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Microsoft Security Intelligence
Published Oct 24, 2005 | Updated Sep 15, 2017


Detected by Microsoft Defender Antivirus

Aliases: W32.Toxbot (Symantec) W32/Sdbot.worm.gen (McAfee) WORM_CODBOT (Trend Micro) Backdoor.Win32.Codbot (Kaspersky) W32/Codbot-Gen (Sophos) Win32.Toxbot (CA)


Windows Defender Antivirus detects and removes this threat.
Win32/Codbot is a family of network worms that targets computers running certain versions of Microsoft Windows.
Some variants of this family spread to network shares with weak administrator passwords. Other Win32/Codbot variants spread by exploiting one or more Windows vulnerabilities. The worm has a backdoor component that connects to an IRC server from an infected computer to receive commands from attackers.

Use the following free Microsoft software to detect and remove this threat:

You should also run a full scan. A full scan might find hidden malware.

Get more help

You can also visit our advanced troubleshooting page or search the Microsoft virus and malware community for more help.

If you’re using Windows XP, see our Windows XP end of support page.

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