Hi, A possible design flaw i encountered during my research on Microsoft's AntiSpyware(Beta Version). Summary: Bypassing Microsoft's AntiSpyware alerting system on programs trying to access Registry. Details: When a program is trying to write to Registry Startup Keys like for example HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run a pop-up message is produced by Microsoft's AntiSpyware informing the user for a change at Windows Registry.Although this is working when the registry key has a file extention,Microsoft's AntiSpyware doesnt bother when the same Registry key doesnt have an extention.That wouldnt be a problem if Windows itself didnt execute the file in the registry key with no extention. But they do! So for example: "HKEY_LOCAL_MACHINE/SOFTWARE/Microsoft/Windows/CurrentVersion/Run" With key "Emmgav", "C:\Windows\repair\svc.exe" and "HKEY_LOCAL_MACHINE/SOFTWARE/Microsoft/Windows/CurrentVersion/Run" With key "Emmgav", "C:\Windows\repair\svc" For Microsoft AntiSpyware isnt exactly the same! Vulnerable Versions: Tested on Microsoft AntiSpyware (BETA) 1.0.615 Exploit: Design Flaw, exploit not needed. Cheers, Emmanouil Gavriil(manolisgavriil@xxxxxxxxxxx)
