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Worm:Win32/SillyShareCopy.E!inf
Aliases: BAT/VBWorm.NMX (Norman) TR/Script.59321 (Avira) Trojan.Script.59321 (BitDefender) W32.Pitin.B (Symantec) Win32/AutoRun.WD (ESET)
Summary
Worm:Win32/SillyShareCopy.E!inf is an "autorun.inf" file created by a worm to enable it to spread and infect other computers through network shares, removable devices and local drives.
- Microsoft Security Essentials or, for Windows 8, Windows Defender
- Microsoft Safety Scanner
Disable Autorun functionality
This threat attempts to spread via removable drives on computers that support Autorun functionality. This is a particularly common method of spreading for many current malware families. For information on disabling Autorun functionality, please see the following article:
http://support.microsoft.com/kb/967715/
Recovering from recurring infections on a network
The following additional steps may need to be taken to completely remove this threat from an infected network, and to stop infections from recurring from this and other similar types of network-spreading malware:
- Ensure that an antivirus product is installed on ALL computers connected to the network that can access or host shares.
- Ensure that all available network shares are scanned with an up-to-date antivirus product.
- Restrict permissions as appropriate for network shares on your network. For more information on simple access control, please see: http://technet.microsoft.com/library/bb456977.aspx.
- Remove any unnecessary network shares or mapped drives.
Note: Additionally it may be necessary to temporarily change the permission on network shares to read-only until the disinfection process is complete.