Solved Several DLLhost.exe COM Surrogate in Task Manager

B777F

New Member
Joined
Oct 20, 2014
Messages
2
#1
These multiple DLLhost.exe entries in Windows Task Manager keep multiplying and multiplying. Any games or programs I use in full screen mode get minimized. I never had an issue until I started noticing this when checking task manager. I checked another laptop and a desktop and they show no such surrogate entries. Even as I'm typing here, the cursor will stop blinking as if another program is loading in the background. Microsoft Security Essentials and Malawarebytes Premium have not been able to get rid of this.

I appreciate your help and expertise. Thank you.
 
Operating System
Windows 7
Are you using a 32-bit or 64-bit operating system?
64-bit (x64)
Infection date and initial symptoms
October 2nd. I noticed the computer taking longer than normal to load programs and that's where I noticed the multiple DLLhost.exe com surrogate entries in task manager. I had been away from the computer for a couple weeks and am still stying to solve the problem
Current issues and symptoms
Any games or programs I try to run in full screen mode get minimized with these DLLhost entries start populating in task manager. It can have 15-20 of entries at any given time and ending the process just causes them to come back. I've also noticed the cursor will periodically disappear from a web page etc (also guessing due to this.)
Steps taken in order to remove the infection
I ran multiple full scans with Malwarebytes Anti-Malware Premium. I also tried the Hitman Pro 30 day trial

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TwinHeadedEagle

Removal Expert
MalwareTips Staff
Verified
Joined
Mar 8, 2013
Messages
22,358
OS
Windows 10
Antivirus
ESET
#2
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 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.
 

B777F

New Member
Joined
Oct 20, 2014
Messages
2
#3
Much appreciated with the quick response. Everything went super smooth with the combofix and attached is the txt file. Is there anything else I need to do TwinHeaded Eagle?
 

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TwinHeadedEagle

Removal Expert
MalwareTips Staff
Verified
Joined
Mar 8, 2013
Messages
22,358
OS
Windows 10
Antivirus
ESET
#4
No, that would be all :)


Glad I could help. We will delete all used tools and I'll give you some tips to harden your security and learn how to protect yourself :)


Recommended reading:
MUST READ - security tips:

MUST READ - general maintenance:


The Importance of Software Updating:

In order to stay protected it is
very important that you regularly update all of your software. Cybercriminals depend on the apathy of users around software updates to keep their malicious endeavor running.

Operating systems, such as Windows, and applications, such as Adobe Reader or JAVA, are used by tens of millions of computers and devices around the world, making them a huge target for cybercriminals. Downloading updates and installing them can sometimes be tedious, but the advantages you get from the updates are certainly worth it.




Recommended additional software:
TFC - to clean unneeded temporary files.
Malwarebytes' Anti-Malware - to scan your system from time to time in search for malware.
Malwarebytes' Anti-Exploit - to prevent plenty of mostly exploited vulnerabilities.
McShield - to prevent infections spread by removable media.
Unchecky - to prevent from installing additional foistware, implemented in legitimate installations.
FiheHippo.com Update Checker - to keep your programs up-to-date.
Adblock - to surf the web without annoying ads!



Post-cleanup procedures:


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.



My help is free for everybody.
If you're happy with the help provided and/or wish to buy me a beer for the assistance you received, then you can consider a donation:

Thank you!​




Stay safe,
TwinHeadedEagle :)