Solved high cpu usage from rundlhost.exe and other Syswow32 executables.

[TheBardKen]

In the evening following the New Years, I was browsing online and noticed my fan started running faster than usual so I checked my task manager and noticed a few programs running that were unfamiliar to me. I googled them and in the time it took to find out what they were, the amount of these programs running had doubled, and had taken all of my CPU with them.

The following programs are the culprits: I have given the Image Name and Description

svchost.exe*32 (host Process for windows services)
rundll.exe*32 (Windows host process)
regsvr.exe*32 (Microsoft(c) register server)
dllhost.exe*32 (COM surrogate)

These are all that I've noticed. It's becoming quite worrying. I've posted the logs made by FRST, they are attached below.
The only programs I ran to help were Anti-Malware Bytes, and JRT, in that order.

 

[argus]

Helllo,

Before we begin, please note the following:

• I will working be on your Malware issues, this may or may not, solve other issues you have with your machine.
• The logs can take some time to research, so please be patient with me.
• Stay with the topic until I tell you that your system is clean. Missing symptoms does not mean that everything is okay.
• Instructions that I give are for your system only!
• Please do not run any tools until requested ! The reason for this is so I know what is going on with the machine at any time. Some programs can interfere with others and hamper the recovery process.
• Please perform all steps in the order received. If you can't understand something don't hesitate to ask.
• Again I would like to remind you to make no further changes to your computer unless I direct you to do so. I will not help you if you do not follow my instructions.

You need to exit MalwareBytes in your tray area. Right click and select Exit.


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"

 

[TheBardKen]

Here's the Dated Log

Malwarebytes Anti-Rootkit BETA 1.08.2.1001
www.malwarebytes.org

Database version: v2015.01.01.02

Windows 7 Service Pack 1 x64 NTFS
Internet Explorer 11.0.9600.17501
KeN :: DESIDERATA [administrator]

1/1/2015 11:37:11 AM
mbar-log-2015-01-01 (11-37-11).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: 395493
Time elapsed: 31 minute(s), 14 second(s)

Memory Processes Detected: 0
(No malicious items detected)

Memory Modules Detected: 0
(No malicious items detected)

Registry Keys Detected: 1
HKU\S-1-5-21-2078339289-3773522293-2643299643-1001_Classes\CLSID\{AB8902B4-09CA-4bb6-B78D-A8F59079A8D5} (Trojan.Poweliks.B) -> Delete on reboot. [7eb834be1f6a15214c1fea1820e0827e]

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 text

---------------------------------------
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: 11.0.9600.17501

File system is: NTFS
Disk drives: C:\ DRIVE_FIXED, D:\ DRIVE_FIXED
CPU speed: 2.893000 GHz
Memory total: 8487546880, free: 3347161088

---------------------------------------
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: 11.0.9600.17501

File system is: NTFS
Disk drives: C:\ DRIVE_FIXED, D:\ DRIVE_FIXED
CPU speed: 2.893000 GHz
Memory total: 8487546880, free: 3142860800

