Hi tgs,
As NickGolovko says, this is a DrWeb detection. You can download the latest DrWeb CureIt (non-resident scanner), and you are fully protected of course against at least this one.
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Remember that not a single resident AV-scanner gets them all, so occasionaly you scan with either on-line scanners or non-resident scanners like DrWebCureIt, the latest version of stinger.exe or DrWeb anti-virus link checker (free in-browser plug-in for various browsers), online Bitdefender scan, etc.
Do not scan with online scanners that interfere with avast like Panda, and never use two resident av solutions at once (FPs).
Well, actually there is no excuse for not minimalizing the vulnerability window to a tiny jar (you could be very unlucky and hit a full zero.day exploit or become a victim of a prepared action event (hack); these things you cannot protect against, but at least for these occasions surf without full rights (normal user rights only), and without script active). Security is an attitude, it is not a roulette thing.
polonus
