Jump to content

Multiple dllhost.exe processes - Powelik Trojan


Recommended Posts

Greetings!

 

I just joined this forum in hope that someone can help me remedy a recent issues with my Windows 7 system.

 

After experiencing a noticeable system performance slowdown, I noticed that there were a bunch of dllhost.exe processes consuming a lot of CPU.  A full Norton AV scan did not reveal any issues.  Attempts to kill the entire dllhost.exe process tree were minimally effective - I could never kill the top level parent dllhost.exe, and eventually the many dllhost.exe processes would appear.  Eventually, the Norton AV runtime did flag some inbound network activity as the Trojan.powelik along with another one I can't recall.

 

After searching around, I found this forum, and associated tool, which looked to be very helpful in resolving similar issues.

 

If it helps, I've followed one of MrCharlies' prior postings and have run and gathered the logs from the first step (Malwarebytes, FRST, RogueKiller).

 

Thanks!

Mark

Link to post
Share on other sites

Download the attached fixlist.txt to the same folder as FRST.exe/FRST64.exe.

Run FRST.exe/FRST64.exe and click Fix only once and wait

The tool will create a log (Fixlog.txt) in the folder, please post it to your reply.

=============================

Make sure you have created that system restore point before you continue!

Please read the directions carefully so you don't end up deleting something that is good!!

If in doubt about an entry....please ask or choose Skip!!!!

Don't Delete anything unless instructed to!

If you get the warning about a file UnsignedFile.Multi.Generic or LockedFile.Multi.Generic please choose

Skip and click on Continue

If a suspicious object is detected, the default action will be Skip, click on Continue

Please note that TDSSKiller can be run in safe mode if needed.

Please download the latest version of TDSSKiller from HERE and save it to your Desktop.

  • Doubleclick on TDSSKiller.exe to run the application, then click on Change parameters. (Leave the KSN box checked)

    tds2.jpg

  • Put a checkmark beside loaded modules.

    13040712472913819.png

  • A reboot will be needed to apply the changes. Do it.
  • TDSSKiller will launch automatically after the reboot. Also your computer may seem very slow and unusable. This is normal. Give it enough time to load your background programs.
  • Then click on Change parameters in TDSSKiller.
  • Check all boxes then click OK.

    clip.jpg

  • Click the Start Scan button.

    tds2.jpg

  • The scan should take no longer than 2 minutes.
  • If a suspicious object is detected, the default action will be Skip, click on Continue.

    tdsskiller_guide_5.gif

    Any entries like this: \Device\Harddisk0\DR0 ( TDSS File System ) - please choose Skip.

    If in doubt about an entry....please ask or choose Skip

  • 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.

    tdsskiller_guide_3.gif

    Note: 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:\ folder) in the form of "TDSSKiller.[Version]_[Date]_[Time]_log.txt". Please copy and paste the contents of that file here. There may be 3 logs > so post or attach all of them.
  • Sometimes these logs can be very large, in that case please attach it or zip it up and attach it.

Here's a summary of what to do if you would like to print it out:

If in doubt about an entry....please ask or choose Skip

Don't Delete anything unless instructed to!

If a suspicious object is detected, the default action will be Skip, click on Continue

If you get the warning about a file UnsignedFile.Multi.Generic or LockedFile.Multi.Generic please choose

Skip and click on Continue

Any entries like this: \Device\Harddisk0\DR0 ( TDSS File System ) - please choose Skip.

If malicious objects are found, they will show in the Scan results and offer three (3) options.

Ensure Cure is selected, then click Continue => Reboot now to finish the cleaning process.

