amdacpksd.sys - Suspicious (35/100) - DriverShield Analysis

Analysis of amdacpksd.sys: suspicious verdict, risk score 35/100. 1 YARA match, 0/76 multi-engine detections. SHA256 5d3ea6f92c28846a. Kernel imports, IOCTL codes, MITRE ATT&CK, and code-signing details.

amdacpksd.sys - Analysis Report

DriverShield analyzed the Windows kernel driver amdacpksd.sys and assigned a verdict of Suspicious with a composite risk score of 35/100, indicating some risk signals warranting review (30-59 band).

Verdict	Suspicious (35/100)
YARA matches	1
Multi-engine detections	0 / 76
File size	242184 bytes
Code-signing signer	Advanced Micro Devices, Inc.
Analyzed	2026-10-10
SHA256	5d3ea6f92c28846aff85931ba3c2b7cc6d6f10e7204dea9c3ce30ef9f7355d6c
SHA1	9d1a7823099035d04c97247aa7b7a7d16e909b6f
MD5	9cfb79d781a8ab07e9b666d4231c8636

How the 35/100 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	5 / 100
Dangerous kernel imports	100 / 100
IOCTL dispatch surface	96 / 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 amdacpksd.sys, ranked by exploitation relevance.

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

IOCTL dispatch codes (32)

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
0x008045C7	high	METHOD_NEITHER	FILE_DEVICE_CUSTOM Function #369
0x0080850F	high	METHOD_NEITHER	FILE_DEVICE_CUSTOM Function #323
0x00228303	high	METHOD_NEITHER	FILE_DEVICE_UNKNOWN Function #192
0x0080BA0B	high	METHOD_NEITHER	FILE_DEVICE_CUSTOM Function #3714
0x0080858B	high	METHOD_NEITHER	FILE_DEVICE_CUSTOM Function #354
0x0034BAC3	high	METHOD_NEITHER	FILE_DEVICE_DISK Function #3760
0x0022341B	high	METHOD_NEITHER	FILE_DEVICE_UNKNOWN Function #3334
0x0034011B	high	METHOD_NEITHER	FILE_DEVICE_DISK Function #70
0x002215FF	high	METHOD_NEITHER	FILE_DEVICE_UNKNOWN Function #1407
0x002200F0	medium	METHOD_BUFFERED	FILE_DEVICE_UNKNOWN Function #60
0x00802824	medium	METHOD_BUFFERED	FILE_DEVICE_CUSTOM Function #2569
0x0080EC81	medium	METHOD_IN_DIRECT	FILE_DEVICE_CUSTOM Function #2848
0x00802494	medium	METHOD_BUFFERED	FILE_DEVICE_CUSTOM Function #2341
0x008024A4	medium	METHOD_BUFFERED	FILE_DEVICE_CUSTOM Function #2345
0x0080EFE8	medium	METHOD_BUFFERED	FILE_DEVICE_CUSTOM Function #3066
0x0080249C	medium	METHOD_BUFFERED	FILE_DEVICE_CUSTOM Function #2343
0x00809189	medium	METHOD_IN_DIRECT	FILE_DEVICE_CUSTOM Function #1122
0x0080453C	medium	METHOD_BUFFERED	FILE_DEVICE_CUSTOM Function #335
0x0080450C	medium	METHOD_BUFFERED	FILE_DEVICE_CUSTOM Function #323
0x00802484	medium	METHOD_BUFFERED	FILE_DEVICE_CUSTOM Function #2337
0x00807F15	medium	METHOD_IN_DIRECT	FILE_DEVICE_CUSTOM Function #4037
0x00806315	medium	METHOD_IN_DIRECT	FILE_DEVICE_CUSTOM Function #2245
0x00804F0D	medium	METHOD_IN_DIRECT	FILE_DEVICE_CUSTOM Function #963
0x00807B0D	medium	METHOD_IN_DIRECT	FILE_DEVICE_CUSTOM Function #3779

Showing 24 of 32 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	0x1E7E9	0x1E800	6.43	CODE, EXEC, READ
.text;_P	0x0030	0x0200	0.77	CODE, EXEC, READ
.rdata	0xC82C	0xCA00	4.85	IDATA, READ
.data	0x06F4	0x0800	1.29	IDATA, READ, WRITE
.pdata	0x0DC8	0x0E00	5.3	IDATA, READ
PAGE	0x361C	0x3800	6.12	CODE, EXEC, READ
INIT	0x1E9E	0x2000	6.18	CODE, EXEC, READ, DISCARD
.rsrc	0x0010	0x0200	0	IDATA, READ, DISCARD
.reloc	0x004C	0x0200	1.02	IDATA, READ, DISCARD

Exploit mitigations

Control Flow Guard	Not enabled
ASLR	Enabled
DEP	Enabled
Integrity check	Not enforced
Mitigation score	55 / 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.
• ASLR Enabled - Address Space Layout Randomization is active - base address is randomized on each load.
• DEP/NX Enabled - Data Execution Prevention is active - non-executable pages cannot be executed.
• Expired Certificate - The driver is signed but the certificate has expired. Windows may still load it depending on revocation policy.

YARA rule matches (1)

Rule	Severity	Detects
SUSP_Callbacks	medium	Kernel callback registration

MITRE ATT&CK techniques (14)

Techniques this driver could enable if loaded by an adversary.

ID	Technique	Tactic
T1003.001	OS Credential Dumping: LSASS Memory	Credential Access
T1014	Rootkit	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
T1543.003	Windows Service	Persistence
T1547.001	Registry Run Keys	Persistence
T1553.002	Subvert Trust Controls: Code Signing	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

Code-signing chain

Signer	Advanced Micro Devices, Inc.
Signer organisation	Advanced Micro Devices, Inc.
Issuer	DigiCert Assured ID Code Signing CA-1
Serial	7EC0CF3D333673B2602D410FE0C4D21
Valid from	2019-07-10 00:00 UTC
Valid until	2022-07-14 12:00 UTC (expired)
Signature validity	Not verified

• Certificate revision: 0x0200
• Certificate type: PKCS#7
• Chain: DigiCert Assured ID Root CA
• Chain: DigiCert Timestamp Responder
• Chain: DigiCert Assured ID Code Signing CA-1
• Chain: DigiCert Assured ID CA-1

Symbolic execution

Engine angr, status static_approximation, 0 paths explored at a maximum depth of 0. Vulnerability classes reached: 1. Exploitable paths: 0.

Frequently asked questions about amdacpksd.sys

Is amdacpksd.sys safe?

Based on DriverShield static and dynamic analysis, amdacpksd.sys shows some suspicious signals and warrants manual review. Its composite risk score is 35/100 (verdict: suspicious). Always validate findings independently before acting.

What is the risk score of amdacpksd.sys?

amdacpksd.sys has a DriverShield composite risk score of 35/100, placing it in the suspicious verdict band. SHA256: 5d3ea6f92c28846aff85931ba3c2b7cc6d6f10e7204dea9c3ce30ef9f7355d6c.

What is amdacpksd.sys?

amdacpksd.sys is a Windows kernel-mode driver (.sys) analyzed by DriverShield for vulnerabilities, BYOVD abuse potential, and malware indicators. It is code-signed by Advanced Micro Devices, Inc..

Related: Other drivers signed by Advanced Micro Devices, Inc. · What an IOCTL dispatch code is · How YARA matching feeds the score · BYOVD research index · full driver database · CVE library · code signing atlas

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