Trojans are malicious applications that pose themselves as legitimate software in order to trick users to install them. Once on the victim's machine, it may run any number of malicious process to steal vital information or inflict damage to other software.
Comment:
Downloads software without users knowledge.
Manual
removal:
From SOPHOS.
When first run Troj/Dloader-SL copies itself to <System>\popcorn72.exe and creates the following files:
<System>\msblank.html
Troj/Dloader-SL changes the Start Page for Microsoft Internet Explorer by setting the registry entry:
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