The use of email has become an integral part of our daily lives, both personally and professionally. However, email can also be a vector for the spread of viruses, malware, and other malicious software that can compromise our computers and networks. As a result it’ s important to be aware of the types of file formats that are most commonly used to spread viruses in 2023 through e mail and take steps to protect ourselves!
Virus-Infected Emails File Formats
Virus-infected emails can contain attachments or links that can spread malicious software or malware, to a computer or device when opened. The most common file formats used for these attachments include :
Executable files .exe, .com, .bat, .pif, .scr
Document files : .doc, .docx, .xls, .xlsx, .ppt, .pptx, .pdf
Archive files: .zip, .rar, .7z
Image files: .jpg, .jpeg, .png, .gif
It s important to note that any type of file can potentially contain malware, so it’s crucial to be cautious when opening attachments or links from unknown sources
I would like to emphasize the dangers of virus-infected emails and the various file formats that can be used to spread mallicious software, or malware.
Executable files, such as .exe, .com, .bat, .pif, and .scr, are particularly concerning from a security standpoint because they are designed to run automatically when opened, making them an ideal vector for malware propagation. When executed, these files can execute malicious code that infects a computer or device, potentially compromising sensitive data and enabling further attacks.
Similarly, document files, such as .doc, .docx, .xls, .xlsx, .ppt, and .pptx, can be leveraged to spread macro viruses, which are written in macro languages such as Visual Basic for Applications (VBA ) and run automatically when the document is opened. These macro viruses can download and install malware on the victim’s system, compromising its security and enabling the attacker to gain unauthorized access to sensitive information.
Archive files, such as .zip, .rar, and .7z, are often used to package multiple files into a single file for easier sharing. However, they can also be used to spread malware. For example, an attacker might send a virus infected .zip file that when opened, infects the victim’s computer with malware.
Image files, such as .jpg, .jpeg, .png, and .gif, are typically considered safe, but they can still be used to spread viruses. For example, an attacker might send an email with a .jpg file attachment that, when opened, infects the victim’s computer with malware.
In conclusion, it’s imperative to exercise caution when opening attachments or links from unknown sources, regardles of the file format. Implementing robust security (VPN) measures, such as keeping antivirus software up-to date and regularly running security scans, cyber awareness can help mitigate the risk of infection from virus-infected emails. You can check now Examples of Phishing Emails
Example of email with malware
An example of an email with malware could look something like this:
Subject: Important Invoice
Please find attached an important invoice for your recent purchase. We request that you take a moment to review and process the payment as soon as possible.
Thank you for your prompt attention to this matter.
In this scenario, the recipient receives an email from what appears to be a legitimate sender, with a subject line indicating that an invoice is attached. Upon opening the attachment, which is a .zip file, the recipient’s computer becomes infected with malwar . The malware could then steal sensitive information such as login credentials, financial information, or other confidential data.
Another example of an email with malware:
Subject: Your dream vacation awaits!
We hope this email finds you well and ready for a well-deserved vacation! We’ve got some exciting news for you – we’ve secured a limited time offer for a luxurious, all inclusive getaway to a tropical paradise. This once-in-a-lifetime opportunity includes airfare, accommodations, meals, and unlimited access to world-class activities and amenities.
And the best part? You can take advantage of this amazing deal for a fraction of the cost. All you have to do is click on the link below and enter the promo code “VACAY2023” at checkout. Trust us, you won’t find a better vacation package anywhere else!
[Link to malicious website]
Don’t miss out on this incredible opportunity to escape to paradise. Book now and start packing your bags!
In this scenario, the recipient receives an email from what appears to be a legitimate travel company, offerinng an irresistible deal on a dream vacation. However, the link in the email leads to a maliciuous website that is designed to infect the recipient’s computer with malware When the recipient clicks on the link, the malware could install itself on the computer and steal sensitive information, such as login credentials, financial information, or other confidential data.