We're gradually updating threat actor names in our reports to align with the new weather-themed taxonomy. Learn about Microsoft threat actor names
Win32/Atak
Detected by Microsoft Defender Antivirus
Aliases: No associated aliases
Summary
Windows Defender Antivirus detects and removes this threat.
Win32/Atak is a family of mass-mailing worms.
They search for email addresses in files on an infected PC and send themselves as an attachment to spoofed emails. They can also make duplicate copies of themselves on an infected PC and configure themselves to run when Windows starts.
Use the following free Microsoft software to detect and remove this threat:
- Microsoft Defender Antivirus for Windows 10 and Windows 8.1, or Microsoft Security Essentials for Windows 7 and Windows Vista
- Microsoft Safety Scanner
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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