The WdAiNisDrv.sys (Microsoft Defender Network inspection driver for AI) File Analysis

Updated 2 hours ago

Checked by Malware Check

WdAiNisDrv.sys

Technical Analysis

File Name	WdAiNisDrv.sys
File Type	PE32+ executable (native) x86-64, for MS Windows
Scanner Version	1.0.258.174
Database Version	2026-11-01 12:07:03 UTC

✓

Clean File

No threats detected by our scanner

Detection Rate

51,224

File Size (bytes)

2026-11-01

Analysis Date

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File Identification

Hash Type	Value	Action
MD5	40766fec1005fc169325962bfbb7cba5
SHA1	9dad15615b8c494dcdfe71945126ac213baf8d3a
SHA256	b656118c62e331f80d197bcfbcb08c57bb78cb505121ff23f10a10c9eeb803c2
SHA512	019335ad99cefa4886322e7db4fcdf4d095ee34defc869d84c48564d34685852c8f177af1532b7469496ff6f04bc97ad337b4230b0b8cc2794ba050c29656fb8
ImpHash	d78e68a935274514a5afafcba63f8e19

PE Analysis

Basic Information

▼

Image Base	`0x140000000`
Entry Point	`0x14000b000`
Compilation Time	2004-07-05 11:02:58
Checksum	0x0000fc69 (Actual: 0x0000fc69)
OS Version	10.0
PEiD Signatures	`PE32+ executable (native) x86-64, for MS Windows`
PDB Path	`WdAiNisDrv.pdb`
Digital Signature	OK
Imports	4 libraries ntoskrnl, fwpkclnt, FLTMGR, NETIO
Exports	0 functions
Resources	1 Resources
Sections	8 Sections

Version Information

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CompanyName	Microsoft Corporation
FileDescription	Microsoft Defender Network inspection driver for AI
InternalName	WdAiNisDrv
LegalCopyright	© Microsoft Corporation. All rights reserved.
OriginalFilename	WdAiNisDrv.sys
ProductName	Microsoft® Windows® Operating System
FileVersion	4.18.26100.4 (79b015c6fabb20b1ccd067f376e490f0bac19809)
ProductVersion	4.18.26100.4
Translation	0x0409 0x04b0

PE Sections

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Name	Virtual Address	Virtual Size	Raw Size	Entropy	Characteristics	MD5
`.text`	`0x00001000`	7,815 bytes	8,192 bytes	5.99 (Normal)	`IMAGE_SCN_CNT_CODE\|IMAGE_SCN_MEM_NOT_PAGED\|IMAGE_SCN_MEM_EXECUTE\|IMAGE_SCN_MEM_READ`	`8B4FCAEDB832F06AD489720CD8F0D683`
`.rdata`	`0x00003000`	5,012 bytes	5,120 bytes	4.02 (Normal)	`IMAGE_SCN_CNT_INITIALIZED_DATA\|IMAGE_SCN_MEM_NOT_PAGED\|IMAGE_SCN_MEM_READ`	`F41CE3569575D5379BD415F118E95F49`
`.data`	`0x00005000`	1,164 bytes	1,024 bytes	1.29 (Normal)	`IMAGE_SCN_CNT_INITIALIZED_DATA\|IMAGE_SCN_MEM_NOT_PAGED\|IMAGE_SCN_MEM_READ\|IMAGE_SCN_MEM_WRITE`	`2B61A03B9A11AB5629BE270C58CD3F12`
`.pdata`	`0x00006000`	1,236 bytes	2,048 bytes	2.86 (Normal)	`IMAGE_SCN_CNT_INITIALIZED_DATA\|IMAGE_SCN_MEM_NOT_PAGED\|IMAGE_SCN_MEM_READ`	`6E3FEAEB6F176FF9FAB96FDB40118587`
`PAGE`	`0x00007000`	12,723 bytes	13,312 bytes	6.16 (Normal)	`IMAGE_SCN_CNT_CODE\|IMAGE_SCN_MEM_EXECUTE\|IMAGE_SCN_MEM_READ`	`B0A60CF1F9484C873E54BF0BCBD5A59B`
`INIT`	`0x0000b000`	5,798 bytes	6,144 bytes	5.80 (Normal)	`IMAGE_SCN_CNT_CODE\|IMAGE_SCN_MEM_DISCARDABLE\|IMAGE_SCN_MEM_EXECUTE\|IMAGE_SCN_MEM_READ`	`7BBD30C6AEDA82F4D80B541F5F4E070D`
`.rsrc`	`0x0000d000`	1,112 bytes	2,048 bytes	2.10 (Normal)	`IMAGE_SCN_CNT_INITIALIZED_DATA\|IMAGE_SCN_MEM_DISCARDABLE\|IMAGE_SCN_MEM_READ`	`621B4137B89744CFD32F154DF6CC899F`
`.reloc`	`0x0000e000`	1,136 bytes	2,048 bytes	3.65 (Normal)	`IMAGE_SCN_CNT_INITIALIZED_DATA\|IMAGE_SCN_MEM_DISCARDABLE\|IMAGE_SCN_MEM_READ`	`75A3ABCBE01D3A03B0156251898A5D94`

