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Cant delete "Threat:Rootkit:system modification"

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#1 tcommy


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Posted 31 May 2011 - 09:28 PM


Avast constantly picks up 'Threat:Rootkit:system modification' which is showing the file name c:\windows\system32\drivers\sptd.sys

Avast actions to delete it and restarts the computer to scan, but when windows starts, it again shows the same issue and asks to restart. It doesn't seem to be running any slower, but am afraid that something might happen if I dont get rid of it first.

Can some one please help me with this.


Edited by Budapest, 31 May 2011 - 10:14 PM.
Moved from Win7 ~Budapest

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#2 GX5000


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Posted 06 June 2011 - 10:37 AM

It's CD/DVD emulation file.
If you haven't installed Daemon tools or a burning software that has emulation you
may want to go into safe mode and delete the file and remove the registry entry.

My guess it's just a false positive you're getting.

#3 quietman7


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Posted 06 June 2011 - 02:42 PM

sptd.sys is a legitimate driver used by CD Emulator programs like Daemon Tools, Alchohol 120%, Astroburn, AnyDVD. The file is often detected as suspicisous by security tools because CD Emulators use rootkit-like techniques to hide from other applications.

CD Emulators often interfere with security scanning tools and this interference can produce misleading or inaccurate scan results, false detection of legitimate file, cause unexpected crashes, BSODs, and general dross. This 'dross' often makes it hard to differentiate between genuine malicious rootkits and the legitimate drivers used by CD Emulators.
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