Submit a file for malware analysis

Microsoft security researchers analyze suspicious files to determine if they are threats, unwanted applications, or normal files. Submit files you think are malware or files that you believe have been incorrectly classified as malware. For more information, read the submission guidelines.

Submit file as a

HINT Home customers can submit files anonymously. To track submissions, you will need to sign in with a personal account.
Internal file submission portal

Windows Defender Response Portal

This portal is for internal use by Microsoft employees to report detection concerns to Windows Defender Research

Submit a file internally

Submit files so our analysts can check them for malicious characteristics. Provide the specific files that need to be analyzed and as much background information as possible.

SUBMIT FILE

View your submissions

Track the results of your submissions. You can view detailed detection information of all the files you have submitted as well as the determination provided by our analysts.

SUBMISSION HISTORY

Search all submissions

Go to Researcher Studio to check the results of all submissions, including internal submissions and customer submissions.

RESEARCHER STUDIO

Escalate to WD Response

WD Response serves as the primary contact point to our malware analysts. Submit your files through regular channels before contacting WD Response for special requests or submission follow-ups.

CONTACT WD RESPONSE

Submit a file for malware analysis

Specify the file and provide information that will help us to efficiently handle your case.
Required fields are marked with an asterisk (*).

Additional recipients

Grant other members of your organization access to submission details

Specify the email addresses of users with permission to open the submission details page; separate each address with a semicolon (;)

Was this file found in the Microsoft corporate network?

Provide the Software Assurance ID (SAID) tied to your Microsoft security product
NOTE: If you don't have an SAID, your submissions will be given regular priority. For high priority submissions, contact Premier Support.
Submission priority

Specify submission priority

Choose the file you want to submit

Maximum file size is 50 MB. Use the password "infected" to encrypt ZIP or RAR archives.

NOTE: Submit only the specific files you want analyzed. Submitting an installer package or an archive with a large number of files may delay the analysis and cause your submission to be deprioritized.


Should this file be removed from our database at a certain date?
 
NOTE: Files submitted by multiple users are retained until all retention periods have elapsed.

Do you believe this file contains malware?
Learn how to see the list of detected threats on Windows Defender Antivirus.
Learn how to check the definition version on Windows Defender Antivirus.
To help our analysts process your submission faster, please provide additional information in English. Include any information you may have about the file, including where you have obtained it, business impact, and platform and other details of affected clients.

Review your submission

Company name

Was this file found in the Microsoft corporate network?

Affected organization

Number of affected devices

Product

Submission priority

Software Assurance ID

File

Removal date

Do you believe this file contains malware?

Detection name

Definition version

Additional information

Verify you are human

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