Trojan:HTML/Postcards.N

Classification

Malware

Other

-

Trojan:HTML/Postcards.N, Trojan:HTML/Postcards.N

Summary

Files detected as HTML/Postcard.N@troj are EML files that state that the recipient has received a greeting card.

The recipient is encouraged to click on a link or to visit a website and enter their eCard number to view the message.

Removal

Automatic action

Based on the settings of your F-Secure security product, it will either move the file to the quarantine where it cannot spread or cause harm, or remove it.

Suspect a file is incorrectly detected (a False Positive)?

A False Positive is when a file is incorrectly detected as harmful, usually because its code or behavior resembles known harmful programs. A False Positive will usually be fixed in a subsequent database update without any action needed on your part. If you wish, you may also:

  • Check for the latest database updates

    First check if your F-Secure security program is using the latest detection database updates, then try scanning the file again.

  • Submit a sample

    After checking, if you still believe the file is incorrectly detected, you can submit a sample of it for re-analysis.

    NOTE If the file was moved to quarantine, you need to collect the file from quarantine before you can submit it.

  • Exclude a file from further scanning

    If you are certain that the file is safe and want to continue using it, you can exclude it from further scanning by the F-Secure security product.

    Note You need administrative rights to change the settings.

Find out more

Knowledge Base

Find the latest advice in our Community Knowledge Base.

User Guide

See the user guide for your product on the Help Center.

Contact Support

Chat with or call an expert for help.

Submit a sample

Submit a file or URL for further analysis.

Technical Details

Files that are detected as HTML/Postcard.N@troj are EML files that state that the recipient has received a greeting card from a friend, relative, or classmate. The recipient is encouraged to click on a link or to visit a website and enter their eCard number to view the message.

When the user click this link, another page will appear stating that a new browser feature is currently being tested. The recipient is asked to click another link pointing to a file, usually named ECARD.EXE. We are detecting these files as Email-Worm.Win32.Zhelatin.

The website seems to have obfuscated javascript that uses exploits to download the file to the recipient's machine. Currently, these page are detected as HTML/IESlice.B@troj.

An example message: