C:\Windows\syswow64\dllhost.exe potentially malicious

[Gamefreak106]

I'm very new here and haven't really experienced anything like this in the past as I typically use this computer for video streaming from youtube or netflix. I looked up this issue and saw several threads about it. It seems fairly common so I decided to post my issue here as well.

This started happening yesterday and it doesn't seem like Bitdefender knows how to handle it even after running a full system scan. I constantly get "Disinfection in progress" messages from Bitdefender pointing out that C:\Windows\syswow64\dllhost.exe was detected as potentially malicious. I'd like to preserve this computer as best I can but I'll need a detailed step-by-step breakdown as I'm very inexperienced with things like this. Can anyone help me?

EDIT: As per the directives in the New User help, I attached a FRST.txt log as well as my Addition.txt log

 

[TwinHeadedEagle]

Hello,



They call me TwinHeadedEagle around here, and I'll be working with you.



Before we start please read and note the following:

• At the top of your post, please click on the "Watch thread" button and make sure to check Watch this thread...and receive email notifications. This will send an email to you as soon as I reply to your topic, allowing me to solve your problem faster.
• Please do not install any new software during the cleaning process other than the tools I provide for you. This can hinder the cleaning process. Please do not perform System Restore or any other restore.
• Instructions I give to you are very simple and made for complete beginner to follow. That's why you need to read through my instructions carefully and completely before executing them.
• Please do not run any tools other than the ones I ask you to, when I ask you to. Some of these tools can be very dangerous if used improperly. Also, if you use a tool that I have not requested you use, it can cause false positives, thereby delaying the complete cleaning of your machine.
  
• All tools we use here are completely clean and do not contain any malware. If your antivirus detects them as malicious, please disable your antivirus and then continue.
• If during the process you run across anything that is not in my instructions, please stop and ask. If any tool is running too much time (few hours), please stop and inform me.
• I visit forum several times at day, making sure to respond to everyone's topic as fast as possible. But bear in mind that I have private life like everyone and I cannot be here 24/7. So please be patient with me. Also, some infections require less, and some more time to be removed completely, so bear this in mind and be patient.
• Please stay with me until the end of all steps and procedures and I declare your system clean. Just because there is a lack of symptoms does not indicate a clean machine. If you solved your problem yourself, set aside two minutes to let me know.
  
• Please attach all report using
  
  button below. Doing this, you make it easier for me to analyze and fix your problem.
  
• Do not ask for help for your business PC. Companies are making revenue via computers, so it is good thing to pay someone to repair it.
• If I don't hear from you within 3 days from this initial or any subsequent post, then this thread will be closed.

Download

Malwarebytes Anti-Rootkit to your desktop.

• Double-click the icon to start the tool.
• It will ask you where to extract it, then it will start.
• Warning! Malwarebytes Anti-Rootkit needs to be run from an account with administrator rights.
• Click in the introduction screen "next" to continue.
• Click in the following screen "Update" to obtain the latest malware definitions.
• Once the update is complete select "Next" and click "Scan".
• When the scan is finished and no malware has been found select "Exit".
• If malware was detected, make sure to check all the items and click "Cleanup". Reboot your computer.
• Open the MBAR folder and paste the content of the following files in your next reply:
  • "mbar-log-{date} (xx-xx-xx).txt"
  • "system-log.txt"

Scan with Farbar Recovery Scan Tool

Please re-run Farbar Recovery Scan Tool to give me a fresh look at your system.

• Right-click on
  
  icon and select
  
  Run as Administrator to start the tool.
  (XP users click run after receipt of Windows Security Warning - Open File).
• Make sure that Addition option is checked.
• Press Scan button and wait.
• The tool will produce two logfiles on your desktop: FRST.txt and Addition.txt.

Please include their content into your next reply.

 

[Gamefreak106]

Good news! After performing your steps, no more pop ups from BitDefender. I'd like to think this is a good sign.

