Virus: Datein auf USB Stick werden zu Verknüpfungen; Programm findet nix

ESETSmartInstaller@High as downloader log:
all ok
# product=EOS
# version=8
# OnlineScannerApp.exe=1.0.0.1
# EOSSerial=48ac04ca6528aa4b86b0619be7ce7bf9
# end=init
# utc_time=2016-08-21 03:01:55
# local_time=2016-08-21 05:01:55 (+0100, Mitteleuropäische Sommerzeit)
# country="Germany"
# osver=6.2.9200 NT 
Update Init
Update Download
Update Finalize
Updated modules version: 30494
# product=EOS
# version=8
# OnlineScannerApp.exe=1.0.0.1
# EOSSerial=48ac04ca6528aa4b86b0619be7ce7bf9
# end=updated
# utc_time=2016-08-21 03:07:19
# local_time=2016-08-21 05:07:19 (+0100, Mitteleuropäische Sommerzeit)
# country="Germany"
# osver=6.2.9200 NT 
# product=EOS
# version=8
# OnlineScannerApp.exe=1.0.0.1
# OnlineScanner.ocx=1.0.0.7777
# api_version=3.1.1
# EOSSerial=48ac04ca6528aa4b86b0619be7ce7bf9
# engine=30494
# end=finished
# remove_checked=false
# archives_checked=true
# unwanted_checked=true
# unsafe_checked=false
# antistealth_checked=true
# utc_time=2016-08-21 04:26:10
# local_time=2016-08-21 06:26:10 (+0100, Mitteleuropäische Sommerzeit)
# country="Germany"
# lang=1031
# osver=6.2.9200 NT 
# compatibility_mode_1='Avira Antivirus'
# compatibility_mode=1815 16777213 100 99 6659 54979369 0 0
# compatibility_mode_1=''
# compatibility_mode=5893 16776574 100 94 31710223 53481552 0 0
# scanned=236367
# found=5
# cleaned=0
# scan_time=4730
sh=0E0F32DADF8DE250757E27FC5ACBC138EE9E5978 ft=1 fh=c43523e9342f6716 vn="Variante von Win32/DownloadSponsor.C evtl. unerwünschte Anwendung" ac=I fn="C:\Users\PC\Downloads\Ahnenblatt - CHIP-Installer.exe"
sh=C8E67A8588290373E7BC19D3F98A379926AA372B ft=1 fh=ca08db9ed6f8a0a3 vn="Variante von Win32/DownloadSponsor.C evtl. unerwünschte Anwendung" ac=I fn="C:\Users\PC\Downloads\HijackThis - CHIP-Installer.exe"
sh=F3DA9F944F2BC7B2553F4C051F551F6BB6791BA5 ft=1 fh=4ccdcaa44e7e3be8 vn="Variante von Win32/DownloadSponsor.C evtl. unerwünschte Anwendung" ac=I fn="C:\Users\PC\Downloads\No23 Recorder - CHIP-Installer.exe"
sh=6EADB89C7316889790079CBF1043470F95DAB41F ft=1 fh=de113660115719dc vn="Variante von Win32/DownloadSponsor.C evtl. unerwünschte Anwendung" ac=I fn="C:\Users\PC\Downloads\PDF24 Creator - CHIP-Installer.exe"
sh=2AB20B5FB718DC8D006F0F8A11C250FA44EED984 ft=1 fh=17b2900a6c3a46de vn="Win32/InstallMonetizer.AQ evtl. unerwünschte Anwendung" ac=I fn="C:\Users\PC\Downloads\PDFCreator-2_0_1-setup.exe"
Update Init
Update Download
Update Finalize
Updated modules version: 30506