Resource Analysis

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Total Resources: 1 (1,012 bytes)

Resource Type	Count	Total Size	Percentage
RT_VERSION	1	1,012 bytes	100%

Certificate Chain Analysis

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Certificate Information

Product	Microsoft® Windows® Operating System
Description	Microsoft Defender Network inspection driver for AI
File Version	4.18.26100.4 (79b015c6fabb20b1ccd067f376e490f0bac19809)
Original Name	WdAiNisDrv.sys
Signing Date	01:47 AM 10/09/2026 (23 days ago)
Verification Status	Signed
Signers	Microsoft Windows; Windows Production PCA 2023; Microsoft Root Certificate Authority 2010
Counter Signers	Microsoft Time-Stamp Service; Microsoft Time-Stamp PCA 2010; Microsoft Root Certificate Authority 2010
Internal Name	WdAiNisDrv
Copyright	© Microsoft Corporation. All rights reserved.

Certificate Chain Summary

Microsoft Windows #1 Primary

Validity Period: 2026-04-30 18:39:34 → 2027-04-29 18:39:34

Signature Algorithm: sha384RSA

Serial Number: 33 00 00 01 24 5D A2 91 71 E0 20 95 AA 00 00 00 00 01 24

Windows Production PCA 2023 #2 Chain

Validity Period: 2023-06-13 18:34:15 → 2035-06-13 18:44:15

Signature Algorithm: sha384RSA

Serial Number: 33 00 00 00 17 85 BD 56 09 4B F8 C8 21 00 00 00 00 00 17

Microsoft Time-Stamp Service #3 Chain

Validity Period: 2026-02-19 19:39:57 → 2027-05-17 19:39:57

Signature Algorithm: sha256RSA

Serial Number: 33 00 00 02 23 4F D9 60 24 53 CF FE 2B 00 01 00 00 02 23

Microsoft Time-Stamp PCA 2010 #4 Chain

Validity Period: 2021-09-30 18:22:25 → 2030-09-30 18:32:25

Signature Algorithm: sha256RSA

Serial Number: 33 00 00 00 15 C5 E7 6B 9E 02 9B 49 99 00 00 00 00 00 15

✓ This file has been digitally signed and the certificate chain has been verified

The signature ensures file integrity and authenticity from the publisher
Timestamping proves when the signature was applied

Certificate Verification Status

Remember: This is Result of Online Virus Scanner

Gridinsoft Anti-Malware has a much more powerful virus scanning engine. We recommend using it for a more precise diagnosis of infected systems. This brief guide will help you install our flagship product for more accurate diagnostics:

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Keep Your System Protected

This file appears clean, but regular security maintenance is important

1
Weekly Quick Scans: Set a reminder to run a scan every Sunday. Most infections are caught within the first week, so regular checks give you peace of mind.
2
Update Everything: Those annoying update popups exist for a reason — they patch security holes. Windows, browsers, Adobe, Java — keep them all current.
3
Download Smart: Stick to official websites and app stores. If a "free" version of paid software sounds too good to be true, it probably comes with unwanted extras.
4
Think Before You Click: Malware loves email attachments and "urgent" links. Even if an email looks like it's from your bank or a friend, verify suspicious requests through a different channel.

Proactive Protection

This file looks clean right now, but that doesn't mean you should let your guard down. New malware appears daily, and even legit files can be compromised after download. When in doubt, verify the source and check for a digital signature.

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