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Published May 08, 2008 | Updated Sep 15, 2017

Virus:Win32/Chir.B@mm

Detected by Microsoft Defender Antivirus

Aliases: No associated aliases

Summary

Windows Defender Antivirus detects and removes this threat.
 
This virus can infect your files, making it impossible to open them. It can also show pop-up messages to Chinese users.
 
It spreads via email attachments and infected drives, including USB flash drives. 

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

You should also run a full scan. A full scan might find other, 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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