Jump to content


 


Register a free account to unlock additional features at BleepingComputer.com
Welcome to BleepingComputer, a free community where people like yourself come together to discuss and learn how to use their computers. Using the site is easy and fun. As a guest, you can browse and view the various discussions in the forums, but can not create a new topic or reply to an existing one unless you are logged in. Other benefits of registering an account are subscribing to topics and forums, creating a blog, and having no ads shown anywhere on the site.


Click here to Register a free account now! or read our Welcome Guide to learn how to use this site.

Photo

Duplicate processes pinning the CPU


  • This topic is locked This topic is locked
11 replies to this topic

#1 hsr

hsr

  • Members
  • 6 posts
  • OFFLINE
  •  
  • Local time:02:14 PM

Posted 24 June 2015 - 08:50 PM

I am not sure if this is a malware problem, but I am vary suspicious that it is. I was given a computer and told it was running so slow as to be unusable and could I check it for viruses. The procedure that I follow when asked to do this is to boot to safe mode and run;

 

MalwareBytes (2.0.4.1028)

AdwCleaner (4.201)

HitmandPro

 

All of these found makware with MalwareBytes reporting several hundred objects, many of which it listed as Trojans. Once I did this the system seemed to be running faster and I rebooted to normal. Again it seemed fine but after a few minutes it just ground to a halt and became unusable. I again booted to safe mode and with one exception, it run fine. That exception was windows explorer which ran very slow, but did run. I then tried safe mode with network. This duplicated normal mode and quickly ground to a halt. I then retried safe mode with network, but with the network cable unplugged. This time it performed normally. I then plugged the network cable in and it ground to a halt again. Remove the cable and it returned to normal. I next ran task manager and saw that on startup there were 7 processes showing;

 

conhost.exe

csrss.exe

ctfmon.exe

dllhost.exe

dllhost.exe

explorer.exe

taskmgr.exe

winlogon.exe

 

The CPU usage was ~6%. When I plugged the network cable in these processes started to duplicate, with 5 conhosts and at least 2 of the others and the CPU usage went to 100% and stayed pinned there. If I pulled the cable the processes started to decrease and CPU went back to 6%. Since conhost duplicated the most  did a google search on it and saw that there was a rootkit that mascaraded as conhost and that it was suggested to run JRT (7.0.8 (06.22.2015:1)) and Gmer (2.1.19357). Neither solved the problem. Finally I ran ComboFix (15-06-24.02) again no joy.  So I am at my wit's end and I am turning to you.

 

I have attached the logs from; Farbar Recovery Scan Tool, MiniToolBox by Farbar  Version: 22-06-2015, ComboFix, Gmer, and JRT.

 

Thanks

 

Howard

 

Attached Files



BC AdBot (Login to Remove)

 


#2 nasdaq

nasdaq

  • Malware Response Team
  • 38,936 posts
  • ONLINE
  •  
  • Gender:Male
  • Location:Montreal, QC. Canada
  • Local time:02:14 PM

Posted 28 June 2015 - 08:05 AM

Hello, Welcome to BleepingComputer.
I'm nasdaq and will be helping you.

If you can please print this topic it will make it easier for you to follow the instructions and complete all of the necessary steps in the order listed.
===

Open notepad (Start =>All Programs => Accessories => Notepad). Please copy the entire contents of the code box below.
 
start

CreateRestorePoint:
EmptyTemp:
CloseProcesses:

HKU\S-1-5-21-3957363093-2824471322-4065818870-1000\...A8F59079A8D5}\localserver32: rundll32.exe javascript:"\..\mshtml.dll,RunHTMLApplication ";eval("epdvnfou/xsjuf)(=tdsjqu!mbohvbhf> (the data entry has 243 more characters). <==== Poweliks!
HKU\S-1-5-18\...\RunOnce: [SpUninstallDeleteDir] => rmdir /s /q "\SearchProtect"
GroupPolicy: Group Policy on Chrome detected <======= ATTENTION
CHR HKLM\SOFTWARE\Policies\Google: Policy restriction <======= ATTENTION
HKLM\SOFTWARE\Policies\Microsoft\Internet Explorer: Policy restriction <======= ATTENTION
HKU\S-1-5-21-3957363093-2824471322-4065818870-1000\SOFTWARE\Policies\Microsoft\Internet Explorer: Policy restriction <======= ATTENTION
SearchScopes: HKLM -> {DC91FAFB-6CEA-49E5-BB74-9CEE75D09B77} URL =
FF Plugin: @microsoft.com/GENUINE -> disabled No File
S3 catchme; \??\C:\Users\Family\AppData\Local\Temp\catchme.sys [X]

End
Save the files as fixlist.txt in the same folder where the Farbar tool is running from.
The location is listed in the 3rd line of the Farbar log you have submitted.

Run FRST and click Fix only once and wait.

Restart the computer normally to reset the registry.

