DavidR
2
Hi, welcome to the forums.
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It is a worm - a google search for Win32:beagle (this will give more information on the beagle family rather than a variant) should return more hits if you are interested.
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Google and Vgrep - http://www.virusbtn.com/perlbin/vgrep/vgrep.cgi?terms=Win32%3Abeagle&product=1
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It is harmless in the chest, this gives time to investigate. From the chest it can be restored or deleted as required. Generally you should leave it there for a short period of time and ensure that there are no adverse effects on your system.