Note: If Cure is not available, please choose Skip instead, do not choose Delete unless instructed.

~~~~~~~~~~~~~~~~~~~~

You can attach the logs if they're too long:

Bottom right corner of this page.

reply1.jpg

New window that comes up.

replyer1.jpg

Then...........

Please download and run ComboFix.

The most important things to remember when running it is to disable all your malware programs and run Combofix from your desktop.

Please visit this webpage for download links, and instructions for running ComboFix

http://www.bleepingcomputer.com/combofix/how-to-use-combofix

http://www.bleepingcomputer.com/download/combofix/dl/12/ <---ComboFix direct download

Please make sure you click download buttons that look similar to this, not "sponsored ad links":

bleep-crop.jpg

Ensure you have disabled all anti virus and anti malware programs so they do not interfere with the running of ComboFix.

Information on disabling your malware programs can be found Here.

Make sure you run ComboFix from your desktop.

Give it at least 30-45 minutes to finish if needed.

Please include the C:\ComboFix.txt in your next reply for further review.

---------->NOTE<----------

If you get the message Illegal operation attempted on registry key that has been marked for deletion after you run ComboFix....please reboot the computer, this should resolve the problem. You may have to do this several times if needed.

Last:

Clean out temp files:

Download TFC from here and save it to your desktop.

http://oldtimer.geekstogo.com/TFC.exe

http://www.bleepingcomputer.com/download/tfc/dl/92/

Close any open programs and Internet browsers.

Double click TFC.exe to run it on XP (for Vista and Windows 7 right click and choose "Run as administrator") and once it opens click on the Start button on the lower left of the program to allow it to begin cleaning.

Please be patient as clearing out temp files may take a while.

Once it completes you may be prompted to restart your computer, please do so.

Once it's finished you may delete TFC.exe from your desktop or save it for later use for the cleaning of temporary files.

MrC

Link to post
Share on other sites

OK...Next:

Please download AdwCleaner from HERE or HERE to your desktop.

  • Double click on AdwCleaner.exe to run the tool.

    Vista/Windows 7/8 users right-click and select Run As Administrator

  • Click on the Scan button.
  • AdwCleaner will begin...be patient as the scan may take some time to complete.
  • When it's done you'll see: Pending: Please uncheck elements you don't want removed.
  • Now click on the Report button...a logfile (AdwCleaner[R0].txt) will open in Notepad for review.
  • Look over the log especially under Files/Folders for any program you want to save.
  • If there's a program you may want to save, just uncheck it from AdwCleaner.
  • If you're not sure, post the log for review. (all items found are either adware/spyware/foistware)
  • If you're ready to clean it all up.....click the Clean button.
  • After rebooting, a logfile report (AdwCleaner[s0].txt) will open automatically.
  • Copy and paste the contents of that logfile in your next reply.
  • A copy of that logfile will also be saved in the C:\AdwCleaner folder.
  • Items that are deleted are moved to the Quarantine Folder: C:\AdwCleaner\Quarantine
  • To restore an item that has been deleted:
  • Go to Tools > Quarantine Manager > check what you want restored > now click on Restore.
Next..................

thisisujrt.gif Please download Junkware Removal Tool to your desktop.

  • Shut down your protection software now to avoid potential conflicts.
  • Run the tool by double-clicking it. If you are using Windows Vista or Seven, right-mouse click it and select Run as Administrator.
  • The tool will open and start scanning your system.
  • Please be patient as this can take a while to complete depending on your system's specifications.
  • On completion, a log (JRT.txt) is saved to your desktop and will automatically open.
  • Post the contents of JRT.txt into your next message.
Next.........

Please Update and run a Threat Scan (Malwarebytes)

Click on settings > Detection and Protection > Non-Malware Protection > PUP (Potentially Unwanted Program) detections > Make sure it's set to Treat detections as malware

Same for PUM (Potentially Unwanted Modifications)

Quarantine All that's found

MrC

Link to post
Share on other sites

Yes, it should be OK now.....if there's no other problems:

Lets check your computers security before you go and we have a little cleanup to do also:

Download Security Check by screen317 from HERE or HERE.

  • Save it to your Desktop.
  • Double click SecurityCheck.exe and follow the onscreen instructions inside of the black box.
  • If you get Unsupported operating system. Aborting now, just reboot and try again.
  • A Notepad document should open automatically called checkup.txt.
  • Please Post the contents of that document.
  • If you can't post it, attach it
MrC
Link to post
Share on other sites

I am having the same problem.  I keep getting a pop up that says

MB Successfully blocked access to a potentially malicious website 95.215.1.57

Type: Outgoing

Port 5274, Process: dllhost.exe.

 

At times the ip address changes and the port changes.  IT is occurring about every 20 seconds.

 

I ran an MB scan and it found 2 Trojans BUT did not stop the problem.

 

Thanks for any help.

 

Link to post
Share on other sites

Results of screen317's Security Check version 0.99.89

Windows 7 Service Pack 1 x64 (UAC is enabled)

Internet Explorer 11

``````````````Antivirus/Firewall Check:``````````````

Windows Firewall Enabled!

