Analysis of Diskdump.sys: clean verdict, risk score 13/100. 0 YARA matches. SHA256 77c9b3fb891e5abe. Kernel imports, IOCTL codes, MITRE ATT&CK, and code-signing details.
DriverShield analyzed the Windows kernel driver Diskdump.sys and assigned a verdict of Clean with a composite risk score of 13/100, indicating no notable risk signals (0-29 band).
| Verdict | Clean (13/100) |
| YARA matches | 0 |
| File size | 41344 bytes |
| Code-signing signer | Microsoft Windows |
| Analyzed | 2026-03-22 |
| SHA256 | 77c9b3fb891e5abec4f05b0f4c28399351a2b043bcfc2607b9cf9a30594f9ac7 |
| SHA1 | 55d16ca1898bd8f26fa024140d377ec97d26f07a |
| MD5 | cad76a8fd8a1e8f9ca26d4dc92e61eb8 |
Version resource data embedded in the Diskdump.sys PE header, as extracted by the analysis engine.
| File description | Crash Dump Disk Driver |
|---|---|
| Product | Microsoft® Windows® Operating System |
| Company | Microsoft Corporation |
| Original filename | diskdump.sys |
| Internal name | diskdump.sys |
| File version | 10.0.19041.4355 (WinBuild.160101.0800) |
| Copyright | © Microsoft Corporation. All rights reserved. |
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 | 30 / 100 |
| IOCTL dispatch surface | 27 / 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-mode APIs resolved from the Import Address Table of Diskdump.sys, ranked by exploitation relevance.
| API | Risk | Why it matters |
|---|---|---|
| HalGetBusDataByOffset | high | Potentially dangerous - could be used for privilege escalation or security bypass |
| KeBugCheckEx | medium | Moderate risk - system modification capability |
| DbgPrint | low | Standard kernel API - generally benign |
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 |
|---|---|---|---|
| 0x002200F0 | medium | METHOD_BUFFERED | FILE_DEVICE_UNKNOWN Function #60 |
| 0x00802484 | medium | METHOD_BUFFERED | FILE_DEVICE_CUSTOM Function #2337 |
| 0x0080F981 | medium | METHOD_IN_DIRECT | FILE_DEVICE_CUSTOM Function #3680 |
| 0x00809E89 | medium | METHOD_IN_DIRECT | FILE_DEVICE_CUSTOM Function #1954 |
| 0x0080B389 | medium | METHOD_IN_DIRECT | FILE_DEVICE_CUSTOM Function #3298 |
| 0x008000BA | medium | METHOD_OUT_DIRECT | FILE_DEVICE_CUSTOM Function #46 |
| 0x0080E281 | medium | METHOD_IN_DIRECT | FILE_DEVICE_CUSTOM Function #2208 |
| 0x003403A0 | medium | METHOD_BUFFERED | FILE_DEVICE_DISK Function #232 |
| 0x0034002E | medium | METHOD_OUT_DIRECT | FILE_DEVICE_DISK Function #11 |
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 | 0x3E69 | 0x4000 | 6.07 | CODE, EXEC, READ |
| .rdata | 0x0788 | 0x0800 | 4.43 | IDATA, READ |
| .data | 0x00A0 | 0x0200 | 0.28 | IDATA, READ, WRITE |
| .pdata | 0x0594 | 0x0600 | 3.82 | IDATA, READ |
| .idata | 0x0418 | 0x0600 | 3.39 | IDATA, READ |
| PAGE | 0x02F5 | 0x0400 | 5.07 | CODE, EXEC, READ |
| .edata | 0x0EC5 | 0x1000 | 4.82 | IDATA, READ |
| INIT | 0x0292 | 0x0400 | 4.55 | CODE, EXEC, READ, DISCARD |
| GFIDS | 0x01C0 | 0x0200 | 3.03 | IDATA, READ, DISCARD |
| .rsrc | 0x0408 | 0x0600 | 2.47 | IDATA, READ, DISCARD |
| .reloc | 0x0184 | 0x0200 | 3.67 | IDATA, READ, DISCARD |
| Control Flow Guard | Enabled |
|---|---|
| ASLR | Enabled |
| DEP | Enabled |
| Integrity check | Not enforced |
| Mitigation score | 85 / 100 |
Techniques this driver could enable if loaded by an adversary.
| ID | Technique | Tactic |
|---|---|---|
| T1014 | Rootkit | Defense Evasion |
| T1068 | Exploitation for Privilege Escalation | Privilege Escalation |
| T1071 | Application Layer Protocol | Command and Control |
| T1542.001 | Pre-OS Boot: System Firmware | Persistence |
| T1543.003 | Windows Service | Persistence |
| T1601 | Modify System Image | Defense Evasion |
| T1652 | Device Driver Discovery | Discovery |
| Signer | Microsoft Windows |
|---|---|
| Signer organisation | Microsoft Corporation |
| Issuer | Microsoft Windows Production PCA 2011 |
| Serial | 330000045FF3C96C1A7FF7DA1D00000000045F |
| Valid from | 2023-11-16 19:20 UTC |
| Valid until | 2024-11-14 19:20 UTC (expired) |
| Signature validity | Not verified |
Engine angr, status no_findings, 0 paths explored at a maximum depth of 0. Vulnerability classes reached: 0. Exploitable paths: 0.
Based on DriverShield static and dynamic analysis, Diskdump.sys is assessed as clean, with no notable risk signals. Its composite risk score is 13/100 (verdict: clean). Always validate findings independently before acting.
Diskdump.sys has a DriverShield composite risk score of 13/100, placing it in the clean verdict band. SHA256: 77c9b3fb891e5abec4f05b0f4c28399351a2b043bcfc2607b9cf9a30594f9ac7.
Diskdump.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.
Related: Other drivers signed by Microsoft Windows · What an IOCTL dispatch code is · BYOVD research index · full driver database · CVE library · code signing atlas