call targets are not validated, making the driver susceptible to control flow hijacking via corrupted function pointers or vtables.
• No ASLR - ASLR is disabled. The driver loads at a predictable address, enabling reliable exploitation of memory corruption vulnerabilities.
• No DEP - DEP is disabled. Data pages are executable, allowing shellcode execution from stack/heap buffers.
• Expired Certificate - The driver is signed but the certificate has expired. Windows may still load it depending on revocation policy.

MITRE ATT&CK techniques (13)

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
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	Impair Defenses: Disable/Modify Tools	Defense Evasion
T1569.002	Service Execution	Execution
T1652	Device Driver Discovery	Discovery

Code-signing chain

Signer	Microsoft Windows Hardware Compatibility Publisher
Signer organisation	Microsoft Corporation
Issuer	Microsoft Windows Third Party Component CA 2014
Serial	33000000319479A318F5522D06000000000031
Valid from	2019-06-05 18:34 UTC
Valid until	2020-06-03 18:34 UTC (expired)
Signature validity	Not verified

• Certificate revision: 0x0200
• Certificate type: PKCS#7
• Chain: Microsoft Windows Third Party Component CA 2014

Symbolic execution

Engine angr, status completed, 100 paths explored at a maximum depth of 100. Vulnerability classes reached: 0. Exploitable paths: 0.

Frequently asked questions about SkyAMDrv.sys

Is SkyAMDrv.sys safe?

Based on DriverShield static and dynamic analysis, SkyAMDrv.sys shows some suspicious signals and warrants manual review. Its composite risk score is 33/100 (verdict: suspicious). Always validate findings independently before acting.

What is the risk score of SkyAMDrv.sys?

SkyAMDrv.sys has a DriverShield composite risk score of 33/100, placing it in the suspicious verdict band. SHA256: f6062c330026c3bff7b9b81f7c0e0c6aef0b0a144b166cbea2844714034b9b28.

What is SkyAMDrv.sys?

SkyAMDrv.sys is a Windows kernel-mode driver (.sys) analyzed by DriverShield for vulnerabilities, BYOVD abuse potential, and malware indicators. It is code-signed by Microsoft Windows Hardware Compatibility Publisher.

Related: Other drivers signed by Microsoft Windows Hardware Compatibility Publisher · What an IOCTL dispatch code is · BYOVD research index · full driver database · CVE library · code signing atlas

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