Mozilla Firefox kompromittiert? - Desktop-Ordner "Alte Firefox-Daten" mit kryptischem Inhalt aufgetaucht

ESETSmartInstaller@High as downloader log:
all ok
# product=EOS
# version=8
# OnlineScannerApp.exe=1.0.0.1
# EOSSerial=bb7fa5e91c12114e956a1e2b4560e3bd
# end=init
# utc_time=2016-07-04 11:19:05
# local_time=2016-07-05 01:19:05 (+0100, Mitteleuropäische Sommerzeit)
# country="Germany"
# osver=6.2.9200 NT 
ESETSmartInstaller@High as downloader log:
all ok
# product=EOS
# version=8
# OnlineScannerApp.exe=1.0.0.1
# EOSSerial=bb7fa5e91c12114e956a1e2b4560e3bd
# end=init
# utc_time=2017-02-16 05:02:38
# local_time=2017-02-16 06:02:38 (+0100, Mitteleuropäische Zeit)
# country="Germany"
# osver=6.2.9200 NT 
Update Init
Update Download
Update Finalize
Updated modules version: 32428
# product=EOS
# version=8
# OnlineScannerApp.exe=1.0.0.1
# EOSSerial=bb7fa5e91c12114e956a1e2b4560e3bd
# end=updated
# utc_time=2017-02-16 05:06:16
# local_time=2017-02-16 06:06:16 (+0100, Mitteleuropäische Zeit)
# 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=bb7fa5e91c12114e956a1e2b4560e3bd
# engine=32428
# end=finished
# remove_checked=false
# archives_checked=true
# unwanted_checked=true
# unsafe_checked=false
# antistealth_checked=true
# utc_time=2017-02-17 04:06:33
# local_time=2017-02-17 05:06:33 (+0100, Mitteleuropäische Zeit)
# country="Germany"
# lang=1031
# osver=6.2.9200 NT 
# compatibility_mode_1=''
# compatibility_mode=5893 16776573 100 94 267842 18635009 0 0
# scanned=1727001
# found=6
# cleaned=0
# scan_time=39617
sh=619F85EB71F5EED638BA4C74FF199A22E463A794 ft=0 fh=0000000000000000 vn="Variante von Win32/Systweak.L eventuell unerwünschte Anwendung" ac=I fn="C:\$Recycle.Bin\S-1-5-21-3518353940-3529516094-583892879-1001\$RY42NRY.msi"
sh=DA7E1B9AE93E1257D8342D05D0D4CCD2469A9695 ft=1 fh=66d3f6f36a97f9a6 vn="Variante von Win32/Systweak.L eventuell unerwünschte Anwendung" ac=I fn="F:\Kaputt_L_Mama_2016-09\winzip180-32.exe"
sh=777EF76654F142D126674D344E0EF53B31E80A6C ft=0 fh=0000000000000000 vn="Variante von Win32/Systweak.L eventuell unerwünschte Anwendung" ac=I fn="F:\Laptop_Acer_2016-07\Users\*****\Documents\BackUp_Laptop_Mama\*****LAPTOP\Backup Set 2013-09-04 173427\Backup Files 2013-09-04 173427\Backup files 3.zip"
sh=F175D7A3E0A180637976CE51776168B5B2764AB3 ft=0 fh=0000000000000000 vn="Variante von Win32/Systweak.L eventuell unerwünschte Anwendung" ac=I fn="F:\Laptop_Acer_2016-07\Users\*****\Documents\BackUp_Laptop_Mama\*****LAPTOP\Backup Set 2013-09-04 173427\Backup Files 2013-09-04 173427\Backup files 4.zip"
sh=777EF76654F142D126674D344E0EF53B31E80A6C ft=0 fh=0000000000000000 vn="Variante von Win32/Systweak.L eventuell unerwünschte Anwendung" ac=I fn="F:\Mini-BackUp-Laptop_2014-08-20\Desktop\*****LAPTOP\Backup Set 2013-09-04 173427\Backup Files 2013-09-04 173427\Backup files 3.zip"
sh=F175D7A3E0A180637976CE51776168B5B2764AB3 ft=0 fh=0000000000000000 vn="Variante von Win32/Systweak.L eventuell unerwünschte Anwendung" ac=I fn="F:\Mini-BackUp-Laptop_2014-08-20\Desktop\*****LAPTOP\Backup Set 2013-09-04 173427\Backup Files 2013-09-04 173427\Backup files 4.zip"