Shouldn't....but no software is 100%. I, and many others believe in a layered line of security defense, so I recommend using an on-demand malware scanner as a "just in case."
First, did you run a Full Scan and a Boot-time scan with Avast? They will take a while but allow any infection to go into the Virus Chest.
Make sure your Avast definitions are up to date prior to running the scans.
For an on-demand scanner, check your computer for malware with Malwarebytes’ Anti-Malware (MBAM).
· Download
free http://www.malwarebytes.org/ for an on-demand scanner.
· Double Click mbam-setup.exe to install the application.
· After install, click
update so you have latest database before scanning.
· Under Settings:
o
General: Automatically Save File After Scan Completes is checked off
o
Scanner Settings:
Check all boxeso
Updater: Download and install update if available is checked off
· Once the program has loaded, select "Perform FULL Scan", then click Scan.
· The scan may take some time to finish, so please be patient.
· When the disinfection scan is complete, a log will appear in Notepad and you may be prompted to Restart. (See Extra Note).
· Click the “
remove selected” button to quarantine anything found. You will find the infection details under the Quarantine tab.
· The log is automatically saved by MBAM and can be viewed by clicking the Logs tab in MBAM.
·
Copy & Paste the entire report in your next reply if anything positive comes up.
If MBAM encounters a file that is difficult to remove, you will be presented with 1 of 2 prompts -- Click OK to either and let MBAM proceed with the disinfection process; If asked to restart the computer, please do so immediately.