rentdrv2_x32.sys - Vulnerable (78/100) - DriverShield Analysis

Analysis of rentdrv2_x32.sys: vulnerable verdict, risk score 78/100. 2 YARA matches, 28/76 multi-engine detections. SHA256 1aed62a63b4802e5. Kernel imports, IOCTL codes, MITRE ATT&CK, and code-signing details.

rentdrv2_x32.sys - Analysis Report

DriverShield analyzed the Windows kernel driver rentdrv2_x32.sys and assigned a verdict of Vulnerable with a composite risk score of 78/100, indicating a known or likely vulnerability surface (60-79 band).

Verdict	Vulnerable (78/100)
YARA matches	2
Multi-engine detections	28 / 76
File size	41152 bytes
Code-signing signer	DigiCert Assured ID Root CA
Analyzed	2026-09-06
SHA256	1aed62a63b4802e599bbd33162319129501d603cceeb5e1eb22fd4733b3018a3
SHA1	8a0d8b31fc2cdc44cb5a8547b7a63600307dd2d4
MD5	1585d3eda733dfe42202bb98f95f7f5d

How the 78/100 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	100 / 100
Dangerous kernel imports	100 / 100
IOCTL dispatch surface	6 / 100
Known-vulnerable corpus	100 / 100
Code-signing state	80 / 100
Packing and entropy	0 / 100
Dynamic behaviour	0 / 100
CVE cross-reference	0 / 100

Kernel imports (20)

Kernel-mode APIs resolved from the Import Address Table of rentdrv2_x32.sys, ranked by exploitation relevance.

API	Risk	Why it matters
ZwTerminateProcess	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
ZwOpenProcess	high	Potentially dangerous - could be used for privilege escalation or security bypass
ZwWriteFile	medium	Moderate risk - system modification capability
ObOpenObjectByPointer	medium	Moderate risk - system modification capability
ObReferenceObjectByHandle	medium	Moderate risk - system modification capability
IoCreateDevice	low	Standard kernel API - generally benign
ExAllocatePoolWithTag	low	Standard kernel API - generally benign
RtlInitUnicodeString	low	Standard kernel API - generally benign
KeWaitForSingleObject	low	Standard kernel API - generally benign
IoCreateSymbolicLink	low	Standard kernel API - generally benign
ZwClose	low	Standard kernel API - generally benign
IoDeleteDevice	low	Standard kernel API - generally benign
IoDeleteSymbolicLink	low	Standard kernel API - generally benign
DbgPrint	low	Standard kernel API - generally benign
KeSetEvent	low	Standard kernel API - generally benign
ExAllocatePool	low	Standard kernel API - generally benign
IofCompleteRequest	low	Standard kernel API - generally benign
KeInitializeEvent	low	Standard kernel API - generally benign
ZwCreateFile	low	Standard kernel API - generally benign

IOCTL dispatch codes (2)

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
0x00341C68	medium	METHOD_BUFFERED	FILE_DEVICE_DISK Function #1818
0x00224C06	medium	METHOD_OUT_DIRECT	FILE_DEVICE_UNKNOWN Function #769

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	0x1D50	0x1E00	6.21	CODE, EXEC, READ
.rdata	0x07D4	0x0800	4.88	IDATA, READ
.data	0x2028	0x0200	0.08	IDATA, READ, WRITE
INIT	0x0644	0x0800	4.53	CODE, EXEC, READ, WRITE, DISCARD
.reloc	0x036A	0x0400	4.47	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.

YARA rule matches (2)

Rule	Severity	Detects
BYOVD_ProcKill	critical	Process termination EDR killer
MAL_EDRKiller	critical	Generic EDR killer pattern

MITRE ATT&CK techniques (10)

Techniques this driver could enable if loaded by an adversary.

ID	Technique	Tactic
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	Disable/Modify Tools	Defense Evasion
T1569.002	Service Execution	Execution
T1652	Device Driver Discovery	Discovery

Code-signing chain

Signer	DigiCert Assured ID Root CA
Signer organisation	DigiCert Inc
Issuer	Microsoft Code Verification Root
Serial	611CB28A000000000026
Valid from	2011-04-15 19:41 UTC
Valid until	2021-04-15 19:51 UTC (expired)
Signature validity	Not verified

Certificate revision: 0x0200
Certificate type: PKCS#7
Chain: Hangzhou Shunwang Technology Co.,Ltd
Chain: DigiCert Timestamp Responder
Chain: DigiCert Assured ID Code Signing CA-1
Chain: DigiCert Assured ID CA-1

Symbolic execution

Engine angr, status completed, 2 paths explored at a maximum depth of 2. Vulnerability classes reached: 0. Exploitable paths: 1.

Corpus match: this hash is present in the known-vulnerable driver corpus DriverShield cross-references during analysis, which is why the score carries a full weighting on that component.

Frequently asked questions about rentdrv2_x32.sys

Is rentdrv2_x32.sys safe?

Based on DriverShield static and dynamic analysis, rentdrv2_x32.sys is flagged as vulnerable and is a potential Bring Your Own Vulnerable Driver (BYOVD) risk. Its composite risk score is 78/100 (verdict: vulnerable). Always validate findings independently before acting.

What is the risk score of rentdrv2_x32.sys?

rentdrv2_x32.sys has a DriverShield composite risk score of 78/100, placing it in the vulnerable verdict band. SHA256: 1aed62a63b4802e599bbd33162319129501d603cceeb5e1eb22fd4733b3018a3.

What is rentdrv2_x32.sys?

rentdrv2_x32.sys is a Windows kernel-mode driver (.sys) analyzed by DriverShield for vulnerabilities, BYOVD abuse potential, and malware indicators. It is code-signed by DigiCert Assured ID Root CA.