Even still, I followed along with all the instructions. Here are the mbar log and system log files you requested. The FRST and Addition logs are also attached.

------mbar-log-2015-01-02 (15-27-21)------

Malwarebytes Anti-Rootkit BETA 1.08.2.1001
www.malwarebytes.org

Database version: v2015.01.02.08

Windows 7 Service Pack 1 x64 NTFS
Internet Explorer 8.0.7601.17514
Tony :: SPARKS [administrator]

1/2/2015 3:27:21 PM
mbar-log-2015-01-02 (15-27-21).txt

Scan type: Quick scan
Scan options enabled: Anti-Rootkit | Drivers | MBR | Physical Sectors | Memory | Startup | Registry | File System | Heuristics/Extra | Heuristics/Shuriken
Scan options disabled:
Objects scanned: 360823
Time elapsed: 6 minute(s), 52 second(s)

Memory Processes Detected: 0
(No malicious items detected)

Memory Modules Detected: 0
(No malicious items detected)

Registry Keys Detected: 1
HKU\S-1-5-21-1410288600-668038343-599697172-1000_Classes\CLSID\{AB8902B4-09CA-4bb6-B78D-A8F59079A8D5} (Trojan.Poweliks.B) -> Delete on reboot. [1e8211e1e8a14aece2894fb3897701ff]

Registry Values Detected: 0
(No malicious items detected)

Registry Data Items Detected: 0
(No malicious items detected)

Folders Detected: 0
(No malicious items detected)

Files Detected: 0
(No malicious items detected)

Physical Sectors Detected: 0
(No malicious items detected)

(end)

------system-log------

---------------------------------------
Malwarebytes Anti-Rootkit BETA 1.08.2.1001

(c) Malwarebytes Corporation 2011-2012

OS version: 6.1.7601 Windows 7 Service Pack 1 x64

Account is Administrative

Internet Explorer version: 8.0.7601.17514

File system is: NTFS
Disk drives: C:\ DRIVE_FIXED, E:\ DRIVE_FIXED, F:\ DRIVE_FIXED, G:\ DRIVE_FIXED
CPU speed: 1.995000 GHz
Memory total: 12860956672, free: 9437097984

Downloaded database version: v2015.01.02.08
Downloaded database version: v2014.12.30.01
Downloaded database version: v2014.12.06.01
=======================================
Initializing...
------------ Kernel report ------------
01/02/2015 15:27:13
------------ Loaded modules -----------
\SystemRoot\system32\ntoskrnl.exe
\SystemRoot\system32\hal.dll
\SystemRoot\system32\kdcom.dll
\SystemRoot\system32\mcupdate_GenuineIntel.dll
\SystemRoot\system32\PSHED.dll
\SystemRoot\system32\CLFS.SYS
\SystemRoot\system32\CI.dll
\SystemRoot\system32\drivers\Wdf01000.sys
\SystemRoot\system32\drivers\WDFLDR.SYS
\SystemRoot\system32\drivers\ACPI.sys
\SystemRoot\system32\drivers\WMILIB.SYS
\SystemRoot\system32\drivers\msisadrv.sys
\SystemRoot\system32\drivers\pci.sys
\SystemRoot\system32\drivers\vdrvroot.sys
\SystemRoot\System32\drivers\partmgr.sys
\SystemRoot\system32\DRIVERS\trufos.sys
\SystemRoot\system32\DRIVERS\FLTMGR.SYS
\SystemRoot\system32\DRIVERS\compbatt.sys
\SystemRoot\system32\DRIVERS\BATTC.SYS
\SystemRoot\system32\drivers\volmgr.sys
\SystemRoot\System32\drivers\volmgrx.sys
\SystemRoot\System32\drivers\mountmgr.sys
\SystemRoot\system32\drivers\vmbus.sys
\SystemRoot\system32\drivers\winhv.sys
\SystemRoot\system32\drivers\atapi.sys
\SystemRoot\system32\drivers\ataport.SYS
\SystemRoot\system32\drivers\msahci.sys
\SystemRoot\system32\drivers\PCIIDEX.SYS
\SystemRoot\system32\drivers\amdxata.sys
\SystemRoot\system32\drivers\fileinfo.sys
\SystemRoot\system32\DRIVERS\avc3.sys
\SystemRoot\system32\DRIVERS\gzflt.sys
\SystemRoot\System32\Drivers\Ntfs.sys
\SystemRoot\System32\Drivers\msrpc.sys
\SystemRoot\System32\Drivers\ksecdd.sys
\SystemRoot\System32\Drivers\cng.sys
\SystemRoot\System32\drivers\pcw.sys
\SystemRoot\System32\Drivers\Fs_Rec.sys
\SystemRoot\system32\drivers\ndis.sys
\SystemRoot\system32\drivers\NETIO.SYS
\SystemRoot\System32\Drivers\ksecpkg.sys
\SystemRoot\System32\drivers\tcpip.sys
\SystemRoot\System32\drivers\fwpkclnt.sys
\SystemRoot\system32\drivers\vmstorfl.sys
\SystemRoot\system32\drivers\volsnap.sys
\SystemRoot\System32\Drivers\spldr.sys
\SystemRoot\System32\drivers\rdyboost.sys
\SystemRoot\System32\Drivers\mup.sys
\SystemRoot\System32\drivers\hwpolicy.sys
\SystemRoot\System32\DRIVERS\fvevol.sys
\SystemRoot\system32\DRIVERS\disk.sys
\SystemRoot\system32\DRIVERS\CLASSPNP.SYS
\SystemRoot\system32\drivers\cdrom.sys
\SystemRoot\System32\Drivers\Null.SYS
\SystemRoot\System32\Drivers\Beep.SYS
\SystemRoot\System32\drivers\vga.sys
\SystemRoot\System32\drivers\VIDEOPRT.SYS
\SystemRoot\System32\drivers\watchdog.sys
\SystemRoot\System32\DRIVERS\RDPCDD.sys
\SystemRoot\system32\drivers\rdpencdd.sys
\SystemRoot\system32\drivers\rdprefmp.sys
\SystemRoot\System32\Drivers\Msfs.SYS
\SystemRoot\System32\Drivers\Npfs.SYS
\??\c:\program files\common files\bitdefender\bitdefender firewall\bdfndisf6.sys
\??\C:\Program Files\Common Files\Bitdefender\Bitdefender Firewall\bdfwfpf.sys
\SystemRoot\system32\DRIVERS\tdx.sys
\SystemRoot\system32\DRIVERS\TDI.SYS
\SystemRoot\system32\drivers\afd.sys
\SystemRoot\System32\DRIVERS\netbt.sys
\SystemRoot\system32\DRIVERS\wfplwf.sys
\SystemRoot\system32\DRIVERS\pacer.sys
