Backdoor:W32/Agobot

Classification

Malware

Backdoor

W32

Backdoor:W32/Agobot

Summary

A remote administration tool (RAT) that bypasses the security features of a program, computer or network to give unauthorized access or control to its user.

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.

Manual Disinfection

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

Manual disinfection for Agobot backdoor requires renaming of an infected file, usually located in Windows or Windows System folder and restarting a system. Please note that the backdoor's file may have read-only, system and hidden attributes, so Windows Explorer has to be configured to show such files.

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

Agobot is an IRC-controlled backdoor with network spreading capabilities.

When spreading it can exploit several vulnerabilities:

  • RPC/DCOM (MS03-026)
  • RPC/Locator (MS03-001)
  • WebDAV (MS03-007)

RPC/DCOM and RPC/Locator is used when the worm tries to spread automatically.

Other spreading methods like the WebDAV exploit can be activated through IRC commands.


Variant:Agobot.F

The Agobot.f variant was reported by several customers in the beginning of September 2003. This backdoor has functionality similar to previous variants. The description of Agobot.f can be found here: http://www.f-secure.com/v-descs/agobot_f.shtml


Variant:Agobot.AX

This backdoor variant is functionaly similar to the previous variants, but it is more powerful than earlier versions. The description of Agobot.AX is available here: http://www.f-secure.com/v-descs/agobot_ax.shtml


Variant:Agobot.P

The Agobot.p variant was reported by several customers in the middle of October 2003. This backdoor has functionality similar to previous variants. The description of Agobot.p can be found here: http://www.f-secure.com/v-descs/agobot_p.shtml


Variant:Agobot.Q

The Agobot.q variant was reported by several customers in the middle of October 2003. This backdoor is a minor variant of Agobot.p, so it has very similar features. The description of Agobot.q can be found here: http://www.f-secure.com/v-descs/agobot_q.shtml