well there it is. found it in the logs..
PUP.Optional.SearchHijacker.A, C:\Users\User\AppData\Local\Temp\is147069411\2EF59781_stp\July15_www.sweet-page.com.exe, Quarantined, [8fbcda38d5a72f0783da4d5a70919070]

 GOD how long is this virus on my computer i just can't believe it right now 

was it enough to quarantine it or should i better reinstall my whole system?

Thanks for the help btw!

yes i also used the blockchain.info wallet.
also i don't think i had been on a faked site, i typed it in by myself, not clicking any link on google or something.
luckily i spent like 90% of my btc a couple hours before... so damage was not THAT big.

browserplugin... mhm ... i got these and none of them is new
http://abload.de/image.php?img=pluginswdfsx.jpg

i really think it's bc.i's fault, well besides not having a 2FA 

well i use windows 7 64bit and as anti-virus software i use avast, always up to date for sure.
i don't think i got any logs. i checked avast and there are no protocols.

i just installed malwarebytes now and checked my system. there were some potential threats detected but how can i know if they are somehow related to this bitcoin thing?

Edit: wow that's such a enormous list of adresses... and he probably stole money from all these people 

Hi there,
the adress u posted also stole my bitcoins
well i don't know how the f*** this could happen...
i used the blockchain.info wallet with a pretty secure password (>10 characters, capital/small letters, special characters, numbers).
it was about 0.1 btc he stole me and my BTC-adress also is in the list posted above.

i guess they are gone and i can't really do anything about it, but what can i do to prevent this to happen again??