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

Analysis of UsbPmApi.sys: suspicious verdict, risk score 58/100. 0 YARA matches. SHA256 e0536a54727af495. Kernel imports, IOCTL codes, MITRE ATT&CK, and code-signing details.

UsbPmApi.sys - Analysis Report

DriverShield analyzed the Windows kernel driver UsbPmApi.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	53248 bytes
Analyzed	2026-03-22
SHA256	e0536a54727af49546cc8b9c0bc189fbfa989459f09b7c8f2ffeac051b891713
SHA1	076a2ef9653339e74ac4fde2d2e641b828388437
MD5	19e427ef71b7506f3b47e58283484004

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	39 / 100
IOCTL dispatch surface	75 / 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 (9)

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

API	Risk	Why it matters
MmGetSystemRoutineAddress	high	Potentially dangerous - could be used for privilege escalation or security bypass
RtlInitUnicodeString	low	Standard kernel API - generally benign
ExFreePool	low	Standard kernel API - generally benign
KeSetEvent	low	Standard kernel API - generally benign
ZwCreateFile	low	Standard kernel API - generally benign
ZwClose	low	Standard kernel API - generally benign
KeInitializeEvent	low	Standard kernel API - generally benign
ExAllocatePoolWithTag	low	Standard kernel API - generally benign
KeWaitForSingleObject	low	Standard kernel API - generally benign

IOCTL dispatch codes (10)

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
0x00223423	high	METHOD_NEITHER	FILE_DEVICE_UNKNOWN Function #3336
0x0080248C	medium	METHOD_BUFFERED	FILE_DEVICE_CUSTOM Function #2339
0x0022B941	medium	METHOD_IN_DIRECT	FILE_DEVICE_UNKNOWN Function #3664
0x0080FF0D	medium	METHOD_IN_DIRECT	FILE_DEVICE_CUSTOM Function #4035
0x00803F05	medium	METHOD_IN_DIRECT	FILE_DEVICE_CUSTOM Function #4033
0x0080249C	medium	METHOD_BUFFERED	FILE_DEVICE_CUSTOM Function #2343
0x00802F35	medium	METHOD_IN_DIRECT	FILE_DEVICE_CUSTOM Function #3021
0x00802484	medium	METHOD_BUFFERED	FILE_DEVICE_CUSTOM Function #2337
0x00220005	medium	METHOD_IN_DIRECT	FILE_DEVICE_UNKNOWN Function #1

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	0x8BEA	0x8C00	6.1	CODE, EXEC, READ
.rdata	0x14B0	0x1600	4.08	IDATA, READ
.data	0x0418	0x0200	0.49	IDATA, READ, WRITE
.pdata	0x08F4	0x0A00	4.11	IDATA, READ
.idata	0x0652	0x0800	3.79	IDATA, READ
PAGE	0x0831	0x0A00	5.44	CODE, EXEC, READ
.edata	0x0164	0x0200	3.81	IDATA, READ
INIT	0x0072	0x0200	1.68	CODE, EXEC, READ, DISCARD
GFIDS	0x017C	0x0200	2.55	IDATA, READ, DISCARD
.reloc	0x0490	0x0600	4.6	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 (6)

Techniques this driver could enable if loaded by an adversary.

ID	Technique	Tactic
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: 0. Exploitable paths: 1.

Frequently asked questions about UsbPmApi.sys

Is UsbPmApi.sys safe?

Based on DriverShield static and dynamic analysis, UsbPmApi.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 UsbPmApi.sys?

UsbPmApi.sys has a DriverShield composite risk score of 58/100, placing it in the suspicious verdict band. SHA256: e0536a54727af49546cc8b9c0bc189fbfa989459f09b7c8f2ffeac051b891713.

What is UsbPmApi.sys?

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