\SystemRoot\system32\DRIVERS\vwififlt.sys
\SystemRoot\system32\DRIVERS\vpcnfltr.sys
\SystemRoot\system32\DRIVERS\netbios.sys
\SystemRoot\system32\DRIVERS\wanarp.sys
\SystemRoot\system32\drivers\vpcvmm.sys
\SystemRoot\system32\drivers\termdd.sys
\SystemRoot\system32\DRIVERS\rdbss.sys
\SystemRoot\system32\drivers\nsiproxy.sys
\SystemRoot\system32\drivers\mssmbios.sys
\SystemRoot\System32\drivers\discache.sys
\SystemRoot\system32\drivers\csc.sys
\SystemRoot\System32\Drivers\dfsc.sys
\SystemRoot\system32\DRIVERS\blbdrive.sys
\??\C:\Program Files (x86)\ASUS\ATK Package\ATK WMIACPI\atkwmiacpi64.sys
\SystemRoot\system32\DRIVERS\tunnel.sys
\SystemRoot\system32\DRIVERS\nvlddmkm.sys
\SystemRoot\System32\drivers\dxgkrnl.sys
\SystemRoot\System32\drivers\dxgmms1.sys
\SystemRoot\system32\drivers\HDAudBus.sys
\SystemRoot\system32\DRIVERS\HECIx64.sys
\SystemRoot\system32\drivers\usbehci.sys
\SystemRoot\system32\drivers\USBPORT.SYS
\SystemRoot\system32\DRIVERS\athrx.sys
\SystemRoot\system32\DRIVERS\vwifibus.sys
\SystemRoot\system32\DRIVERS\FLxHCIc.sys
\SystemRoot\system32\DRIVERS\USBD.SYS
\SystemRoot\system32\DRIVERS\Rt64win7.sys
\SystemRoot\system32\DRIVERS\i8042prt.sys
\SystemRoot\system32\DRIVERS\fspad_win764.sys
\SystemRoot\system32\DRIVERS\mouclass.sys
\SystemRoot\system32\DRIVERS\kbdclass.sys
\SystemRoot\system32\DRIVERS\GEARAspiWDM.sys
\SystemRoot\system32\DRIVERS\CmBatt.sys
\SystemRoot\system32\DRIVERS\intelppm.sys
\SystemRoot\system32\drivers\wmiacpi.sys
\SystemRoot\system32\drivers\CompositeBus.sys
\SystemRoot\system32\DRIVERS\AgileVpn.sys
\SystemRoot\system32\DRIVERS\rasl2tp.sys
\SystemRoot\system32\DRIVERS\ndistapi.sys
\SystemRoot\system32\DRIVERS\ndiswan.sys
\SystemRoot\system32\DRIVERS\raspppoe.sys
\SystemRoot\system32\DRIVERS\raspptp.sys
\SystemRoot\system32\DRIVERS\rassstp.sys
\SystemRoot\system32\DRIVERS\rdpbus.sys
\SystemRoot\system32\drivers\swenum.sys
\SystemRoot\system32\drivers\ks.sys
\SystemRoot\system32\DRIVERS\btath_bus.sys
\SystemRoot\system32\drivers\umbus.sys
\SystemRoot\system32\DRIVERS\vpcusb.sys
\SystemRoot\system32\DRIVERS\usbrpm.sys
\SystemRoot\system32\DRIVERS\vpchbus.sys
\SystemRoot\system32\DRIVERS\usbhub.sys
\SystemRoot\System32\Drivers\NDProxy.SYS
\SystemRoot\system32\drivers\HdAudio.sys
\SystemRoot\system32\drivers\portcls.sys
\SystemRoot\system32\drivers\drmk.sys
\SystemRoot\system32\drivers\ksthunk.sys
\SystemRoot\system32\drivers\RTKVHD64.sys
\SystemRoot\system32\drivers\MBfilt64.sys
\SystemRoot\system32\DRIVERS\FLxHCIh.sys
\SystemRoot\System32\Drivers\fastfat.SYS
\SystemRoot\system32\DRIVERS\btfilter.sys
\SystemRoot\System32\Drivers\BTHUSB.sys
\SystemRoot\System32\Drivers\bthport.sys
\SystemRoot\System32\win32k.sys
\SystemRoot\System32\drivers\Dxapi.sys
\SystemRoot\system32\DRIVERS\usbccgp.sys
\SystemRoot\system32\DRIVERS\nvstusb.sys
\SystemRoot\System32\Drivers\usbvideo.sys
\SystemRoot\system32\DRIVERS\monitor.sys
\SystemRoot\system32\DRIVERS\rfcomm.sys
\SystemRoot\system32\drivers\BthEnum.sys
\SystemRoot\system32\DRIVERS\bthpan.sys
\SystemRoot\system32\DRIVERS\btath_rcp.sys
\SystemRoot\system32\DRIVERS\HIDCLASS.SYS
\SystemRoot\system32\DRIVERS\HIDPARSE.SYS
\SystemRoot\system32\drivers\btath_avdt.sys
