Microsoft security software detects and removes this threat.

Worm:Win32/Gamarue is a family of worms that belong to the Win32/Gamarue family. The Gamarue family may be distributed by exploit kits, spammed emails or other malware, and has been observed downloading other files and stealing information about your computer.

Worm variants of the Win32/Gamarue family may spread by infecting removable drives (such as USB drives or portable hard disks) that you have plugged into your computer. If you then plug those drives into another computer, the worm will infect that computer as well.

See our infographic to for a depiction of how a worm spreads by removable drives.

For more information on this family, see the Win32/Gamarue description.

What to do now

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.

Disable Autorun

This threat tries to use the Windows Autorun function to spread via 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:

Enable MAPS 

Enable the Microsoft Active Protection Service (MAPS) on your system to protect your enterprise software security infrastructure in the cloud.

  1. Check if MAPS is enabled in your Microsoft security product:

    1. Select Settings and then select MAPS.

    2. Select Advanced membership, then click Save changes. With the MAPS option enabled, your Microsoft anti-malware security product can take full advantage of Microsoft's cloud protection service

  2. Join the Microsoft Active Protection Service Community
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.

Threat behavior

For more information on this family, see the Win32/Gamarue description.



Alerts from your security software may be the only symptom.


Alert level: Severe
First detected by definition: 1.113.1195.0
Latest detected by definition: 1.211.1182.0 and higher
First detected on: Oct 07, 2011
This entry was first published on: Oct 07, 2011
This entry was updated on: Oct 08, 2015

This threat is also detected as:
No known aliases