Microsoft Malware Protection Center (MMPC) is now Windows Defender Security Intelligence (WDSI). Watch out for even more info about threats and protecting you and your Windows computer.
Alert level: Severe Detected with Windows Defender Antivirus
Also detected as: No associated aliases
Windows Defender Antivirus detects and removes this worm.
Worms automatically spread to other PCs. They can do this in a number of ways, including by copying themselves to removable drives, network folders, or spreading through email.
What to do now
Use the following free Microsoft software to detect and remove this threat:
- Windows Defender 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 other hidden malware.
This threat tries to use the Windows Autorun function to spread through removable drives, like USB flash drives. You can disable Autorun to prevent worms from spreading:
Scan removable drives
Remember to scan any removable or portable drives. If you have Microsoft security software, see this topic on our software help page:
Get more help
You can also see our advanced troubleshooting page for more help.
If you’re using Windows XP, see our Windows XP end of support page.