hidir.sys - Suspicious (58/100) - DriverShield Analysis

Analysis of hidir.sys: suspicious verdict, risk score 58/100. 0 YARA matches. SHA256 6089305af73cc584. Kernel imports, IOCTL codes, MITRE ATT&CK, and code-signing details.

hidir.sys - Analysis Report

DriverShield analyzed the Windows kernel driver hidir.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
File size	48640 bytes
Analyzed	2026-03-22
SHA256	6089305af73cc584963865482448cd5ca4252ec9bd3e72af16d45e4f95c3ebf2
SHA1	39f0d73ea792ed8547ea7dc45f8d56d921ee441a
MD5	6b46e3061ec0523cb46ed28060fcd946

Driver identity

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

File description	Infrared Miniport Driver for Input Devices
Product	Microsoft® Windows® Operating System
Company	Microsoft Corporation
Original filename	HIDIR.SYS
Internal name	HIDIR.SYS
File version	10.0.19041.1 (WinBuild.160101.0800)
Copyright	© Microsoft Corporation. All rights reserved.

How the 58/100 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	27 / 100
Known-vulnerable corpus	0 / 100
Code-signing state	50 / 100
Packing and entropy	0 / 100
Dynamic behaviour	0 / 100
CVE cross-reference	0 / 100

Kernel imports (15)

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

API	Risk	Why it matters
MmMapLockedPagesSpecifyCache	critical	Highly dangerous - potential for arbitrary code execution, memory corruption, or process termination
MmMapLockedPages	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
ZwSetValueKey	medium	Moderate risk - system modification capability
ExFreePool	low	Standard kernel API - generally benign
RtlInitUnicodeString	low	Standard kernel API - generally benign
KeSetEvent	low	Standard kernel API - generally benign
IofCompleteRequest	low	Standard kernel API - generally benign
ExAllocatePoolWithTag	low	Standard kernel API - generally benign
KeInitializeEvent	low	Standard kernel API - generally benign
ZwOpenKey	low	Standard kernel API - generally benign
ZwQueryValueKey	low	Standard kernel API - generally benign
ZwClose	low	Standard kernel API - generally benign
IoBuildDeviceIoControlRequest	low	Standard kernel API - generally benign
KeWaitForSingleObject	low	Standard kernel API - generally benign

IOCTL dispatch codes (9)

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
0x0080840F	high	METHOD_NEITHER	FILE_DEVICE_CUSTOM Function #259
0x002200F0	medium	METHOD_BUFFERED	FILE_DEVICE_UNKNOWN Function #60
0x0080A989	medium	METHOD_IN_DIRECT	FILE_DEVICE_CUSTOM Function #2658
0x00349F05	medium	METHOD_IN_DIRECT	FILE_DEVICE_DISK Function #1985
0x0080EC81	medium	METHOD_IN_DIRECT	FILE_DEVICE_CUSTOM Function #2848
0x00222705	medium	METHOD_IN_DIRECT	FILE_DEVICE_UNKNOWN Function #2497
0x00220100	medium	METHOD_BUFFERED	FILE_DEVICE_UNKNOWN Function #64
0x0080B854	medium	METHOD_BUFFERED	FILE_DEVICE_CUSTOM Function #3605
0x003403AC	medium	METHOD_BUFFERED	FILE_DEVICE_DISK Function #235

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	0x5269	0x5400	6.39	CODE, EXEC, READ
.rdata	0x0F28	0x1000	4.59	IDATA, READ
.data	0x0148	0x0200	0.46	IDATA, READ, WRITE
.pdata	0x03F0	0x0400	4.36	IDATA, READ
.idata	0x074A	0x0800	4.25	IDATA, READ
PAGE	0x371E	0x3800	6.24	CODE, EXEC, READ
INIT	0x0382	0x0400	5.58	CODE, EXEC, READ, DISCARD
GFIDS	0x003C	0x0200	0.55	IDATA, READ, DISCARD
.rsrc	0x0420	0x0600	2.48	IDATA, READ, DISCARD
.reloc	0x0380	0x0400	4.54	IDATA, READ, DISCARD

Exploit mitigations

Control Flow Guard	Enabled
ASLR	Enabled
DEP	Enabled
Integrity check	Not enforced
Mitigation score	80 / 100

CFG Enabled - Control Flow Guard is active - indirect calls are validated against a bitmap of valid targets at runtime.
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.
Unsigned - The driver is not digitally signed. It requires test signing mode or a bootloader exploit to load on 64-bit Windows.

MITRE ATT&CK techniques (8)

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
T1211	Exploitation for Defense Evasion	Defense Evasion
T1543.003	Windows Service	Persistence
T1553.002	Subvert Trust Controls: Code Signing	Defense Evasion
T1553.006	Code Signing Policy Modification	Defense Evasion
T1652	Device Driver Discovery	Discovery

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 hidir.sys

Is hidir.sys safe?

Based on DriverShield static and dynamic analysis, hidir.sys shows some suspicious signals and warrants manual review. Its composite risk score is 58/100 (verdict: suspicious). Always validate findings independently before acting.

What is the risk score of hidir.sys?

hidir.sys has a DriverShield composite risk score of 58/100, placing it in the suspicious verdict band. SHA256: 6089305af73cc584963865482448cd5ca4252ec9bd3e72af16d45e4f95c3ebf2.

What is hidir.sys?

hidir.sys is a Windows kernel-mode driver (.sys) analyzed by DriverShield for vulnerabilities, BYOVD abuse potential, and malware indicators.