aswMBR is the rootkit scanner that scans for TDL4/3, MBRoot (Sinowal), Whistler and other rootkits. aswMBR is the Anti-root application developed by Avast. This Program user Interface may look like old . But it has all the tools within this one package to detect and remove the rootkits in Windows. So don’t be fooled with user Interface. Get the full Avast! Antivirus 8 to get full system protection for free