VERY stubborn dllhost.exe! Have tried almost everything!!!!!!!

[csalas73]

1 month ago I noticed my computer getting sluggish. After checking Task Manager I noticed MANY instances of dllhost.exe*32. All except the one WITHOUT *32 could be stopped manually, but would then reappear. On Nov 7th, I began backing up all my files to an external drive in preparation for a disk reformat. I also dabbled with the windows disk defragment tool but only got as far as the scan. Soon after starting to move files, I started noticing I could not open alot of files. I then saw the links to the Cryptowall Ransomeware site and realized I had been hacked. Upon searching for a solution, I cam uppon this website and a thread where TwinHeadedEagle had helped a person with the exact same computer specs and problems as me. So I follow the instructions. It helped ALOT. The dllhost.exe did not come back right away. I noticed that cryptowall ONLY encrypted files in the My Documents folder. Everything in Pictures and Videos was NOT touched.

dllhost.exe came back when I went into the MY Documents folder and opened an Excel file to see if had been encrypted. It indeed had been, and also dllhost.exe came back. I've run all the tools from this thread:

http://malwaretips.com/threads/2-issues-cryptowall-ransomware-and-multiple-dllhost-exe-32.36292/

But it has not cleaned my system. I ordered Windows 8.1 (because I couldn't find my Windows 7 CD) with plans to reformat. But I would still like to find out how and why this happened to prevent it in the future. I have been running Windows Security Essentials. It did find alot of malware and cleaned alot of the system once I ran a full scan. These are what it found:

Ransom:Win32/Crowti
Trojan:Win32/Malinject.gen!plock
VirTool:Win32/CeeInject
PWS:Win32/Zbot
TrojanDownloader:Java/OpenStream.BY
Exploit:Java/CVE-2013-0422
Trojan:Win32/Autoac!plock
Trojan:Win32/Dynamer!ac
Behavior:Win32/VawtrakA
VirTool:Win32/CeeInject.gen!KK

All that was BEFORE I followed the post by TwinHeadedEagle. Now, the scans DO NOT find anything.

 

[csalas73]

Update... I just ran a quick scan (12 Nov 2014) with Microsoft Security Essentials and it found:

Trojan:Win32/Powessere.A!reg

NOTE: This is after running a scan with Malwarebytes and TDSSKiller that had found NOTHING.. dllhost.exe is still present, however..

 

[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.