dllhost.exe COM Surrogate issues

[nnelg78]

Greetings,

Last week my computer started grinding to a halt. The task manager showed that multiple instances of dllhost.exe were opening. I ran a virus scan with my Mcafee Antivirus. This came back with no infections noted. I then turned to Google and realized that this was going to be beyond my abilities to fix. As such, I have turned to these forums for help. Any help or guidance that would be provided would be greatly appreciated.

Thanks.

 

[nnelg78]

I am starting to notice multiple google chrome process starting up as well. Not sure if this is related or not.

 

[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.

Scan with TDSSKiller

Please download TDSSKiller by Kaspersky and save it to your desktop.

• Right-click on
  
  icon and select
  
  Run as Administrator to start the tool.
• Click on Change parameters and put a checkmark beside Loaded modules. A reboot will be needed to apply the changes, allow it to do so.
• Your machine may appear very slow and unusable after that - it's normal.
• TDSSKiller will run automaticaly. Click on Change parameters and click OK.
• Click the Start Scan button and wait patiently.

If anything will be found follow this guidelines:

• If a suspicious object is detected, the default action will be Skip, click on Continue.
• If malicious objects are found, they will show in the Scan results - Select action for found objects and offer three options.
  Ensure Cure (default) is selected, then click Continue > Reboot now to finish the cleaning process.
  If Cure is not available, please choose Skip instead.
• Do not choose Delete unless instructed!

A report will be created in your root directory, (usually C:\ drive) in the form of TDSSKiller.[Version]_[Date]_[Time]_log.txt. Please include the contents of that file in your next post.

Scan with ComboFix

This is a very powerful tool that should be used only if advised by Malware Analyst.
Do not run ComboFix on your own!

Referring to this instruction, please download ComboFix by sUBs and save it to your desktop.
Temporary disable your AntiVirus and AntiSpyware protection - instructions here.

• Right-click on
  
  icon and select
  
  Run as Administrator to start the tool.
• Accept the disclaimer and agree if prompted to install Recovery Console.
• Do not take any actions while ComboFix goes through your System - it may cause it to stall!
• This scan may take some time!
• When finished - it will display a logfile (located also on your main drive, usually C:\ComboFix.txt).

Include that log in your next reply.

If you'll encounter any issues with internet connection after running ComboFix, please visit this link.

If an error about operation on the key marked for deletion will appear after running the tool, please reboot your machine.

 

[nnelg78]

I apologize for not getting back to you sooner. I am running the scans right now.

 

[nnelg78]

Here are the files that you requested. I had to split the TDSS killer file in half as it was too big to upload. The computer is acting much better now. However I still have two instances of dllhost.exe running and multiple instances of chrome running. I have attached a screen print of my task manager to show what is now running. Are these legit, or does something else need to be done.

I really appreciate your help.

 

[TwinHeadedEagle]

Looking good. Let's make few more checks:

Scan with Malwarebytes' Anti-Malware

Please download Malwarebytes Anti-Malware and save it to your desktop.

• Install the progam and select update.
• Once updated, click the Settings tab, in the left panel choose Detctions & protection and tick Scan for rootkits.
• Click the Scan tab, choose Threat Scan is checked and click Scan Now.
• If threats are detected, click the Apply Actions button. You will now be prompted to reboot. Click Yes.
• Upon completion of the scan (or after the reboot), click the History tab.
• Click Application Logs and double-click the Scan Log.
• At the bottom click Export and choose Text file.

Save the file to your desktop and include its content in your next reply.

Fix with AdwCleaner

Please download AdwCleaner by Xplode and save the file to your desktop.

• Right-click on
  
  icon and select
  
  Run as Administrator to start the tool.
• Follow the prompts and click Scan.
• When finished, please click Clean.
• Upon completion, click Report. A log (AdwCleaner[S*].txt) will open.

Please include the contents of that file in your reply.

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.

 

[nnelg78]

Hi there.

Here are the latest batch of files. Things slowing down again and the CPU is running at 100% again. Malwarebytes is popping up and saying that it is blocking suspect IP traffic for DLLhost.exe.

Again, your help is appreciated.

Thanks

 

[TwinHeadedEagle]

Very good. We will perform one more fix. Tell me how is your PC now?

Fix with Farbar Recovery Scan Tool

This fix was created for this user for use on that particular machine.

Running it on another one may cause damage and render the system unstable.

​

Download attached fixlist.txt file and save it to the Desktop:

Both files, FRST and fixlist.txt have to be in the same location or the fix will not work!

• 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).
• Press the Fix button just once and wait.
• If for some reason the tool needs a restart, please make sure you let the system restart normally. After that let the tool complete its run.
• When finished FRST will generate a log on the Desktop, called Fixlog.txt.

Please attach it to your reply.

 

[nnelg78]

Here is the fixlog. Everything looks to be working ok. I will watch it for a little while to make sure nothing pops up. I will let you know tomorrow if we appear to be clear.

 

[TwinHeadedEagle]

Good. Let me know.