Trojan:W32/Hosts2.Gen

Classification

Malware

Trojan

W32

Trojan:W32/Hosts2.Gen, Trojan.Win32.Hosts2.gen

Summary

This detection is designed to flag hosts files with multiple entries that point to a single IP address or IP block. This is a characteristic of many trojans, which modify the hosts file to facilitate communications with a malicious remote server.

Removal

Automatic action

For corporate/business environments, please see the note below.

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

Note

Corporate or business environments are special exceptions, as they may require machines in the network to use a customized hosts file with multiple entries for a single IP address/block. These customized hosts files may inadvertently trigger this detection, as they appear to have the same characteristics as a trojanized file.

To prevent the possibility of a false positive or false alarm, customized hosts files should be screened for malicious entries; if all entries are legitimate, the file can then be excluded from subsequent scanning.