Fake and Virus Thanksgiving Day Costco Email - Thank You for Buying From Costco.com

Fake and Virus Thanksgiving Day Costco Email - Thank You for Buying From Costco.com

The email message below with the subject: "Thank you for buying from Costco," "Acceptance of Order," or "Details of your order from Costco" has a link that goes to a malicious website that will download a malicious file onto your computer. The malicious file will infect your Windows computer if you open it. The fake and malicious message was created by cyber-criminals to trick the recipients into clicking on the link by claiming that they need to do so in order to view the order that they have made.

The Fake and Virus Email Message

Subject: Thank you for buying from Costco, Acceptance of Order, or Details of your order from Costco

Our online store Costco.com received an order and the personal data of the recipient coincide with yours.

You may get your order in the nearest Local Store.

Attention! Your order can be reserved within 4 days.

You may see order details here.

Happy Thanksgiving Day!

Truly yours,


1998 - 2014
Costco Wholesale Corporation
All rights reserved

If you open the malicious file, your computer will become infected with a Trojan horse. Once your computer has become infected with the malicious Trojan horse, the cybercriminals behind the email message will be able to access and take control of your computer remotely from anywhere around the world. They may spy on you, use your computer to commit cybercrimes, or steal your personal and financial information.

Now, if you have already opened clicked on the link, downloaded and open the malicious file, please do a full scan of your computer with the antivirus software installed on it.

If you don’t have antivirus software installed on your computer, please click here for a list of free antivirus software.

Click here for a list of email attachments you should never open, regardless of where they came from.

For a list of other virus email messages, please click here.

The malicious email message is similar to the following:

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Note: Some of the information in samples on this website may have been impersonated or spoofed.
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Comments, Questions, Answers, or Reviews

Comments (Total: 9)

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  • November 11, 2016 at 8:43 PM by an anonymous user from: Sunnyvale, California, United States

    Gift card for answering if I shop online or in store. Email says it is from "thank you" and refers to Costco. Not sure if legit, so trashed.

  • December 6, 2014 at 6:18 AM by an anonymous user from: Chicago, Illinois, United States

    My daughter (not a Costco member) DID open the Costco email thinking I had ordered something for her.

    Boy was she surprised when her Windows laptop started playing short snippets of music and flashing messages to her screen about viruses infecting her computer.

    One of the screens encouraged her to download a software program to remove the viruses for $49 - 6 month protection or $99 for lifetime protection.

    She did not fall for this trap but instead called her father.

    I rebooted her laptop and downloaded a free copy of malwarebytes from www.malwarebytes.org. (There are 8-10 other FREE antivirus software programs available to use - but I have used malwarebytes before and found it to be effective).

    The download process was a bit difficult. The screen that shows the percent downloaded seem to terminate shortly after the download process started.

    I proceeded to make 4 additional attempts to download the program - each seemed to end abruptly.

    I then rebooted the laptop in SAFE MODE. Opened the download subdirectory and found 5 copies of the malwarebytes program did actually download.

    After opening, installing and running malwarebytes it was able to identify 8 different Trojan files:

    Trojan.Zemot File

    Trojan.Agent.FSAVXGen File

    Trojan.FakeAV Registry Value

    Trojan.FakeAV File

    Trojan.Agent.IGen Registry Value

    Trojan.Agent.IGen File

    Trojan.Agent.IGen Registry Key

    Trojan.Agent.IGen Registry Key

    Malwarebytes was able to quarantine all of the Trojan viruses and remove them from her laptop.

  • December 2, 2014 at 2:48 PM by an anonymous user from: Redding, California, United States

    I stupidly clicked the link. Anyone know if this potentially can affect macs?

    • December 23, 2014 at 10:04 AM by an anonymous user from: Newark, New Jersey, United States

      Me too, It drives me crazy this morning. I did not enter or download anything from the link. I am not even sure if the link opened. I think it said cannot open or cannot something. I turn those link off after a few seconds. I hope everything is ok. Not sure what antivirus software should I use for Macbook.

      • December 23, 2014 at 10:09 AM by info

        <a href="/article/2013/6/6/free-antivirus-software/">Click here</a> for a list of anti-virus for your Macbook.

    • December 2, 2014 at 6:47 PM by info

      It is currently targeting the Windows operating system, but it is still not wise to click on the link if they you are using another operating system.

      But, to be on the safe side, do a full scan of your computer with the antivirus software on your computer.

  • December 1, 2014 at 12:43 PM by an anonymous user from: Troutdale, Oregon, United States

    (12/1 Portland, OR) We just found one of these e-mails, (with wording identical to the one above)in our spam folder. It looked very suspicious so I called Costco online pharmacy's customer service and they agreed it was likely a scam and asked me to forward the e-mail to them, which I did.

    Have not heard anything back from Costco so far. Fortunately we did not click on the embedded link, and our AV software (Norton)indicated it had found and removed malicious software which it identified as: vip_117[1].swf (Trojan Swifi)and flagged as very bad.

    What's interesting is that I had recently submitted a prescription refill request to Costco, so am wondering if someone has hacked into their system - or perhaps it's just a coincidence.

    Anyway we're glad our e-mail and AV programs did their job.

  • November 30, 2014 at 10:39 PM by an anonymous user from: Los Angeles, California, United States

    Just saw this email in my Spam folder and thought it was suspicious. My question is, how do they know that I indeed ordered from Costco.com in the last few days? Seems scary!

    • December 1, 2014 at 5:22 AM by info

      They do not know. They just send out the email message to everyone (even persons who did not shop at Costco), hoping they will trick someone who recently shopped at Costco.

      We received the email although we have never shopped at Costco.

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Fake and Virus Thanksgiving Day Costco Email - Thank You for Buying From Costco.com