wekcome to the forum. i would suggest you do a svan with malwarebytes antimalware as afirst step.
http://www.filehippo.com/download_malwarebytes_anti_malware/
download install and do a scan, don’t forget to remove what it finds, and a sysytem reboot might be necessary.
second upload that file aswMBr flagging to virustotal.com and post the rsult here.
http://www.virustotal.com/
good luck and let us know one the progress.