Hi, I believe I got infection in my PC now. Win 8.1 pro 64 bit The problem so far found on Firefox (30.0) only. Firefox has Ad Block Plus plugin installed When browsing site that have google ads banner (I live in japan so I expect to see some Japanese site ads) , the banners will be replaced into some Russian or greek language ? banner with same sites, browsing with IE or chrome get correctly google ads banner. When browsing site that don't have google ads banner, warning popup may be shown. firefox may freeze after popup shown and it always re-pop after click stop script or continue I tried to scan with Malwarebytes Anti-Malware (Free edition) , it always found PUP.Optional.Delta.A at "C:\Users\my name\AppData\Roaming\Mozilla\Firefox\Profiles\bevxfsct.default\prefs.js" (after saw replaced banner in firefox)Scan with Avast (Free), AVG (Free), Windows Defender returned nothing much ..... Thank you in advance for any help. Best regards, Anuwat FRST file here FRST.txt Addition file here Addition.txt
