The BDRemovalToolLauncher_sirefef_x64 I uploaded
today 7-28-2012
from the link you just posted has a digital signature of
Tuesday, July 24, 2012 12:43:35 PM and is
13,533kb file/product version. 2.2.0.5
I ran the BDRemovalToolLauncher_sirefef_x64 and it is still not detecting or removing some of the variants of Trojan.sirefef that is on my desktop computer.
It seems the tool you posted as new yesterday, was a tool from several days ago that many of us have already told you was not removing some variants of Trojan.sirefef.
It seems the tool that you posted yesterday as new, is the same tool from 7-24-2012 that many of us have told you was ineffective against some variants of Trojan.sirefef.
Today I downloaded another copy of BDRemovalToolLauncher_sirefef_x64 from the link you just posted. I ran it and it found no infections. I immediately ran a bitdefender full scan, and it found and quarantined Trojan.sirefef.fy. So it seems that the alleged "new" tool is still not finding some variants of the Trojan.sirefef. It seems that the alleged "new" tool is an older tool from the 7-24-2012 that many of us already told you it was not working on our infections. Even though bit defender antivirus found and allegedly quarantined the Trojan, the Trojans keep coming back on subsequent boot and scan cycles.