The tool will create a log (Fixlog.txt) please post it to your reply.
===

CHR dev: Chrome dev build detected! <======= ATTENTION

Your copy of Chrome has been compromised

Re-install Chrome

Unless you did this yourself, malware has changed your Chrome version into the Development Build. Among other things this allows malware to install any extension it wants.

Clear your Chrome cache and cookies
https://support.google.com/chromebook/answer/183083?hl=en

===

Remove Chrome using the the instructions on this page.
https://support.google.com/chrome/answer/95319?hl=en

Before you do Export your Bookmarks
Chrome will export your bookmarks as a HTML file, which you can then import into another browser.

If you want to save your passwords as well see here: http://www.intowindows.com/how-to-backup-saved-passwords-in-google-chrome-browser/

Re-install Chrome and the Bookmarks.

If you want to save all your settings refer to this page.
Follow the instructions before removing Chrome.
http://juan2geek.com/how-to-backup-and-restore-entire-google-chrome-setting/
<<<>>>

Get the latest version of AdwCleaner and run it.

Please download AdwCleaner by Xplode onto your Desktop.
  • Close all open programs and internet browsers.
  • Double click on AdwCleaner.exe to run the tool.
  • Click the Scan button and wait for the process to complete.
  • Click the Report button and the report will open in Notepad.
IMPORTANT
  • If you click the Clean button all items listed in the report will be removed.
If you find some false positive items or programs that you wish to keep, Close the AdwCleaner windows.
  • Close all open programs and internet browsers.
  • Double click on AdwCleaner.exe to run the tool.
  • Click the Scan button and wait for the process to complete.
  • Check off the element(s) you wish to keep.
  • Click on the Clean button follow the prompts.
  • A log file will automatically open after the scan has finished.
  • Please post the content of that log file with your next answer.
  • You can find the log file at C:\AdwCleaner[Sn].txt (n is a number).
===

How is the computer running now?

#3 hsr

hsr
  • Topic Starter

  • Members
  • 6 posts
  • OFFLINE
  •  
  • Local time:02:14 PM

Posted 28 June 2015 - 07:42 PM

Hi,

 

I performed the requested operations and attached the files. That helped quite a bit. It occurs to me that the first thing I would do when attaching the network would be to try Chrome and see if it worked. Now it does not seem to be effecting system performance. So thank you very much.

 

But I am still having problems with explorer.exe, or anything that touches the disk. Clicking start the first time can take over a minute for the menu to appear. Starting Windows explorer take over a minute to start and clicking on any folder takes a similar amount of time. All this is for the first time that folder is clicked. Subsequent clicks are much faster. It is not that the disk light is constantly on, it blinks but is off during the wait. I am not sure is this is malware of a different system issue.

 

Thanks again

 

Howard

 

Attached Files



#4 nasdaq

nasdaq

  • Malware Response Team
  • 38,936 posts
  • ONLINE
  •  
  • Gender:Male
  • Location:Montreal, QC. Canada
  • Local time:02:14 PM

Posted 29 June 2015 - 06:58 AM

Let continue the cleanup.
Will take care of the pending issues when done.

Temporarily disable your AV program so it does not interfere.
Info on how to disable your security applications How To Temporarily Disable Your Anti-virus, Firewall And Anti-malware Programs - Security Mini-Guides.

Download Zeok tool from here

When the download appears, save to the Desktop.
On the Desktop, right-click the Zoek.exe file and select: Run as Administrator
(Give it a few seconds to appear.)

Next, copy/paste the entire script inside the code box below to the input field of Zoek:
createsrpoint;
autoclean;
emptyalltemp;
ipconfig /flushdns;b
Now...
Close any open Browsers.
Click the Run script button, and wait. It takes a few minutes to run all the script.

When the tool finishes, the zoek-results.log is opened in Notepad.
The log is also found on the systemdrive, normally C:\
If a reboot is needed, the log is opened after the reboot.

Please attach the zoek-results.log in your reply.

Also, please provide an update on how the computer is behaving after running the above script.

===

#5 hsr

hsr
  • Topic Starter

  • Members
  • 6 posts
  • OFFLINE
  •  
  • Local time:02:14 PM

Posted 29 June 2015 - 09:53 AM

Zoek has been run and results file attached. No real difference noted. I also ran "sfc /scannow" and "chkdsk /F". Neither reported errors. Windows Explorer still runs in geologic time.

 

Thanks

 

Howard

 

Attached Files



#6 nasdaq

nasdaq

  • Malware Response Team
  • 38,936 posts
  • ONLINE
  •  
  • Gender:Male
  • Location:Montreal, QC. Canada
  • Local time:02:14 PM

Posted 29 June 2015 - 12:44 PM


Reset your router. It may be infected.

