We're gradually updating threat actor names in our reports to align with the new weather-themed taxonomy. Learn about Microsoft threat actor names
VirTool:INF/Autorun.gen
Aliases: Trojan.AutorunINF.Gen (BitDefender) INF.AutoRun (Sunbelt Software)
Summary
Windows Defender detects and removes this threat.
The autorun.inffile is created by worms when they copy themselves to a local, network, or removable drive.
Some worms can spread to other PCs by infecting removable drives that you have plugged into your PC (such as USB drives or portable hard disks). If you plug those drives into another PC, the worm will infect that PC as well.
This is a common way for malware to spread. However, autorun.inf files on their own are not necessarily a sign of infection, they are also used by legitimate programs.
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 other hidden malware.
Disable Autorun
This threat tries to use the Windows Autorun function to spread via removable drives, such as 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 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.
