I identified it with the help of user Red_Wolf_2 in IRC channel of Eligius.
It appears to be a "bitcoin-miner 0.20 Copyright (c) 2011 Ufasoft" in ./bin/iexplore.exe
and something that does not return anything in ./src/iexplore.exe
the 2nd one is probably a launcher. maybe running dormant.
I have a zip file with them if anyone is interested. Send me an email etc.
That user in that IRC channel already has it.
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Ah, yahoo email identified an unpassworded zip with them as a virus but both avira and antimalwarebytes anti-malware does not detect them.
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They required some ninja moves in cmd to make the folders and files visible for copying.
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I removed those files, and dirs, and I suppose it won't come back. If it does come back, tough, I guess they might have a "parent creator" (rare).
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If I'm gone and can't find me for those files, that user I mentioned may have it. Last I heard he identified the ./src file as being in .Net.