Backdoor:W32/Agobot.VS

Classification

test

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Agobot.VS, Agobot.VS, Backdoor.Agobot.VS, W32.HLLW.Gaobot, Gaobot, Win32/Gaobot, Phatbot, Phat

Summary

The Agobot.VS variant was found on October 27th, 2004. We received several reports about it from the field. This backdoor is functionality similar to previous Agobot variants.

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

Security Updates

The most important step of disinfection is the installation of security patches for the vulnerabilities exploited by Agobot.

Detailed information and patches are available from the following pages:

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.

More scanning & removal options

More information on the scanning and removal options available in your F-Secure product can be found in the Help Center.

You may also refer to the Knowledge Base on the F-Secure Community site for further assistance.

Manual Disinfection

Caution: Manual disinfection is a risky process; it is recommended only for advanced users.

Manual disinfection of this Agobot variant requires killing the backdoor's process in memory and deletion of the infected file from Windows System folder.

The file name is 'winl0g0n.exe'. There are zeroes instead of 'o' letters in the file name: do not confuse this file with a Windows component named 'winlogon.exe'!