With today's update the file RU.EXE from Sysinternals Suite is falsely identified as PurityScan

PurityScan: [SBI $654BC5C6] Ausführbare Datei (Datei, nothing done)
ru.exe
Properties.size=150720
Properties.md5=1389548F9D297B965FFF3C3EC1A97C9A
Properties.filedate=1364163844
Properties.filedatetext=2013-03-25 00:24:04

The file is version 1.0, found in the suite from March 2013. It is digitally signed by Microsoft, nobody hampered with it.