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Windows 7: What to do about a virus-like problem?

05 Dec 2010   #1
9strick9

Windows Home Premium 64 bit
 
 
What to do about a virus-like problem?

An infection is causing my system to redirect me to various commercial sites, many of which are scams. I have scanned my C: drive with two different anti-virus programs, an anti-spyware program and an anti-malware program. None of them could find any problems. I can't reinstall Windows because I don't have a disc.

Any suggestions on what to do?

Thanks


My System SpecsSystem Spec
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05 Dec 2010   #2
baarod

El Capitan / Windows 10
 
 

Quote   Quote: Originally Posted by 9strick9 View Post
An infection is causing my system to redirect me to various commercial sites, many of which are scams. I have scanned my C: drive with two different anti-virus programs, an anti-spyware program and an anti-malware program. None of them could find any problems. I can't reinstall Windows because I don't have a disc.

Any suggestions on what to do?

Thanks
Internet Explorer is just running an add-on that you were tricked into installing. Reset IE to defaults. Start, type "inetcpl.cpl" and press enter. Click Reset... from the Advanced tab.
My System SpecsSystem Spec
05 Dec 2010   #3
Lemur

Systems 1 and 2: Windows 7 Enterprise x64, Win 8 Developer
 
 

Also reboot into safe mode and run malwarebytes with full scan...
My System SpecsSystem Spec
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07 Dec 2010   #4
9strick9

Windows Home Premium 64 bit
 
 

I followed the suggestions below as best I could but the problem remains. I reset the IE to its defaults and scanned with malwarebytes in safe mode. I use Firfox for my browser so I deactivated all of the addons that I had installed. None of this solved the problem. I then reinstalled Firefox but that didn't help either.

Any suggestions on what to do now?

Thank you.
My System SpecsSystem Spec
07 Dec 2010   #5
ZORG

win 7 ultimate
 
 

All right pal

Let´s start from the beginning. Download spybot search and destroy, install and run it. For a start, it may help you to get rid of the problem if it is a virus or a spyware. If it doesn´t ´we can try another one as super antispyware.

zorg
My System SpecsSystem Spec
08 Dec 2010   #6
mborner

Windows 7 Pro/32 Academic. Build 7600
 
 

Take a look at you host file. Navigate to C:\Windows\system32\drivers\etc. There, you will see a file called "hosts". Open the hosts file in notepad.

What to do about a virus-like problem?-screenshot002.jpg


My System SpecsSystem Spec
08 Dec 2010   #7
Jacee
Microsoft MVP

Windows 7 Ultimate 32bit SP1
 
 

Clear your DNS cache and restore MS's Hosts file

Copy and paste these lines in Note pad.

@Echo on
pushd\windows\system32\drivers\etc
attrib -h -s -r hosts
echo 127.0.0.1 localhost>HOSTS
attrib +r +h +s hosts
popd
ipconfig /release
ipconfig /renew
ipconfig /flushdns
netsh winsock reset all
netsh int ip reset all
shutdown -r -t 1
del %0


Save as flush.bat to your desktop. Right click to run as Administrator. Your computer will reboot itself.

Now, download Malwarebytes' Anti-Malware to your desktop
|MG| Malwarebytes Anti-Malware 1.50 Download
* Double-click mbam-setup.exe and follow the prompts to install the program.
* At the end, be sure a checkmark is placed next to Update Malwarebytes' Anti-Malware and Launch Malwarebytes' Anti-Malware, then click Finish.
* If an update is found, it will download and install the latest version.
* Once the program has loaded, select Perform full scan, then click Scan.
* When the scan is complete, click OK, then Show Results to view the results.
* Be sure that everything is checked, and click Remove Selected.
* When completed, a log will open in Notepad. Please save it to a convenient location. Copy and Paste that log into your next reply.
My System SpecsSystem Spec
08 Dec 2010   #8
9strick9

Windows Home Premium 64 bit
 
 

The "hosts" file looks ok.

127.0.0.1 localhost
::1 localhost
# Copyright (c) 1993-2009 Microsoft Corp.
#
# This is a sample HOSTS file used by Microsoft TCP/IP for Windows.
#
# This file contains the mappings of IP addresses to host names. Each
# entry should be kept on an individual line. The IP address should
# be placed in the first column followed by the corresponding host name.
# The IP address and the host name should be separated by at least one
# space.
#
# Additionally, comments (such as these) may be inserted on individual
# lines or following the machine name denoted by a '#' symbol.
#
# For example:
#
# 102.54.94.97 rhino.acme.com # source server
# 38.25.63.10 x.acme.com # x client host

# localhost name resolution is handled within DNS itself.
# 127.0.0.1 localhost
# ::1 localhost


I'm not sure how the clear the DNS cache and restore MS's Hosts file. Is this what the code you present does?
My System SpecsSystem Spec
08 Dec 2010   #9
Corrine

Windows 7 & Windows Vista Ultimate
 
 

Hi, 9strick9.

Please take another look at Jacee's instructions. You need to copy that code in Notepad and "Save as" flush.bat to your desktop. Then, just right-click to run flush.bat as Administrator.
My System SpecsSystem Spec
08 Dec 2010   #10
9strick9

Windows Home Premium 64 bit
 
 

Got it! I did this and here are the results.


Malwarebytes' Anti-Malware 1.50
Malwarebytes

Database version: 5275

Windows 6.1.7600
Internet Explorer 8.0.7600.16385

12/8/2010 9:07:49 PM
mbam-log-2010-12-08 (21-07-49).txt

Scan type: Full scan (C:\|)
Objects scanned: 340734
Time elapsed: 1 hour(s), 10 minute(s), 56 second(s)

Memory Processes Infected: 0
Memory Modules Infected: 0
Registry Keys Infected: 0
Registry Values Infected: 0
Registry Data Items Infected: 0
Folders Infected: 0
Files Infected: 0

Memory Processes Infected:
(No malicious items detected)

Memory Modules Infected:
(No malicious items detected)

Registry Keys Infected:
(No malicious items detected)

Registry Values Infected:
(No malicious items detected)

Registry Data Items Infected:
(No malicious items detected)

Folders Infected:
(No malicious items detected)

Files Infected:
(No malicious items detected)


It didn't find any problems. What next?
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 What to do about a virus-like problem?




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