Skip to main content
Skip to main content
Microsoft Security Intelligence
Cart 0 items in shopping cart
Sign in
Published May 06, 2010 | Updated Sep 15, 2017

Worm:Win32/Slenfbot.YT

Detected by Microsoft Defender Antivirus

Aliases: QHosts-131 (McAfee) Mal_BUZUS-5 (Trend Micro) Troj/QHost-AD (Sophos) W32.SillyDC (Symantec)

Summary

Worm:Win32/Slenfbot.YT is a worm that can spread via MSN Messenger, and may spread via removable drives. The worm also contains backdoor functionality that allows unauthorized access to an affected machine. This worm does not spread automatically upon installation, but must be ordered to spread by a remote attacker.
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 the Microsoft Safety Scanner (http://go.microsoft.com/fwlink/?LinkId=212742). For more information, see http://www.microsoft.com/protect/computer/viruses/vista.mspx.
 
Additional remediation instructions for Win32/Slenfbot
This threat may make lasting changes to a computer’s configuration that are NOT restored by detecting and removing this threat. For more information on returning an infected computer to its pre-infected state, please see the following article/s: 
Enabling Task Manager:
Enabling System Restore:
Disabling Autorun functionality
Win32/Slenfbot 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:
Follow us