Malicious URL blocked: 33ff99.com and ff00cc.com

Viruses and worms
1

Greetings!

Avast network shield is constantly alerting me that it is blocking calls from System32\dllhost.exe to the websites 33ff99.com and ff00cc.com. I’ve run full boot-time scans from Avast, as well as Malwarebytes, ComboFix, TDSSkiller, Spybot, and anything else I could think of to get rid of whatever is initiating these calls, but they are still there.

2

In addition to all the scans recommended on this forum, I’ve also run a sfc /scannow command to check the system files, and here is the log from that.

3

This is the problem :

[HKEY_CURRENT_USER\Software\Classes\clsid\{fbeb8a05-beee-4442-804e-409d6c4515e9}\InProcServer32] /64 "" = \\?\globalroot\Device\HarddiskVolume2\Users\Tony\AppData\Local\Temp\sxqhvvn\sfvblpf\wow.dll

Could you attach the combofix log please

Also you appear to be running multiple AV’s
F-Secure Corporation
AVG Technologies CZ, s.r.o.
Cbeyond Secure Desktop
AVAST Software

4

Here’s the combofix log from my latest run.

[HKEY_CURRENT_USER\Software\Classes\clsid\{fbeb8a05-beee-4442-804e-409d6c4515e9}\InProcServer32] /64 "" = \\?\globalroot\Device\HarddiskVolume2\Users\Tony\AppData\Local\Temp\sxqhvvn\sfvblpf\wow.dll

After running ComboFix, I opened regedit to take a look at this key, but it’s not there. Is this a hidden or locked registry entry?

Thanks for your help getting rid of this explicative deleted

5

The registry entry may still be in there hidden, but I booted the system from a Hiren BootCD and manually deleted the wow.dll file that entry pointed to, as well as wow.ini and all the .tmp files in the same directory. So far nothing has popped up, but I’m keeping my fingers crossed. About to walk away from this system for the weekend, but I’ll take another look at it on Monday.

Again, thanks for all your help, and have a great weekend!

Todd

6

This is the registry key to look and how it should appear

[HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Classes\CLSID\{fbeb8a05-beee-4442-804e-409d6c4515e9}] @="ShellFolder for CD Burning"

[HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Classes\CLSID{fbeb8a05-beee-4442-804e-409d6c4515e9}\InProcServer32]
@=hex(2):25,00,53,00,79,00,73,00,74,00,65,00,6d,00,52,00,6f,00,6f,00,74,00,25,
00,5c,00,73,00,79,00,73,00,74,00,65,00,6d,00,33,00,32,00,5c,00,73,00,68,00,
65,00,6c,00,6c,00,33,00,32,00,2e,00,64,00,6c,00,6c,00,00,00
“ThreadingModel”=“Apartment”

[HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Classes\CLSID{fbeb8a05-beee-4442-804e-409d6c4515e9}\MergedFolder]
“Location”=“@shell32.dll,-12591”
“Attributes”=“0x0”
“AttributeMask”=“0xffffffff”
“ConflictOverlayIcon”=hex(2):25,00,53,00,79,00,73,00,74,00,65,00,6d,00,52,00,
6f,00,6f,00,74,00,25,00,5c,00,73,00,79,00,73,00,74,00,65,00,6d,00,33,00,32,
00,5c,00,69,00,6d,00,61,00,67,00,65,00,72,00,65,00,73,00,2e,00,64,00,6c,00,
6c,00,2c,00,2d,00,31,00,36,00,39,00,00,00

7

Thank you! It’s gone, and everything seems to be ok! I appreciate your help on this.

Todd

8

In that case methinks I will send you on your merry way :slight_smile:

Subject to no further problems :slight_smile:

I will remove my tools now and give some recommendations, but, I would like you to run for 24 hours or so and come back if you have any problems

Now the best part of the day ----- Your log now appears clean :thumbsup:

A good workman always cleans up after himself so…The following will implement some cleanup procedures as well as reset System Restore points:

Remove ComboFix
[*]Hold down the Windows key + R on your keyboard. This will display the Run dialogue box
[*]In the Run box, type in ComboFix /Uninstall
(Notice the space between the “x” and “/”)
then click OK

http://i1224.photobucket.com/albums/ee362/Essexboy3/Misc%20screen%20shots/CF_Uninstall-1.jpg

[]Follow the prompts on the screen
[]A message should appear confirming that ComboFix was uninstalled

Run OTL and hit the cleanup button. It will remove all the programmes we have used plus itself.

Clear Restore Points

Go Start > All Programmes > Accessories > System tools
Right click Disc Cleanup and select run as administrator
When it pops up at the first prompt select OK after it has done some calculations the tabs will appear
Select More Options tab
Press Sytem Restore and Shadow Copies Cleanup button

Now that you are clean, to help protect your computer in the future I recommend that you get the following free programmes:

Malwarebytes.

Update and run weekly to keep your system clean

Download and install FileHippo update checker and run it monthly it will show you which programmes on your system need updating and give a download link

If you use on-line banking then as an added layer of protection install Trusteer Rapport

It is critical to have both a firewall and anti virus to protect your system and to keep them updated. To keep your operating system up to date visit
[*]Microsoft Windows Update

To learn more about how to protect yourself while on the internet read our little guide How did I get infected in the first place ?Keep safe :wave: