Solved

adware removal

Posted on 2015-02-11
4
246 Views
Last Modified: 2015-02-12
This is a laptop running Windows 8.1 and IE11. Following some downloads of free games by grandchildren I was left with some unwanted adware and BHOs on the machine. In particular it was impossible to search or visit websites without unwanted pages, ads, videos and sponsored links appearing. I ran a scan with Malwarebytes Anti-Malware which cleared most of it but there were two enabled entries left in the Manage Addons section of IE which looked very suspicious as they were obviously misspelt words. When I tried to disable these I found that the Enable and Disable buttons were grayed out. I subsequently did some Googling and found that I could right click the entries, choose "More Information" and then copy the information there. By pasting the info into Notepad I could copy the Class ID and use this in the registry to delete any entries referring to the addons.

I did this for both entries and they did indeed disappear from IE. For a couple of days everything was fine until suddenly today the ads and unwanted web pages started popping up again. I knew I had not downloaded anything in the meantime but when I looked in the Manage Addons window again there were two new entries, both misspelt but different words to the ones before and once again it is not possible to disable them as the buttons for this are grayed out.

The names of the current suspect Addons are 'loWrrate' and 'offErapP' but I suspect the names mean nothing as the previous ones which I removed had different but similarly unintelligible names. The names appear to refer to marketing terms, Low Rate and Offer App, and the previous ones were of a similar nature. I imagine the misspelling is to confuse adware removal programmes.

Again I have done a full scan with Malwarebytes and also Spybot S&D but nothing is detected. I am currently running a full scan with Windows Defender but nothing to see at this point. Quite obviously there must be something left on the computer that is reinstating these BHOs even when they have been removed and generating new names each time. The only indication I have of what it might be are a few entries in the quarantine section of Windows Defender referring to "adware:win32/saverextension". It appears to have quarantined this particular infection several times over the last few days including today. But if that is the case then why are the BHOs appearing and why can they not be disabled or removed.

I would be very grateful for any expert help so that I can put a stop to this.
0
Comment
Question by:grigorovsky
  • 2
  • 2
4 Comments
 
LVL 29

Expert Comment

by:Sudeep Sharma
Comment Utility
Hi grigorovsky,

Please run the following and post the logs for further analysis of your system.

I would recommend to scan the system with the tools mentioned below and in the sequence they are mentioned and post the logs

Make sure you DO NOT REBOOT the system after running tools in point 1 & 2.

1. RogueKiller/TheKiller
2. Adwcleaner
3. TDSSKIller

RogueKiller:
http://www.adlice.com/softwares/roguekiller/

Adwcleaner
http://www.bleepingcomputer.com/download/adwcleaner/dl/125/

TDSSKiller
http://media.kaspersky.com/utilities/VirusUtilities/EN/tdsskiller.exe


I would also recommend you to go through the articles from Younghv and RPG for  the future reference

Basic Malware Troubleshooting
http://www.experts-exchange.com/A_1940.html

Rogue-Killer-What-a-great-name
http://www.experts-exchange.com/A_4922.html

Stop-the-Bleeding-First-Aid-for-Malware
http://www.experts-exchange.com/A_5124.html

So in your next reply post the RogueKiller logs, Adwcleaner and TDSSKIller Logs

Sudeep
0
 

Author Comment

by:grigorovsky
Comment Utility
Ok but in the meantime how can I un-grey the disable button for these two BHOs there must be a registry entry that controls whether the enable\disable buttons can be used or not?
0
 
LVL 29

Accepted Solution

by:
Sudeep Sharma earned 500 total points
Comment Utility
The tools mentioned above would take care of it.

Please run them and let us know how does it look.

Thanks,
Sudeep
0
 

Author Comment

by:grigorovsky
Comment Utility
I used Sysinternals Autoruns to remove the BHOs. I have also scanned again with Malwarebytes and Spybot S&D and installed Kaspersky Internet Security and run a full system scan.  A few things came up which have been removed. I also found some rogue folders in the Programme Files folder. All of them had odd misspelt names and included two which had the same name as the rogue BHOs. I have deleted them all and all seems well. I think the greying out of the enable/disable buttons is achieved by adding the CLSID of the BHO to the registry key: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Ext\PreApproved .

Things are running fine at the moment. I have accepted Sudeep's solution as I am sure this would have worked also.
0

Featured Post

What Should I Do With This Threat Intelligence?

Are you wondering if you actually need threat intelligence? The answer is yes. We explain the basics for creating useful threat intelligence.

Join & Write a Comment

Suggested Solutions

Healthcare organizations in the United States must adhere to the guidance of both the HIPAA (Health Insurance Portability and Accountability Act) and HITECH (Health Information Technology for Economic and Clinical Health Act) for securing and protec…
By this time the large percentage of day-to-day transactions have shifted to mobile banking; here are some overriding areas QAs must investigate while testing mobile banking apps.  
The Task Scheduler is a powerful tool that is built into Windows. It allows you to schedule tasks (actions) on a recurring basis, such as hourly, daily, weekly, monthly, at log on, at startup, on idle, etc. This video Micro Tutorial is a brief intro…
Sending a Secure fax is easy with eFax Corporate (http://www.enterprise.efax.com). First, Just open a new email message.  In the To field, type your recipient's fax number @efaxsend.com. You can even send a secure international fax — just include t…

743 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

17 Experts available now in Live!

Get 1:1 Help Now