Cidra.D

Classification

Malware

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Cidra.D

Summary

Cidra.D was discovered on 10th of March 2004. It's a trojan proxy, allowing to use users' computers to relay information, i.e. unsolicited email.

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.

For more Support

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

Installation to system

The trojan will add an entry to the Windows registry aiming at being run every time Windows starts. The key will be:

[HKLM\Software\Microsoft\Windows\CurrentVersion\Run\UsbD]
 

Which will point where the file is initially run from.

Spreading in

Cidra.D does not spread by itself. It was massively spammed.

Payload

It will relay connections though infected computers, giving its creator a massively distributed distribution channel for spam and other content.