Downloaded database version: v2015.01.01.02
Downloaded database version: v2014.12.30.01
Downloaded database version: v2014.12.06.01
=======================================
Initializing...
------------ Kernel report ------------
01/01/2015 11:36:43
------------ 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\CLASSPNP.SYS
\SystemRoot\System32\drivers\cgfnuw.sys
\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\iusb3hcs.sys
\SystemRoot\System32\drivers\partmgr.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\iaStor.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\fltmgr.sys
\SystemRoot\system32\drivers\fileinfo.sys
\SystemRoot\system32\DRIVERS\MpFilter.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\volsnap.sys
\SystemRoot\System32\Drivers\spldr.sys
\SystemRoot\System32\drivers\rdyboost.sys
\SystemRoot\system32\DRIVERS\nvpciflt.sys
\SystemRoot\System32\Drivers\mup.sys
\SystemRoot\System32\DRIVERS\LhdX64.sys
\SystemRoot\System32\drivers\hwpolicy.sys
\SystemRoot\System32\DRIVERS\fvevol.sys
\SystemRoot\system32\drivers\fbfmon.sys
\SystemRoot\system32\drivers\disk.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
\SystemRoot\system32\DRIVERS\tdx.sys
\SystemRoot\system32\DRIVERS\TDI.SYS
\SystemRoot\System32\DRIVERS\netbt.sys
\SystemRoot\system32\drivers\afd.sys
\SystemRoot\system32\DRIVERS\wfplwf.sys
\SystemRoot\system32\DRIVERS\pacer.sys
\SystemRoot\system32\DRIVERS\vwififlt.sys
\SystemRoot\system32\DRIVERS\netbios.sys
\SystemRoot\system32\DRIVERS\wanarp.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\dfsc.sys
\SystemRoot\system32\drivers\BPntDrv.sys
\SystemRoot\system32\drivers\BOOTVID.dll
\SystemRoot\system32\DRIVERS\blbdrive.sys
\SystemRoot\system32\DRIVERS\tunnel.sys
\SystemRoot\system32\DRIVERS\nvlddmkm.sys
\SystemRoot\System32\drivers\dxgkrnl.sys
\SystemRoot\System32\drivers\dxgmms1.sys
\SystemRoot\system32\DRIVERS\igdkmd64.sys
\SystemRoot\system32\DRIVERS\iusb3xhc.sys
\SystemRoot\system32\DRIVERS\USBD.SYS
\SystemRoot\system32\DRIVERS\HECIx64.sys
\SystemRoot\system32\drivers\usbehci.sys
\SystemRoot\system32\drivers\USBPORT.SYS
\SystemRoot\system32\DRIVERS\HDAudBus.sys
\SystemRoot\system32\DRIVERS\L1C62x64.sys
\SystemRoot\system32\DRIVERS\bcmwl664.sys
\SystemRoot\system32\DRIVERS\vwifibus.sys
\SystemRoot\system32\DRIVERS\i8042prt.sys
\SystemRoot\system32\DRIVERS\kbdclass.sys
\SystemRoot\system32\DRIVERS\ETD.sys
\SystemRoot\system32\DRIVERS\mouclass.sys
\SystemRoot\system32\DRIVERS\AcpiVpc.sys
\SystemRoot\system32\DRIVERS\CmBatt.sys
\SystemRoot\system32\DRIVERS\GEARAspiWDM.sys
\SystemRoot\system32\DRIVERS\intelppm.sys
\SystemRoot\system32\DRIVERS\CompositeBus.sys
\SystemRoot\system32\DRIVERS\clwvd.sys
\SystemRoot\system32\DRIVERS\ks.sys
\SystemRoot\system32\drivers\ksthunk.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\hamachi.sys
\SystemRoot\system32\DRIVERS\swenum.sys
\SystemRoot\system32\DRIVERS\umbus.sys
\SystemRoot\system32\drivers\nvvad64v.sys
\SystemRoot\system32\drivers\portcls.sys
\SystemRoot\system32\drivers\drmk.sys
\SystemRoot\system32\DRIVERS\usbhub.sys
\SystemRoot\System32\Drivers\NDProxy.SYS
\SystemRoot\system32\DRIVERS\iusb3hub.sys
\SystemRoot\system32\drivers\CHDRT64.sys
\SystemRoot\system32\DRIVERS\IntcDAud.sys
\SystemRoot\System32\Drivers\crashdmp.sys
\SystemRoot\System32\Drivers\dump_iaStor.sys
\SystemRoot\System32\Drivers\dump_dumpfve.sys
\SystemRoot\System32\win32k.sys
\SystemRoot\System32\drivers\Dxapi.sys
\SystemRoot\system32\DRIVERS\usbccgp.sys
\SystemRoot\System32\Drivers\vm331avs.sys
\SystemRoot\System32\Drivers\STREAM.SYS
\SystemRoot\system32\DRIVERS\hidusb.sys
\SystemRoot\system32\DRIVERS\HIDCLASS.SYS
\SystemRoot\system32\DRIVERS\HIDPARSE.SYS
\SystemRoot\system32\DRIVERS\kbdhid.sys
\SystemRoot\system32\DRIVERS\mouhid.sys
\SystemRoot\system32\drivers\bcbtums.sys
\SystemRoot\System32\Drivers\BTHUSB.sys
\SystemRoot\System32\Drivers\bthport.sys
\SystemRoot\system32\DRIVERS\rfcomm.sys
\SystemRoot\system32\drivers\BthEnum.sys
\SystemRoot\system32\DRIVERS\bthpan.sys
\SystemRoot\system32\DRIVERS\monitor.sys
\SystemRoot\System32\TSDDD.dll
\SystemRoot\System32\cdd.dll
\SystemRoot\system32\drivers\luafv.sys
\SystemRoot\system32\DRIVERS\lltdio.sys
\SystemRoot\system32\DRIVERS\nwifi.sys
\SystemRoot\system32\DRIVERS\ndisuio.sys
\SystemRoot\system32\DRIVERS\rspndr.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
\??\C:\Program Files\NVIDIA Corporation\NvStreamSrv\NvStreamKms.sys
\SystemRoot\system32\DRIVERS\NisDrvWFP.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
\Windows\System32\autochk.exe
\Windows\System32\gdi32.dll
\Windows\System32\advapi32.dll
\Windows\System32\shlwapi.dll
\Windows\System32\ws2_32.dll
\Windows\System32\clbcatq.dll
\Windows\System32\rpcrt4.dll
\Windows\System32\iertutil.dll
\Windows\System32\imm32.dll
\Windows\System32\psapi.dll
\Windows\System32\urlmon.dll
\Windows\System32\imagehlp.dll
\Windows\System32\usp10.dll
\Windows\System32\comdlg32.dll
\Windows\System32\nsi.dll
\Windows\System32\ole32.dll
\Windows\System32\difxapi.dll
\Windows\System32\shell32.dll
\Windows\System32\sechost.dll
\Windows\System32\setupapi.dll
\Windows\System32\normaliz.dll
\Windows\System32\msctf.dll
\Windows\System32\Wldap32.dll
\Windows\System32\kernel32.dll
\Windows\System32\lpk.dll
\Windows\System32\wininet.dll
\Windows\System32\oleaut32.dll
\Windows\System32\user32.dll
\Windows\System32\msvcrt.dll
\Windows\System32\devobj.dll
\Windows\System32\KernelBase.dll
\Windows\System32\api-ms-win-downlevel-user32-l1-1-0.dll
\Windows\System32\api-ms-win-downlevel-shlwapi-l1-1-0.dll
\Windows\System32\cfgmgr32.dll
\Windows\System32\api-ms-win-downlevel-ole32-l1-1-0.dll
\Windows\System32\api-ms-win-downlevel-advapi32-l1-1-0.dll
\Windows\System32\comctl32.dll
\Windows\System32\api-ms-win-downlevel-normaliz-l1-1-0.dll
\Windows\System32\crypt32.dll
\Windows\System32\wintrust.dll
\Windows\System32\api-ms-win-downlevel-version-l1-1-0.dll
\Windows\System32\userenv.dll
\Windows\System32\msasn1.dll
\Windows\System32\profapi.dll
----------- End -----------
Done!
<<<1>>>
Upper Device Name: \Device\Harddisk0\DR0
Upper Device Object: 0xfffffa800a011060
Upper Device Driver Name: \Driver\Disk\
Lower Device Name: \Device\Ide\IAAStorageDevice-1\
Lower Device Object: 0xfffffa8007773050
Lower Device Driver Name: \Driver\iaStor\
<<<2>>>
Physical Sector Size: 512
Drive: 0, DevicePointer: 0xfffffa800a011060, DeviceName: \Device\Harddisk0\DR0\, DriverName: \Driver\Disk\
--------- Disk Stack ------
DevicePointer: 0xfffffa800a011980, DeviceName: Unknown, DriverName: \Driver\partmgr\
DevicePointer: 0xfffffa800a012040, DeviceName: Unknown, DriverName: \Driver\LHDmgr\
DevicePointer: 0xfffffa800a011060, DeviceName: \Device\Harddisk0\DR0\, DriverName: \Driver\Disk\
DevicePointer: 0xfffffa8007773050, DeviceName: \Device\Ide\IAAStorageDevice-1\, DriverName: \Driver\iaStor\
------------ End ----------
Alternate DeviceName: Unknown, DriverName: \Driver\LHDmgr\
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: 611910B2

