Troj/Labrap-A is a downloader Trojan.
When first run, Troj/Labrap-A will drop a DLL file named winloadhh.dll. The Trojan will attempt to load this DLL from Internet Explorer. The Trojan will then attempt to download and install a DLL from a predefined site.
In order to run automatically each time a user logs in, Troj/Labrap-A may set the following registry entry:
HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon
d2