What is the "Tax Summary Email Virus"

What kind of email is "Tax Summary Email Virus"?

We have reviewed this email and found that it is malspam. The message impersonates tax.com, a legitimate tax preparation service, and falsely claims the recipient has a pending tax summary that requires urgent review. Its true purpose is to get people to click a link that leads to a malicious website and ultimately delivers malware to their device. The email should be deleted immediately without following any of its instructions.

More about the "Tax Summary Email Virus" email

The email poses as a message from a "Tax Support Specialist" at tax.com. It claims a preliminary tax summary has been prepared and asks the recipient to review their deductions, withholdings, and estimated payments before the file is finalized. To appear more convincing, it uses tax.com's branding and includes a confidentiality notice at the bottom. Tax.com has no connection to this campaign.

A button labeled "View My Tax Summary" is placed prominently in the email body. The sender includes a fake urgency cue, warning that the link will expire in 48 hours. Clicking the button redirects the victim to a website that has nothing to do with tax.com.

The linked site imitates a Microsoft SharePoint "Download complete" confirmation page, complete with false claims of Microsoft Defender scanning and Cloudflare Zero Trust delivery. Microsoft, SharePoint, and Cloudflare have no connection to this campaign. The page silently triggers the download of a ZIP archive containing a VBScript (.vbs) file.

When the archive is opened and the VBScript file is executed, it silently injects malware into the victim's system. The specific malware delivered by this campaign is currently unknown. It may be ransomware that encrypts files and demands payment, a stealer targeting login credentials, a keylogger, a remote access trojan, or another type of malicious software.

Anyone who followed the link, downloaded the archive, and ran the script inside should assume their device may be compromised. Running a full system scan with a reputable antivirus tool is strongly recommended. The email should be deleted without clicking any links.

Spam campaign examples

This email impersonates tax.com to trick recipients into clicking a link that leads to a fake Microsoft SharePoint page. The page silently downloads a ZIP archive containing a VBScript file. Running that file installs malware on the victim's device.

Your Cheque Is Ready, DocuSign - Shared Document, and DocuSign - Legal Department Document are just a few examples of malspam we have analyzed. Cybercriminals distribute these campaigns at scale, counting on at least some recipients to follow the instructions contained within them.

How do spam campaigns infect computers?

Spam emails spread malware through two main methods: malicious attachments and links that lead to harmful websites. Attachments can take many forms, including Office documents, PDFs, archives, executables, and script files. Some infect a computer the moment they are opened, while others require additional steps - such as enabling macro commands in an Office file - before any damage occurs.

Links in spam emails often lead to fake portals or compromised pages that trigger automatic downloads. These sites are typically designed to resemble legitimate services in order to reduce suspicion. Once the victim opens and runs the downloaded file, the malware installation begins.

How to avoid installation of malware?

Treat unexpected emails with caution, particularly those that create urgency or include file downloads. Do not click links or open attachments from senders you do not recognize. If an email appears to come from a familiar brand, verify the request through that company's official website before taking any action.

Keep your operating system and all installed software up to date. Only download programs from official developer websites or verified app stores. Avoid tools that circumvent software licensing or activation - these are commonly used to distribute malware.

A reputable antivirus program provides an important layer of protection. If you have already clicked a link from this campaign or opened the downloaded file, we recommend running a scan with Combo Cleaner Antivirus for Windows to automatically eliminate any malware that may have been installed.

Text presented in the "Tax Summary Email Virus" email letter:

Subject: Review Your Tax Summary to avoid getting overbilled

tax.com™
secure message

This Email Is Intended For You Privately.

I hope you are doing well.

As part of our standard quality assurance process, I have prepared a preliminary summary of your upcoming tax review. Before we finalize anything, I kindly ask you to look over the deductions, withholdings, and estimated payments listed in your file to ensure everything matches your records.

Catching these details now helps us avoid any unexpected billing or corrections later.
To access your secure summary:
Please click below to view the document. you will find your personalized tax summary in your system downloads.
[View My Tax Summary]

Security reminder: For your protection, this link will expire in 48 hours. If you have trouble logging in, simply reply to this email and I will assist you directly.

secure portal

Please let me know if you have any questions or spot anything that doesn't look right.

Best regards,

Tax Support Specialist

This email contains confidential information intended solely for the named recipient. If you are not the intended recipient, please delete this message immediately.

© tax.com™ — secure client communication

Screenshot of the malicious website promoted by this spam campaign:

Instant automatic malware removal:

Manual threat removal might be a lengthy and complicated process that requires advanced IT skills. Combo Cleaner is a professional automatic malware removal tool that is recommended to get rid of malware. Download it by clicking the button below:

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Quick menu:

• What is Tax Summary malspam?
• Types of malicious emails.
• How to spot a malicious email?
• What to do if you fell for an email scam?

Types of malicious emails:

Phishing Emails

Most commonly, cybercriminals use deceptive emails to trick Internet users into giving away their sensitive private information, for example, login information for various online services, email accounts, or online banking information.

