Troj/Soleno-H is a backdoor Trojan that allows a remote intruder to gain access and control over the computer.

When first run Troj/Soleno-H copies itself to (Windows)\lEXPLORE.exe and creates the following files:

Temp\2bbe3.dmp
Temp\WER2.tmp.dir00\appcompat.txt
Temp\wer2.tmp

More information can be found at this Sophos page.