Finally what made you consider the use of aswMBR.exe, e.g. what symptoms were you experiencing ?
I appreciate your interest in my problem
It started with IE8 suddenly becoming very slow and high CPU usage on my PC when I wasn't actually doing anything. I did a scan using MSE which found Sinowal.gen!Y and PDFjsc.RM
These were removed but the problem didn't resolve. It appeared to my untrained eye that despite virus scans coming up blank that there was unexplained networks and CPU activity on my PC.
I then spent many hours looking at forums and running various tools to inspect my system including Autoruns, HijackThis, GMER and Microsoft's Network Monitor.
Somewhere along this path I found some suggestions that led me to believe I may have a rootkit on my PC (I can't remember where) and came across some references to the aswMBR.exe tool.
Today I discovered that my IP is listed in CBL. This is part of what it said;This IP is infected with, or is NATting for a machine infected with Torpig, also known by Symantec as Anserin.
This was detected by observing this IP attempting to make contact to a Torpig Command and Control server at 188.8.131.52, with contents unique to Torpig C&C command protocols.
Torpig is a banking trojan, specializing in stealing personal information (passwords, account information, etc) from interactions with banking sites.
Torpig is normally dropped by Mebroot. Mebroot is a Rootkit that installs itself into the MBR (Master Boot Record).
Here are the full results of my aswMBR scan (the line is red was red in the scan results);
aswMBR version 0.9.8.986 Copyright(c) 2011 AVAST Software
Run date: 2011-08-29 07:45:17
07:45:17.562 OS Version: Windows 5.1.2600 Service Pack 3
07:45:17.562 Number of processors: 2 586 0x1706
07:45:17.562 ComputerName: KH-S6420-SSD UserName: Kevin
07:45:17.937 Initialize success
07:46:16.875 AVAST engine defs: 11082801
07:48:43.890 Disk 0 (boot) \Device\Harddisk0\DR0 -> \Device\Ide\IAAStorageDevice-1
07:48:43.890 Disk 0 Vendor: INTEL_SS 2CV1 Size: 152627MB BusType: 3
07:48:46.078 Disk 0 MBR read successfully
07:48:46.093 Disk 0 MBR scan
07:48:46.093 Disk 0 Windows VISTA default MBR code
07:48:46.234 Disk 0 scanning sectors +312578048
07:48:46.406 Disk 0 scanning C:\WINDOWS\system32\drivers
07:49:20.312 Service scanning
07:49:21.015 Modules scanning
07:49:53.640 Disk 0 trace - called modules:07:49:53.656 ntkrnlpa.exe CLASSPNP.SYS disk.sys ACPI.sys hal.dll >>UNKNOWN [0x8ae64000]<<
07:49:53.656 1 nt!IofCallDriver -> \Device\Harddisk0\DR0[0x8ae48030]
07:49:53.656 3 CLASSPNP.SYS[b9918fd7] -> nt!IofCallDriver -> \Device\00000095[0x8ae4a640]
07:49:53.656 5 ACPI.sys[b977f620] -> nt!IofCallDriver -> \Device\Ide\IAAStorageDevice-1[0x8aef8028]
07:49:53.765 AVAST engine scan C:\WINDOWS
07:50:27.765 AVAST engine scan C:\WINDOWS\system32
07:54:04.546 AVAST engine scan C:\WINDOWS\system32\drivers
07:54:45.562 AVAST engine scan C:\Documents and Settings\Kevin
08:01:22.109 AVAST engine scan C:\Documents and Settings\All Users
08:02:51.937 Scan finished successfully
09:09:03.546 Disk 0 MBR has been saved successfully to "F:\aswMBR\MBR.dat"
09:09:03.578 The log file has been saved successfully to "F:\aswMBR\aswMBR.txt"