How to Reset a Router Back to the Factory Default Settings
http://www.ehow.com/how_2110924_reset-back-factory-default-settings.html

Then, please reconfigure it back to your preferred setting.. Below is the list of default username and password, should you don't know it ;)

http://www.routerpasswords.com/
http://www.phenoelit-us.org/dpl/dpl.html
===

Reset for Linksys, Netgear, D-Link and Belkin Routers
http://www.techsupportforum.com/2763-reset-for-linksys-netgear-d-link-and-belkin-routers/


How to tell if my Wireless is secure.
http://www.ehow.com/how_6775466_tell-wireless-secure_.html

====

There is also a possibility that you need to update some drivers.

Navigate to this page.
http://secunia.com/vulnerability_scanning/personal/

Download and install the Secunia PSI.

Run the application and updates all the programs/drivers that needs to be updated.

===
p.s.

Secunia will start looking for new updates every time you boot the system.
This is an overkill. When all is well you can remove it using the Add/Remove programs applet.

Keep me posted.

#7 hsr

hsr
  • Topic Starter

  • Members
  • 6 posts
  • OFFLINE
  •  
  • Local time:02:14 PM

Posted 29 June 2015 - 08:24 PM

None of my other systems are having a problem, so I didn't think it was my router. However, I was having a hard time logging on to it, which is suspicious in itself, so I reset it. No difference. I tried PSI, but all it mentioned were programs, such as Adobe Flash and Java, no drivers. This is surprising so I am wondering if I am doing something wrong.

 

I hate to admit defeat, but I am getting very close to just doing a reinstall.

 

Thanks

 

Howard



#8 nasdaq

nasdaq

  • Malware Response Team
  • 38,936 posts
  • ONLINE
  •  
  • Gender:Male
  • Location:Montreal, QC. Canada
  • Local time:02:14 PM

Posted 30 June 2015 - 06:43 AM

Clean your Java cache.
https://www.java.com/en/download/help/plugin_cache.xml

===

Clean your Flash cache.
https://forums.adobe.com/message/4278569
===

You can manually check your present version and update as recommended.
https://www.java.com/en/download/installed.jsp

Be careful not to install malware posing as Java update!
Important read this blog.
http://blog.trendmicro.com/trendlabs-security-intelligence/malware-poses-as-an-update-for-java-0-day-fix/

Quoted from the page.
"In light of the recent events surrounding Java, users must seriously consider their use of Java. Do they really need it? If yes, make sure that users follow the steps we recommended and get the security update directly from the official oracle website." at:
http://www.oracle.com/technetwork/java/javase/downloads/index.html

How to disable Java in your browsers
http://www.infoworld.com/t/web-browsers/how-disable-java-in-your-browsers-210882


If present remove the old version(s) of Java using the Add/Remove Programs applet.

Java x Update xx
===

Critical vulnerabilities have been identified in old version of Adobe Flash Player please get the latest version.

Flash test site:
http://www.adobe.com/software/flash/about/
Install the new version or if you have the latest close the windows.

Flash Player Help / Find version
http://helpx.adobe.com/flash-player/kb/find-version-flash-player.html#main_Find_the_Flash_Player_version_installed_on_your_machine

How is it now?

#9 hsr

hsr
  • Topic Starter

  • Members
  • 6 posts
  • OFFLINE
  •  
  • Local time:02:14 PM

Posted 30 June 2015 - 04:51 PM

It does not look that Java is installed. At least it does not show up under Add/Delete programs. The Java console is shown in the Control Panel so I cleared the cache anyway. I also cleared the Flash cache. It already had the latest version. Still no improvement. explorer.exe is always taking up 50% of the CPU when it is up. Since this has a dual core processor it must be taking up all of one of the cores. I checked in BIOS setup and Multicore support is turned on.

 

Very frustrating.

 

Thanks

 

Howard



#10 nasdaq

nasdaq

  • Malware Response Team
  • 38,936 posts
  • ONLINE
  •  
  • Gender:Male
  • Location:Montreal, QC. Canada
  • Local time:02:14 PM

Posted 01 July 2015 - 06:04 AM

Restore your Windows 7 to the Last good configuration
Follow the instructions on this page.

http://windows.microsoft.com/en-ca/windows/using-last-known-good-configuration#1TC=windows-7
<<<>>>

#11 hsr

hsr
  • Topic Starter

  • Members
  • 6 posts
  • OFFLINE
  •  
  • Local time:02:14 PM

Posted 01 July 2015 - 07:26 PM

Can't. It looks like one of the disk cleaning programs I used got rid of them. I'll just have to reinstall

 

Thanks

 

Howard



#12 nasdaq

nasdaq

  • Malware Response Team
  • 38,936 posts
  • ONLINE
  •  
  • Gender:Male
  • Location:Montreal, QC. Canada
  • Local time:02:14 PM

Posted 07 July 2015 - 07:47 AM

It appears that this issue is resolved, therefore I am closing the topic. If that is not the case and you need or wish to continue with this topic, please send me or any Moderator a Personal Message (PM) that you would like this topic re-opened.




0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users