Bei Mozilla öffnet sich beim Suchvorgang zusätzlicher Tab mit dem Namen (loading), kann das ein Trojaner sein?

ESETSmartInstaller@High as downloader log:
all ok
# version=8
# OnlineScannerApp.exe=1.0.0.1
# OnlineScanner.ocx=1.0.0.6920
# api_version=3.0.2
# EOSSerial=dad2b5283b16154796badf64b900c0f0
# engine=18192
# end=finished
# remove_checked=false
# archives_checked=false
# unwanted_checked=false
# unsafe_checked=false
# antistealth_checked=true
# utc_time=2014-05-09 11:36:33
# local_time=2014-05-09 12:36:33 (+0000, Westeuropäische Sommerzeit)
# country="Germany"
# lang=1031
# osver=6.2.9200 NT 
# compatibility_mode=5893 16776574 100 94 3474764 16951690 0 0
# scanned=160883
# found=2
# cleaned=0
# scan_time=4787
sh=DE0F453AD7E45914C2F6E2A6BC782AFB6DB94B9D ft=1 fh=1f461786edf5f19c vn="NSIS/StartPage.CC Trojaner" ac=I fn="C:\Users\Julia\Downloads\vlc-2.1.3-win32(1).exe"
sh=DE0F453AD7E45914C2F6E2A6BC782AFB6DB94B9D ft=1 fh=1f461786edf5f19c vn="NSIS/StartPage.CC Trojaner" ac=I fn="C:\Users\Julia\Downloads\vlc-2.1.3-win32.exe"
         

 Results of screen317's Security Check version 0.99.82  
   x64 (UAC is enabled)  
 Internet Explorer 11  
``````````````Antivirus/Firewall Check:`````````````` 
 WMI entry may not exist for antivirus; attempting automatic update. 
`````````Anti-malware/Other Utilities Check:````````` 
  Adobe Flash Player 	12.0.0.70 Flash Player out of Date!  
 Mozilla Firefox (29.0) 
 Google Chrome 34.0.1847.116  
 Google Chrome 34.0.1847.131  
````````Process Check: objlist.exe by Laurent````````  
 Malwarebytes Anti-Malware mbamservice.exe  
 Malwarebytes Anti-Malware mbam.exe  
 Avira Antivir avgnt.exe 
 Avira Antivir avguard.exe 
`````````````````System Health check````````````````` 
 Total Fragmentation on Drive C:  % 
````````````````````End of Log``````````````````````