hola amigos , he utilizado la erramienta de abast y he encontrado malware en el bmr
aswMBR version 1.0.1.2041 Copyright(c) 2014 AVAST Software
Run date: 2014-10-06 19:58:01
-----------------------------
19:58:01.171 OS Version: Windows x64 6.1.7601 Service Pack 1
19:58:01.171 Number of processors: 2 586 0x603
19:58:01.172 ComputerName: PILAR-PC UserName: Pilar
19:58:02.029 Initialize success
19:58:02.030 VM: initialized successfully
19:58:02.049 VM: Amd CPU supported virtualized
19:58:18.216 VM: supported disk I/O storport.sys
19:58:21.549 AVAST engine defs: 14100600
19:58:32.980 Disk 0 (boot) \Device\Harddisk0\DR0 -> \Device\0000005c
19:58:32.987 Disk 0 Vendor: WDC_WD50 05.0 Size: 476940MB BusType: 3
19:58:33.082 Disk 0 MBR read successfully
19:58:33.089 Disk 0 MBR scan
19:58:33.100 Disk 0 Windows 7 default MBR code
19:58:33.109 Disk 0 Partition 1 00 27 Hidden NTFS WinRE NTFS 17000 MB offset 2048
19:58:33.124 Disk 0 Partition 2 80 (A) 07 HPFS/NTFS NTFS 100 MB offset 34818048
19:58:33.128 Disk 0 default boot code
19:58:33.143 Disk 0 Partition 3 00 07 HPFS/NTFS NTFS 229918 MB offset 35022848
19:58:33.168 Disk 0 Partition 4 00 07 HPFS/NTFS NTFS 229920 MB offset 505894912
19:58:33.199 Disk 0 scanning C:\Windows\system32\drivers
19:58:40.724 Service scanning
19:58:58.479 Modules scanning
19:58:58.497 Disk 0 trace - called modules:
19:58:58.529 ntoskrnl.exe CLASSPNP.SYS disk.sys ACPI.sys storport.sys hal.dll nvstor64.sys
19:58:58.541 1 nt!IofCallDriver -> \Device\Harddisk0\DR0[0xfffffa80044ae470]
19:58:58.555 3 CLASSPNP.SYS[fffff8800194343f] -> nt!IofCallDriver -> [0xfffffa80043a37a0]
19:58:58.561 5 ACPI.sys[fffff88000f177a1] -> nt!IofCallDriver -> \Device\0000005c[0xfffffa80043a3060]
19:58:59.450 AVAST engine scan C:\Windows
19:59:01.459 AVAST engine scan C:\Windows\system32
20:01:24.788 AVAST engine scan C:\Windows\system32\drivers
20:01:42.908 AVAST engine scan C:\Users\Pilar
20:03:24.949 File: C:\Users\Pilar\AppData\Local\Temp\tex.exe **INFECTED** Win32:Malware-gen
20:05:16.955 AVAST engine scan C:\ProgramData
20:07:27.179 Scan finished successfully
20:09:15.643 Verifying
20:09:25.672 Disk 0 Windows 601 MBR fixed successfully
20:11:05.842 Disk 0 (boot) \Device\Harddisk0\DR0 -> \Device\0000005c
20:11:05.857 Disk 0 Vendor: WDC_WD50 05.0 Size: 476940MB BusType: 3
20:11:06.039 Disk 0 MBR read successfully
20:11:06.044 Disk 0 MBR scan
20:11:06.048 Disk 0 Windows 7 default MBR code
20:11:06.059 Disk 0 Partition 1 00 27 Hidden NTFS WinRE NTFS 17000 MB offset 2048
20:11:06.082 Disk 0 Partition 2 80 (A) 07 HPFS/NTFS NTFS 100 MB offset 34818048
20:11:06.093 Disk 0 default boot code
20:11:06.109 Disk 0 Partition 3 00 07 HPFS/NTFS NTFS 229918 MB offset 35022848
20:11:06.135 Disk 0 Partition 4 00 07 HPFS/NTFS NTFS 229920 MB offset 505894912
20:11:06.241 Disk 0 scanning C:\Windows\system32\drivers
20:11:22.910 Service scanning
20:11:38.221 Modules scanning
20:11:38.244 Disk 0 trace - called modules:
20:11:38.278 ntoskrnl.exe CLASSPNP.SYS disk.sys ACPI.sys storport.sys hal.dll nvstor64.sys
20:11:38.292 1 nt!IofCallDriver -> \Device\Harddisk0\DR0[0xfffffa80044ae470]
20:11:38.305 3 CLASSPNP.SYS[fffff8800194343f] -> nt!IofCallDriver -> [0xfffffa80043a37a0]
20:11:38.313 5 ACPI.sys[fffff88000f177a1] -> nt!IofCallDriver -> \Device\0000005c[0xfffffa80043a3060]
20:11:38.916 AVAST engine scan C:\Windows
20:11:44.324 AVAST engine scan C:\Windows\system32
20:13:41.390 AVAST engine scan C:\Windows\system32\drivers
20:13:51.014 AVAST engine scan C:\Users\Pilar
20:15:08.494 File: C:\Users\Pilar\AppData\Local\Temp\tex.exe **INFECTED** Win32:Malware-gen
20:16:34.225 AVAST engine scan C:\ProgramData
20:17:32.146 Scan finished successfully
20:21:40.551 Disk 0 MBR has been saved successfully to "C:\Users\Pilar\Documents\MBR.dat"
20:21:40.556 The log file has been saved successfully to "C:\Users\Pilar\Documents\aswMBR.txt"
pero lo vuelvo a pasar y siempre me sale el archivo infectado, alguien sabe por que?