Norton AntiVirus

WMI entry may not exist for antivirus; attempting automatic update.

`````````Anti-malware/Other Utilities Check:`````````

Java 7 Update 11

Java version out of Date!

Adobe Reader 10.1.11 Adobe Reader out of Date!

````````Process Check: objlist.exe by Laurent````````

Norton ccSvcHst.exe

Malwarebytes Anti-Malware mbamservice.exe

Malwarebytes Anti-Malware mbam.exe

Norton AntiVirus Engine 20.4.0.40 ccSvcHst.exe

Malwarebytes Anti-Malware mbamscheduler.exe

`````````````````System Health check`````````````````

Total Fragmentation on Drive C: 0%

````````````````````End of Log``````````````````````

Link to post
Share on other sites

Out dated programs on the system are vulnerable to malware.
Please update or uninstall them:


==============================

Please uninstall these and any other Java listed in your Programs and Features:
Java 7 Update 11


Java version out of Date! <-------Download and install the latest version (Java™ 8 Update 25) from Here. Uncheck the box to install the Ask toolbar!!!, McAfee Security Scan Plus or any other free "stuff".

=============================

Adobe Reader 10.1.11 Adobe Reader out of Date! <---please check for an update if available or uninstall and download and install Foxit Reader which is less vulnerable to malware and much better than Adobe. Don't install any toolbars that may come with it (ASK Toolbar).

=============================

A little clean up to do....

Please Uninstall ComboFix: (------->if you used it<-------)

Press the Windows logo key + R to bring up the "run box"

Copy and paste next command in the field:

ComboFix /uninstall

Make sure there's a space between Combofix and /

cf2.jpg

Then hit enter. (it may look like CF is re-installing but it's not)
This will uninstall Combofix, delete its related folders and files, hide file extensions, hide the system/hidden files and clears System Restore cache and create new Restore point

(If that doesn't work.....you can simply rename ComboFix.exe to Uninstall.exe and double click it to complete the uninstall or download and run the uninstaller)

---------------------------------

bwebb7v.jpgDownload Delfix from here and save it to your desktop. (you may already have this)

  • Ensure Remove disinfection tools is checked.
  • Click the Run button.
  • Reboot

Any other programs or logs that are still remaining, you can manually delete. (right click.....Delete)
IE: RogueKiller.exe, RKreport.txt, RK_Quarantine folder, C:\FRST folder, FRST-OlderVersion folder, MBAR folder, etc....AdwCleaner > just run the program and click uninstall.

Note:
If you used FRST and can't delete the quarantine folder:
Download the fixlist.txt to the same folder as FRST.exe.
Run FRST.exe and click Fix only once and wait
That will delete the quarantine folder created by FRST.
The rest you can manually delete.

-------------------------------

Any questions...please post back.

If you think I've helped you, please leave a comment > click on my avatar picture > click Profile Feed.

Take a look at My Preventive Maintenance to avoid being infected again.

Good Luck and Thanks for using the forum, MrC

Link to post
Share on other sites

  • 4 weeks later...
  • Root Admin

Glad we could help. :)

If you need this topic reopened, please send a Private Message to any one of the moderating team members. Please include a link to this thread with your request. This applies only to the originator of this thread.

Other members who need assistance please start your own topic in a new thread. Thanks!

Link to post
Share on other sites

Guest
This topic is now closed to further replies.
 Share

  • Recently Browsing   0 members

    No registered users viewing this page.

Back to top
×
×
  • Create New...

Important Information

This site uses cookies - We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.