Such attacks are called phishing. In a phishing attack, cybercriminals usually send an email message with some popular service logo (for example, Microsoft, DHL, Amazon, Netflix), create urgency (wrong shipping address, expired password, etc.), and place a link which they hope their potential victims will click on.

After clicking the link presented in such email message, victims are redirected to a fake website that looks identical or extremely similar to the original one. Victims are then asked to enter their password, credit card details, or some other information that gets stolen by cybercriminals.

Emails with Malicious Attachments

Another popular attack vector is email spam with malicious attachments that infect users' computers with malware. Malicious attachments usually carry trojans that are capable of stealing passwords, banking information, and other sensitive information.

In such attacks, cybercriminals' main goal is to trick their potential victims into opening an infected email attachment. To achieve this goal, email messages usually talk about recently received invoices, faxes, or voice messages.

If a potential victim falls for the lure and opens the attachment, their computers get infected, and cybercriminals can collect a lot of sensitive information.

While it's a more complicated method to steal personal information (spam filters and antivirus programs usually detect such attempts), if successful, cybercriminals can get a much wider array of data and can collect information for a long period of time.

Sextortion Emails

This is a type of phishing. In this case, users receive an email claiming that a cybercriminal could access the webcam of the potential victim and has a video recording of one's masturbation.

To get rid of the video, victims are asked to pay a ransom (usually using Bitcoin or another cryptocurrency). Nevertheless, all of these claims are false - users who receive such emails should ignore and delete them.

How to spot a malicious email?

While cyber criminals try to make their lure emails look trustworthy, here are some things that you should look for when trying to spot a phishing email:

• Check the sender's ("from") email address: Hover your mouse over the "from" address and check if it's legitimate. For example, if you received an email from Microsoft, be sure to check if the email address is @microsoft.com and not something suspicious like @m1crosoft.com, @microsfot.com, @account-security-noreply.com, etc.
• Check for generic greetings: If the greeting in the email is "Dear user", "Dear @youremail.com", "Dear valued customer", this should raise suspiciousness. Most commonly, companies call you by your name. Lack of this information could signal a phishing attempt.
• Check the links in the email: Hover your mouse over the link presented in the email, if the link that appears seems suspicious, don't click it. For example, if you received an email from Microsoft and the link in the email shows that it will go to firebasestorage.googleapis.com/v0... you shouldn't trust it. It's best not to click any links in the emails but to visit the company website that sent you the email in the first place.
• Don't blindly trust email attachments: Most commonly, legitimate companies will ask you to log in to their website and to view any documents there; if you received an email with an attachment, it's a good idea to scan it with an antivirus application. Infected email attachments are a common attack vector used by cybercriminals.

To minimise the risk of opening phishing and malicious emails we recommend using Combo Cleaner Antivirus for Windows. 

Example of a spam email:

What to do if you fell for an email scam?

• If you clicked on a link in a phishing email and entered your password - be sure to change your password as soon as possible. Usually, cybercriminals collect stolen credentials and then sell them to other groups that use them for malicious purposes. If you change your password in a timely manner, there's a chance that criminals won't have enough time to do any damage.
• If you entered your credit card information - contact your bank as soon as possible and explain the situation. There's a good chance that you will need to cancel your compromised credit card and get a new one.
• If you see any signs of identity theft - you should immediately contact the Federal Trade Commission. This institution will collect information about your situation and create a personal recovery plan.
• If you opened a malicious attachment - your computer is probably infected, you should scan it with a reputable antivirus application. For this purpose, we recommend using  Combo Cleaner Antivirus for Windows.
• Help other Internet users - report phishing emails to Anti-Phishing Working Group, FBI’s Internet Crime Complaint Center, National Fraud Information Center and U.S. Department of Justice.

Frequently Asked Questions (FAQ)

Why did I receive this email?

Spam emails are not personal. Cybercriminals send identical messages to large numbers of recipients at once, using address lists gathered from data breaches, scraping tools, or purchased underground databases. Receiving this email does not mean the sender has any specific information about you.

I have provided my personal information when tricked by this email, what should I do?

If you entered login credentials anywhere prompted by this email, change those passwords immediately. If financial or identity-related information was shared, contact your bank or the relevant authorities as soon as possible.

I have downloaded and opened a file promoted by this spam email, is my computer infected?

The infection depends on whether the VBScript file inside the downloaded archive was actually executed. If you opened the archive but did not run the script, the risk is lower. If the script was run, malware may have been installed. Running a full scan with a trusted antivirus tool is recommended in either case.

I have read the email but did not open the attachment, is my computer infected?

No. Reading an email does not trigger any malicious processes. Infection only occurs when the recipient clicks the link, downloads the archive, and executes the file inside. Deleting the email without interacting with its contents keeps the system safe.

Will Combo Cleaner remove malware infections that were present in email attachment?

Yes, Combo Cleaner is capable of detecting and removing the vast majority of known malware infections. However, some sophisticated threats can hide deep within the system and require a thorough search to locate. Running a full system scan rather than a quick check is always recommended.