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Microsoft Security Intelligence
Published Jan 18, 2009 | Updated Sep 15, 2017

Virus:DOS/Samael

Detected by Microsoft Defender Antivirus

Aliases: No associated aliases

Summary

Virus:DOS/Samael is the detection for a NTLDR file modified by the worm Worm:Win32/Samael.A. The system's NTLDR file is a Windows boot file, and when it is modified by the Samael worm, it may possibly lock the user out of the system.
Important Note:
Do not restart your system prior to removing this threat.
 
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.
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