\SystemRoot\system32\drivers\btath_a2dp.sys
\SystemRoot\system32\DRIVERS\btath_hcrp.sys
\SystemRoot\system32\DRIVERS\btath_flt.sys
\SystemRoot\system32\DRIVERS\btath_lwflt.sys
\SystemRoot\System32\Drivers\crashdmp.sys
\SystemRoot\System32\Drivers\dump_dumpata.sys
\SystemRoot\System32\Drivers\dump_msahci.sys
\SystemRoot\System32\Drivers\dump_dumpfve.sys
\SystemRoot\System32\TSDDD.dll
\SystemRoot\System32\cdd.dll
\SystemRoot\system32\drivers\luafv.sys
\SystemRoot\system32\DRIVERS\avckf.sys
\SystemRoot\system32\DRIVERS\lltdio.sys
\SystemRoot\system32\DRIVERS\nwifi.sys
\SystemRoot\system32\DRIVERS\ndisuio.sys
\SystemRoot\system32\DRIVERS\rspndr.sys
\??\C:\Program Files (x86)\ASUS\ATK Package\ATKGFNEX\ASMMAP64.sys
\SystemRoot\system32\drivers\HTTP.sys
\SystemRoot\system32\DRIVERS\bowser.sys
\SystemRoot\System32\drivers\mpsdrv.sys
\SystemRoot\system32\DRIVERS\mrxsmb.sys
\SystemRoot\system32\DRIVERS\mrxsmb10.sys
\SystemRoot\system32\DRIVERS\mrxsmb20.sys
\SystemRoot\system32\drivers\peauth.sys
\SystemRoot\System32\Drivers\secdrv.SYS
\SystemRoot\System32\DRIVERS\srvnet.sys
\SystemRoot\System32\drivers\tcpipreg.sys
\SystemRoot\System32\DRIVERS\srv2.sys
\SystemRoot\System32\DRIVERS\srv.sys
\SystemRoot\system32\DRIVERS\asyncmac.sys
\??\C:\Windows\system32\drivers\mbamchameleon.sys
\??\C:\Windows\system32\drivers\MBAMSwissArmy.sys
\Windows\System32\ntdll.dll
\Windows\System32\smss.exe
\Windows\System32\apisetschema.dll
----------- End -----------
Done!
<<<1>>>
Upper Device Name: \Device\Harddisk1\DR1
Upper Device Object: 0xfffffa800a09f060
Upper Device Driver Name: \Driver\Disk\
Lower Device Name: \Device\Ide\IdeDeviceP1T0L0-1\
Lower Device Object: 0xfffffa8009ded060
Lower Device Driver Name: \Driver\atapi\
<<<1>>>
Upper Device Name: \Device\Harddisk0\DR0
Upper Device Object: 0xfffffa800a080790
Upper Device Driver Name: \Driver\Disk\
Lower Device Name: \Device\Ide\IdeDeviceP0T0L0-0\
Lower Device Object: 0xfffffa8009de0060
Lower Device Driver Name: \Driver\atapi\
<<<2>>>
Physical Sector Size: 512
Drive: 0, DevicePointer: 0xfffffa800a080790, DeviceName: \Device\Harddisk0\DR0\, DriverName: \Driver\Disk\
--------- Disk Stack ------
DevicePointer: 0xfffffa8009f7c890, DeviceName: Unknown, DriverName: \Driver\partmgr\
DevicePointer: 0xfffffa800a080790, DeviceName: \Device\Harddisk0\DR0\, DriverName: \Driver\Disk\
DevicePointer: 0xfffffa8009dbd160, DeviceName: Unknown, DriverName: \Driver\ACPI\
DevicePointer: 0xfffffa8009de0060, DeviceName: \Device\Ide\IdeDeviceP0T0L0-0\, DriverName: \Driver\atapi\
------------ End ----------
Alternate DeviceName: \Device\Harddisk0\DR0\, DriverName: \Driver\Disk\
Upper DeviceData: 0x0, 0x0, 0x0
Lower DeviceData: 0x0, 0x0, 0x0
<<<3>>>
Volume: C:
File system type: NTFS
SectorSize = 512, ClusterSize = 4096, MFTRecordSize = 1024, MFTIndexSize = 4096 bytes
<<<2>>>
<<<3>>>
Volume: C:
File system type: NTFS
SectorSize = 512, ClusterSize = 4096, MFTRecordSize = 1024, MFTIndexSize = 4096 bytes
Scanning drivers directory: C:\WINDOWS\SYSTEM32\drivers...
Done!
Drive 0
This is a System drive
Scanning MBR on drive 0...
Inspecting partition table:
MBR Signature: 55AA
Disk Signature: D1D2BA50

