Hi
I don’t know what’s going on today with Avast, but when I use any of my browsers I get continuous warning about that malware…This is unbelievable: I scanned and cleaned with Avast, Spybot, Malwarebyte, Superantispyware and Adware-Removal Tool and the problem is still there :o
Anyway, you can find logs attached. Thanks in advance
Remnants of YAC still trying to get through
CAUTION : This fix is only valid for this specific machine, using it on another may break your computer
Open notepad and copy/paste the text in the quotebox below into it:
CreateRestorePoint: 2015-01-15 16:35 - 2015-01-15 16:35 - 00000000 ____D () C:\Users\Ermes Antonucci\AppData\Local\Temp{878EDA9A-CC4A-4540-8510-CCCECAF8AF74} S1 iSafeKrnlMon; \??\C:\Program Files (x86)\Elex-tech\YAC\iSafeKrnlMon.sys [X] C:\Program Files (x86)\Elex-tech EmptyTemp: CMD: bitsadmin /reset /allusers
Save this as fixlist.txt, in the same location as FRST.exe
https://dl.dropboxusercontent.com/u/73555776/FRSTfix.JPG
Run FRST and press Fix
On completion a log will be generated please post that
THEN
Please download AdwCleaner by Xplode onto your desktop.
[*]Close all open programs and internet browsers.
[*]Double click on AdwCleaner.exe to run the tool.
[*]Click on Scan.
[*]After the scan is complete click on “Clean”
[*]Confirm each time with Ok.
[*]Your computer will be rebooted automatically. A text file will open after the restart.
[*]Please post the content of that logfile with your next answer.
[*]You can find the logfile at C:\AdwCleaner[S1].txt as well.
Damn, it seemed it was fixed initially, but after few seconds surfing it appeared again… logs attached…
Could you delete your current copy of FRST and download a fresh one, then run the fix again please
Please download Farbar Recovery Scan Tool and save it to your Desktop.
Yep, actually it gave me a strange error when I started it for the first time…I thought it was not important, sorry…anyway, new logs attached
Could you now re-run the previous fix that I had posted 
I did that thing with FRST and you can find the new log. I scanned with AdwCleaner but the only one programme it found is safe (100% sure, you can check the log) so I didn’t reboot…And the problem is still there…
The only unusual thing I noted (also previously) is that when AdwCleaner started the scan it closed Firefox and an error message about “plugin container has stopped working” appeared (but this also happened other times when for instance the browser was overload with videos)…
Could you download the attached fixlist.txt to the same location as FRST
Start FRST and press fix
Then post the resultant fixlog please
here
Damn, am I the only one to whom this procedure doesn’t work? 
So you are still getting the alerts ?
CAUTION : This fix is only valid for this specific machine, using it on another may break your computer
Open notepad and copy/paste the text in the quotebox below into it:
CreateRestorePoint: HKU\S-1-5-21-1915784811-108006796-3065416147-1001\...\Run: [cacaoweb] => C:\Users\Ermes Antonucci\AppData\Roaming\cacaoweb\cacaoweb.exe [504112 2015-01-19] () FF Extension: cacaoweb - C:\Users\Ermes Antonucci\AppData\Roaming\Mozilla\Firefox\Profiles\407ufir1.default\Extensions\cacaoweb@cacaoweb.org [2015-01-19] 2015-01-15 16:35 - 2015-01-15 16:35 - 00000000 ____D () C:\Users\Ermes Antonucci\AppData\Local\Temp{878EDA9A-CC4A-4540-8510-CCCECAF8AF74} EmptyTemp: CMD: bitsadmin /reset /allusers
Save this as fixlist.txt, in the same location as FRST.exe
https://dl.dropboxusercontent.com/u/73555776/FRSTfix.JPG
Run FRST and press Fix
On completion a log will be generated please post that
I solved it (I hope). I tried system restore twice, they were successful except for a register file in Avast folder…So I uninstalled Avast, I did all the scans/cleans again, then I re-installed Avast and now it’s ok. I don’t know, maybe that malware had corrupted some Avast files, is that possible? Anyway, thanks a lot for your help
Are there any further problems
Nope so far. I think it has been fixed
Subject to no further problems
I will remove my tools now and give some recommendations, but, I would like you to run for 24 hours or so and come back if you have any problems
Now the best part of the day ----- Your log now appears clean 
A good workman always cleans up after himself so…The following will implement some cleanup procedures as well as reset System Restore points:
Remove tools
Download and run Delfix
https://dl.dropboxusercontent.com/u/73555776/delfix.JPG
: Keep Java Updated :
WARNING: Java is the #1 exploited program at this time. The Department of Homeland Security recommends that computer users disable Java
See this article
I would recommend that you completely uninstall Java unless you need it to run an important software.
In that instance I would recommend that you disable Java in your browsers until you need it for that software and then enable it. (See How to diasble Java in your web browser and How to unplug Java from the browser)
If you do need to keep Java then download JavaRa
Run the programme and select Remove Java Runtime. Uninstall all versions of Java present
Once done then run it again and select Update Java runtime > Download and install Latest version
https://dl.dropboxusercontent.com/u/73555776/javara.JPG
Now that you are clean, to help protect your computer in the future I recommend that you get the following free programmes:
CryptoPrevent install this programme to lock down and prevent crypto ransome ware
https://dl.dropboxusercontent.com/u/73555776/CryptoPrevent.JPG
Update and run weekly to keep your system clean
Click on the link above to be taken to Unchecky.com
click the very large Download button.
click Save
Click Open folder
Right click on the Unchecky_setup and choose to Run as Administrator
Once open click the Install button.
Then click on Finish
Unchecky is now installed and will help you keep unwanted check boxes unchecked, this is a fire and forget programme 
It is critical to have both a firewall and anti virus to protect your system and to keep them updated.
To learn more about how to protect yourself while on the internet read this little guide Best security practices Keep safe 