Partition information:

Partition 0 type is Primary (0x7)
Partition is ACTIVE.
Partition starts at LBA: 2048 Numsec = 409600
Partition file system is NTFS
Partition is bootable

Partition 1 type is Primary (0x7)
Partition is NOT ACTIVE.
Partition starts at LBA: 411648 Numsec = 1858738176

Partition 2 type is Primary (0x7)
Partition is NOT ACTIVE.
Partition starts at LBA: 1859149824 Numsec = 53411840

Partition 3 type is Other (0x12)
Partition is NOT ACTIVE.
Partition starts at LBA: 1912561664 Numsec = 40963504

Disk Size: 1000204886016 bytes
Sector size: 512 bytes

Done!
Infected: HKU\S-1-5-21-2078339289-3773522293-2643299643-1001_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.
=======================================

 

[TheBardKen]

Also some new stuff popped up in the meantime while the scans were happening. Previously I was ending the processes of the malicious programs, but as it was scanning I walked away from the computer and now these programs are running.:

nvstreamsvc.exe
nvvcvc.exe
nvxdsync.exe

The first one denies me access if I try to end it. The others I haven't attempted to mess with.

 

[TheBardKen]

In the meantime I will remain disconnected from the internet and check back every so often.

 

[argus]

nvstreamsvc.exe = NVIDIA Corporation
nvvcvc.exe = NVIDIA Driver Helper Service
nvxdsync.exe = NVIDIA User Experience Driver Component



How's your computer behaving now?

 

[TheBardKen]

Thank you.

It seems to be running fine. Those programs from before aren't popping up again, even when connected to the internet.

Also the computer in general is running a little better, it dropped about an entire gig of Memory usage.

If the problems return in the next day then I'll return to this thread.

 

[argus]

Trojan.Poweliks.B
that is the problem.
removed.

 

[TheBardKen]

So everything should be fine now?

 

[argus]

Yes don't worry.

 

[argus]

Download DelFix by Xplode and save it to your desktop.

• Run the tool by right click on the
  
  icon and Run as administrator option.
• Make sure that these ones are checked:
  • Remove disinfection tools
  • Purge system restore
  • Reset system settings
• Push Run and wait until the tool completes his work.
• All tools we used should be gone. Tool will create an report for you (C:\DelFix.txt)

The tool will also record healthy state of registry and make a backup using ERUNT program in %windir%\ERUNT\DelFix
Tool deletes old system restore points and create a fresh system restore point after cleaning.


Greeting.

 

[TheBardKen]

Done, thank you