Partition information:

Partition 0 type is Primary (0x7)
Partition is ACTIVE.
Partition starts at LBA: 2048 Numsec = 204800
Partition file system is NTFS
Partition is bootable

Partition 1 type is Primary (0x7)
Partition is NOT ACTIVE.
Partition starts at LBA: 206848 Numsec = 976564224

Partition 2 type is Empty (0x0)
Partition is NOT ACTIVE.
Partition starts at LBA: 0 Numsec = 0

Partition 3 type is Empty (0x0)
Partition is NOT ACTIVE.
Partition starts at LBA: 0 Numsec = 0

Disk Size: 500107862016 bytes
Sector size: 512 bytes

Done!
Physical Sector Size: 512
Drive: 1, DevicePointer: 0xfffffa800a09f060, DeviceName: \Device\Harddisk1\DR1\, DriverName: \Driver\Disk\
--------- Disk Stack ------
DevicePointer: 0xfffffa800a09fb90, DeviceName: Unknown, DriverName: \Driver\partmgr\
DevicePointer: 0xfffffa800a09f060, DeviceName: \Device\Harddisk1\DR1\, DriverName: \Driver\Disk\
DevicePointer: 0xfffffa8009de3610, DeviceName: Unknown, DriverName: \Driver\ACPI\
DevicePointer: 0xfffffa8009ded060, DeviceName: \Device\Ide\IdeDeviceP1T0L0-1\, DriverName: \Driver\atapi\
------------ End ----------
Alternate DeviceName: \Device\Harddisk1\DR1\, DriverName: \Driver\Disk\
Upper DeviceData: 0x0, 0x0, 0x0
Lower DeviceData: 0x0, 0x0, 0x0
Drive 1
Scanning MBR on drive 1...
Inspecting partition table:
MBR Signature: 55AA
Disk Signature: 38601C96

Partition information:

Partition 0 type is Other (0xc)
Partition is NOT ACTIVE.
Partition starts at LBA: 2048 Numsec = 52428800

Partition 1 type is Primary (0x7)
Partition is ACTIVE.
Partition starts at LBA: 52430848 Numsec = 586057728
Partition file system is NTFS
Partition is bootable

Partition 2 type is Extended with LBA (0xf)
Partition is NOT ACTIVE.
Partition starts at LBA: 638488576 Numsec = 826656768

Partition 3 type is Empty (0x0)
Partition is NOT ACTIVE.
Partition starts at LBA: 0 Numsec = 0

Disk Size: 750156374016 bytes
Sector size: 512 bytes

Done!
Infected: HKU\S-1-5-21-1410288600-668038343-599697172-1000_Classes\CLSID\{AB8902B4-09CA-4bb6-B78D-A8F59079A8D5} --> [Trojan.Poweliks.B]
Scan finished
Creating System Restore point...
Cleaning up...
Executing an action cmd.exe...
Success!
Executing an action cmd.exe...
Success!
Removal successful. No system shutdown is required.
=======================================