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Microsoft Security Intelligence
Published Feb 12, 2010 | Updated Sep 15, 2017


Detected by Microsoft Defender Antivirus

Aliases: Win32/Autorun.worm.136192.K (AhnLab) W32/Worm.AOPV (Command) P2P-Worm.Win32.Palevo.kbc (Kaspersky) Worm.Win32.AutoRun.sus (Rising AV) W32.Pilleuz (Symantec) WORM_PALEVO.SMFA (Trend Micro)


Worm:Win32/Rimecud.R is a worm that spreads via removable drives, shared folders, and MSN Messenger. It also connects to remote servers.
Manual removal is not recommended for this threat. To detect and remove this threat and other malicious software that may have been installed, run a full-system scan with an up-to-date antivirus product such as Microsoft Security Essentials, or the Microsoft Safety Scanner. For more information about using antivirus software, see
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:
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:
  1. Ensure that an antivirus product is installed on ALL computers connected to the network that can access or host shares  (see above for further detail).
  2. Ensure that all available network shares are scanned with an up-to-date antivirus product.
  3. Restrict permissions as appropriate for network shares on your network. For more information on simple access control, please see:
  4. 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.
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