We're gradually updating threat actor names in our reports to align with the new weather-themed taxonomy. Learn about Microsoft threat actor names
Worm:Win32/Fadok.A
Aliases: Trojan-FHDX!903FD961B8B9 (McAfee) SMG.Heur!gen (Symantec)
Summary
Microsoft 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.
Use the following free Microsoft software to detect and remove this threat:
- Microsoft Defender Antivirus for Windows 8.1 and Windows 10, 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.
Disable Autorun
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:
Use cloud protection
Use cloud protection to help guard against the latest malware threats. It’s turned on by default for Microsoft Security Essentials and Windows Defender for Windows 10.
Go to All settings > Update & security > Windows Defender and make sure that your Cloud-based Protection settings is turned On.
Get more help
You can also see our advanced troubleshooting page for more help 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.