What is wdboot.sys?

wdboot.sys is part of Microsoft® Windows® Operating System and developed by Microsoft Corporation according to the wdboot.sys version information.

wdboot.sys's description is "Microsoft antimalware boot driver"

wdboot.sys is digitally signed by Microsoft Windows Early Launch Anti-malware Publisher.

wdboot.sys is usually located in the 'C:\WINDOWS\system32\drivers\wd\' folder.

None of the anti-virus scanners at VirusTotal reports anything malicious about wdboot.sys.

If you have additional information about the file, please share it with the FreeFixer users by posting a comment at the bottom of this page.

Vendor and version information [?]

The following is the available information on wdboot.sys:

PropertyValue
Product nameMicrosoft® Windows® Operating System
Company nameMicrosoft Corporation
File descriptionMicrosoft antimalware boot driver
Internal nameWdBoot
Original filenameWdBoot.sys
Legal copyright© Microsoft Corporation. All rights reserved.
Product version4.18.1907.4
File version4.18.1907.4 (GitEnlistment(winpbld).190709-1605)

Here's a screenshot of the file properties when displayed by Windows Explorer:

Product nameMicrosoft® Windows® Operating System
Company nameMicrosoft Corporation
File descriptionMicrosoft antimalware boot driver
Internal nameWdBoot
Original filenameWdBoot.sys
Legal copyright© Microsoft Corporation. All rights..
Product version4.18.1907.4
File version4.18.1907.4 (GitEnlistment(winpbld)...

Digital signatures [?]

wdboot.sys has a valid digital signature.

PropertyValue
Signer nameMicrosoft Windows Early Launch Anti-malware Publisher
Certificate issuer nameMicrosoft Code Signing PCA 2010
Certificate serial number33000002b3acdf0c8a8eb8fc9b0000000002b3

VirusTotal report

None of the 70 anti-virus programs at VirusTotal detected the wdboot.sys file.

None of the 70 anti-virus programs detected the wdboot.sys file.

Sandbox Report

The following information was gathered by executing the file inside Cuckoo Sandbox.

Summary

ERROR: Failed to execute process.

Generic

[
    {
        "process_path": "C:\\Windows\\System32\\lsass.exe",
        "process_name": "lsass.exe",
        "pid": 476,
        "summary": {},
        "first_seen": 1565704385.3281,
        "ppid": 376
    }
]

Signatures

[
    {
        "markcount": 1,
        "families": [],
        "description": "This executable has a PDB path",
        "severity": 1,
        "marks": [
            {
                "category": "pdb_path",
                "ioc": "WdBoot.pdb",
                "type": "ioc",
                "description": null
            }
        ],
        "references": [],
        "name": "has_pdb"
    },
    {
        "markcount": 3,
        "families": [],
        "description": "The executable contains unknown PE section names indicative of a packer (could be a false positive)",
        "severity": 1,
        "marks": [
            {
                "category": "section",
                "ioc": "PAGE",
                "type": "ioc",
                "description": null
            },
            {
                "category": "section",
                "ioc": "INIT",
                "type": "ioc",
                "description": null
            },
            {
                "category": "section",
                "ioc": "GFIDS",
                "type": "ioc",
                "description": null
            }
        ],
        "references": [],
        "name": "pe_features"
    },
    {
        "markcount": 1,
        "families": [],
        "description": "The file contains an unknown PE resource name possibly indicative of a packer",
        "severity": 1,
        "marks": [
            {
                "category": "resource name",
                "ioc": "MSELAMCERTINFOID",
                "type": "ioc",
                "description": null
            }
        ],
        "references": [],
        "name": "pe_unknown_resource_name"
    }
]

Yara

The Yara rules did not detect anything in the file.

Network

{
    "tls": [],
    "udp": [
        {
            "src": "192.168.56.101",
            "dst": "224.0.0.252",
            "offset": 710,
            "time": 1.0170550346375,
            "dport": 5355,
            "sport": 53595
        },
        {
            "src": "192.168.56.101",
            "dst": "224.0.0.252",
            "offset": 1038,
            "time": -0.09982705116272,
            "dport": 5355,
            "sport": 55314
        },
        {
            "src": "192.168.56.101",
            "dst": "239.255.255.250",
            "offset": 1366,
            "time": 1.038290977478,
            "dport": 3702,
            "sport": 49152
        }
    ],
    "dns_servers": [],
    "http": [],
    "icmp": [],
    "smtp": [],
    "tcp": [],
    "smtp_ex": [],
    "mitm": [],
    "hosts": [],
    "pcap_sha256": "d9b2af67b635640a90e171d57969bf1d10a9bba6331da72d8baa619d6bf2c9b6",
    "dns": [],
    "http_ex": [],
    "domains": [],
    "dead_hosts": [],
    "sorted_pcap_sha256": "85c5a8e3bee23c7fd78f1443bc2ed61a24a93d5d1be041eba0d4f273afe35913",
    "irc": [],
    "https_ex": []
}

Other files also named wdboot.sys

wdboot.sys (4 votes)

Hashes [?]

PropertyValue
MD55697267195b0a7dbde9cf9845de5e770
SHA25649c2402326e1d4d1a1bbe5fb7b611b1470b7dd7aed1d885f8153716577b526a7

What will you do with wdboot.sys?

To help other users, please let us know what you will do with wdboot.sys:



Malware or legitimate?

If you feel that you need more information to determine if your should keep this file or remove it, please read this guide.

Please select the option that best describe your thoughts on the information provided on this web page


Free online surveys

And now some shameless self promotion ;)

A screenshot of FreeFixer's scan result.Hi, my name is Roger Karlsson. I've been running this website since 2006. I want to let you know about the FreeFixer program. FreeFixer is a freeware tool that analyzes your system and let you manually identify unwanted programs. Once you've identified some malware files, FreeFixer is pretty good at removing them. You can download FreeFixer here. It runs on Windows 2000/XP/2003/2008/2016/2019/Vista/7/8/8.1/10. Supports both 32- and 64-bit Windows.

If you have questions, feedback on FreeFixer or the freefixer.com website, need help analyzing FreeFixer's scan result or just want to say hello, please contact me. You can find my email address at the contact page.

Comments

Please share with the other users what you think about this file. What does this file do? Is it legitimate or something that your computer is better without? Do you know how it was installed on your system? Did you install it yourself or did it come bundled with some other software? Is it running smoothly or do you get some error message? Any information that will help to document this file is welcome. Thank you for your contributions.

I'm reading all new comments so don't hesitate to post a question about the file. If I don't have the answer perhaps another user can help you.

No comments posted yet.

Leave a reply