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Infected External HDD! Need Help!


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2 replies to this topic

#1 Rizaldus

Rizaldus

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Posted 06 October 2014 - 05:02 AM

Alright, so a few months ago I stumbled upon a rootkit which made my pc unbearable to use and eventually broke it down. After having it fixed, I just realized that I had plugged in my External HDD while my PC still had the rootkit from before. I'm positively sure that it now has the rootkit too. What I'm asking is, if there is a way to safely clean/remove the rootkit from the External HDD without damaging and/or formatting it due to having valuable information inside it.

 

I have disabled Autorun/Autoplay

Installed the following:

GMER

Malwarebytes

Kaspersky TDSSKiller

Sophos Anti-Rootkit

Avast Anti-Rootkit

 

I scanned the External HDD with GMER and here are the logs:

GMER 2.1.19357 - http://www.gmer.net
Rootkit scan 2014-10-06 13:45:00
Windows 6.1.7601 Service Pack 1 \Device\Harddisk0\DR0 -> \Device\Ide\IdeDeviceP3T0L0-5 WDC_WD5000AAKX-22ERMA0 rev.17.01H17 465.76GB
Running: 00jz3806.exe; Driver: C:\Users\ANGEL&~1\AppData\Local\Temp\kxldrkob.sys




---- System - GMER 2.1 ----


SSDT   91A539AE                                                                      ZwCreateSection
SSDT   91A539B8                                                                      ZwRequestWaitReplyPort
SSDT   91A539B3                                                                      ZwSetContextThread
SSDT   91A539BD                                                                      ZwSetSecurityObject
SSDT   91A539C2                                                                      ZwSystemDebugControl
SSDT   91A5394F                                                                      ZwTerminateProcess


---- Kernel code sections - GMER 2.1 ----


.text  ntkrnlpa.exe!ZwSaveKey + 13C1                                                 82A45339 1 Byte  [06]
.text  ntkrnlpa.exe!KiDispatchInterrupt + 5A2                                        82A7ED52 19 Bytes  [E0, 0F, BA, F0, 07, 73, 09, ...] {LOOPNZ 0x11; MOV EDX, 0x97307f0; MOV CR4, EAX; OR AL, 0x80; MOV CR4, EAX; RET ; MOV ECX, CR3}
.text  ntkrnlpa.exe!KeRemoveQueueEx + 11F7                                           82A85EEC 4 Bytes  [AE, 39, A5, 91]
.text  ntkrnlpa.exe!KeRemoveQueueEx + 1553                                           82A86248 4 Bytes  [B8, 39, A5, 91]
.text  ntkrnlpa.exe!KeRemoveQueueEx + 1597                                           82A8628C 4 Bytes  [B3, 39, A5, 91] {MOV BL, 0x39; MOVSD ; XCHG ECX, EAX}
.text  ntkrnlpa.exe!KeRemoveQueueEx + 1613                                           82A86308 4 Bytes  [BD, 39, A5, 91]
.text  ntkrnlpa.exe!KeRemoveQueueEx + 1667                                           82A8635C 4 Bytes  [C2, 39, A5, 91] {RET 0xa539; XCHG ECX, EAX}
.text  ...                                                                           


---- User code sections - GMER 2.1 ----


.text  C:\Program Files\Garena Plus\ggdllhost.exe[2740] ntdll.dll!DbgUserBreakPoint  76EC40EC 1 Byte  [C3]
.text  C:\Program Files\Garena Plus\ggdllhost.exe[2740] ntdll.dll!DbgBreakPoint      76EC40F0 1 Byte  [C3]


---- EOF - GMER 2.1 ----

Although I did scan the PC with Avast Anti-Rootkit and it showed a red line with the word "Hidden" here is the log:

aswMBR version 1.0.1.2041 Copyright(c) 2014 AVAST Software
Run date: 2014-10-05 07:50:21
-----------------------------
07:50:21.370    OS Version: Windows 6.1.7601 Service Pack 1
07:50:21.370    Number of processors: 2 586 0x6B02
07:50:21.373    ComputerName: FAMILYCOMPUTER  UserName: PC
07:50:23.084    Initialize success
07:50:23.154    VM: initialized successfully
07:50:23.176    VM: Amd CPU virtualization not supported 
07:52:03.244    Disk 0 (boot) \Device\Harddisk0\DR0 -> \Device\Ide\IdeDeviceP3T0L0-5
07:52:03.247    Disk 0 Vendor: WDC_WD5000AAKX-22ERMA0 17.01H17 Size: 476940MB BusType: 11
07:52:03.463    Disk 0 MBR read successfully
07:52:03.466    Disk 0 MBR scan
07:52:03.469    Disk 0 Windows 7 default MBR code
07:52:03.474    Disk 0 Partition 1 80 (A) 07    HPFS/NTFS NTFS       476938 MB offset 2048
07:52:03.479    Disk 0 Boot: NTFS     code=1
07:52:03.485    Disk 0 scanning sectors +976771072
07:52:03.552    Disk 0 scanning C:\Windows\system32\drivers
07:52:13.509    Service scanning
07:52:27.898    Service MEMSWEEP2 C:\Windows\system32\534D.tmp **HIDDEN**
07:52:52.045    Modules scanning
07:53:28.176    Disk 0 trace - called modules:
07:53:28.210    ntkrnlpa.exe CLASSPNP.SYS disk.sys ACPI.sys halmacpi.dll ataport.SYS PCIIDEX.SYS msahci.sys 
07:53:28.223    1 nt!IofCallDriver -> \Device\Harddisk0\DR0[0x854ff798]
07:53:28.231    3 CLASSPNP.SYS[8839f59e] -> nt!IofCallDriver -> [0x85012c10]
07:53:28.248    5 ACPI.sys[87dae3d4] -> nt!IofCallDriver -> \Device\Ide\IdeDeviceP3T0L0-5[0x8507c908]
07:53:28.255    Scan finished successfully
07:57:38.137    Disk 0 MBR has been saved successfully to "C:\Users\PC\Documents\MBR.dat"
07:57:38.148    The log file has been saved successfully to "C:\Users\PC\Documents\aswMBR.txt"

Best Regards,

-Riz



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Posted 11 October 2014 - 05:05 AM

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Posted 16 October 2014 - 05:10 AM

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