Win32:ZAccess-PB

[Denjin]

I have this virus and Avast is constantly blocking it so I don't know if my personal information has been compromised or not but I need your help to get rid of it. I saw some instructions on how to deal with it manually but it didn't really help so I'll just post up the logs for you guys. I'm not sure of the exact location and file names of the infected files but I know one of them is '800000064' and the other used to be '800000032' but now that one no longer shows up as being blocked but instead a file with almost all zeros is shown as infected. They're all from the same folder and Avast will say 'Trojan Horse Blocked' every five minutes or so. The Malware scan found the folder where they're located and I clicked 'Delete' but to no avail. The files are in C:\Windows\Installer\{bf8c89f3-ece6-27cb-7244-993ec2b7c0e3}\U. Thank you so much.

[magna86]

@Denjin

Hello and Welcome to avast!



> Download ComboFix from here and save it to your Desktop.
If you are unsure how ComboFix works please read this guide carefully.
note: ComboFix must be downloaded to your Desktop.

> Temporarily disable your AntiVirus program.
If you are unsure how to do this please read this or this Instruction.

How to disable avast:

• Right-click on the avast! icon in the lower right corner of the screen and choose Open Avast! User Interface.
  
• In the window that opens on the top right corner, click Settings.
  
• In a new window that opens, choose the option Troubleshooting, Uncheck Enable avast! self-defense, and click OK.
  
  
• Right-click on the avast! icon in the lower right corner of the screen and select avast! shield controls .
  
• In the menu that appears, choose Disable Permanently. When you are prompted to turn off security, click Yes.

Note: Do not forget to turn on this option after the cleaning.



> Run ComboFix. Click on I Agree!
ComboFix will check if there is a newer version of ComboFix available.
Click Yes if prompted to download.
ComboFix will display DISCLAIMER OF WARRANTY ON SOFTWARE.
Click Yes to allow ComboFix to continue.
If Recovery Console is not installed, ComboFix will offer download & installation.
Click Yes to allow ComboFix to install Recovery Console.
Note:Do not mouse-click Combofix's window while it is running.
If you see a message like "Illegal operation attempted on a registry key that has been marked for deletion" just restart computer once more.


> When the tool is finished, it will produce a log report for you. (typical location: C:\ComboFix.txt )
  Attach log reports ( ComboFix.txt) back to topic.

[Denjin]

Just to be sure, is it safe to turn Avast off? I hear this virus is pretty serious in that it opens backdoors and flows in a ton of dangerous stuff as well allows hackers to take total control of the personal information on my computer. Avast has been blocking it so far so I just want to be 100% sure that it's okay to turn it off. There's no way to run ComboFix with Avast still on?

[magna86]

Yes, you need to temporaly disable avast before you running Combofix.

ComboFix is multiplied & multitask tools and it works quite differently from other tools / software. Malware will be stopped by any action before it gets as target for removal. 
 
> Disable avast, run ComboFix as instructed and attach here Combofix.txt log.

[Denjin]

Alright, I disabled Avast and ran ComboFix but when it started, it said Avast was still active and that it would run regardless. My computer is fine after it finished so don't think anything too bad happened but I'm sure I followed your steps on how to disable Avast before starting it. Also, the virus only pops up when I establish an Internet connection. I rehooked up the Internet and I haven't seen Avast tell me it's blocked the virus like usual (and yes I turned Avast back on before connecting to the Internet again after ComboFix was done) so hopefully that's a good sign. Here's the log.

[magna86]

... but I'm sure I followed your steps on how to disable Avast before starting it.

It is important that you have disabled AV. CF, sometimes can not correctly read that information (is AV on or off) and then pop-up warning.
------------------------------




Multiple Antivirus Programs

You are running more than 1 Antivirus program!


AV: avast!
AV:Anvi Smart Defender (Anvisoft)



Running - more than one - antivirus program is not recommended because:[list=1]

• They can conflict with each other.
• Report the other antivirus software as malicious.
• Antivirus programs use an enormous amount of computer's resources... actively scanning your computer.
• Can cause your computer to become unstable...run slowly and even, in rare cases, BSOD crash...etc

I strongly suggest you uninstall one of them.  Which one, is your decision.


*******************************


> Open notepad and copy/paste the text present inside the code box below:

Code: [Select]


KillAll::

Folder::
c:\windows\Installer\{bf8c89f3-ece6-27cb-7244-993ec2b7c0e3}
c:\windows\Installer\{bf8c89f3-ece6-27cb-7244-993ec2b7c0e3}\L
c:\windows\Installer\{bf8c89f3-ece6-27cb-7244-993ec2b7c0e3}\U
c:\program files (x86)\AVG Secure Search

ClearJavaCache::

FileLook::
c:\windows\system32\services.exe




Save this as CFScript.txt


> Again, temporaly disable avast! antivirus as you did before.




Close all browser windows and refering to the picture above.

Referring to the screenshot above, drag CFScript.txt into ComboFix.exe.
ComboFix will will re-run. When finished, it will produce a log for you.
Attach the contents of the log in your next reply. (typical location: C:\ComboFix.txt )

[Denjin]

Everything went smoothly this time.

[magna86]

It is necessary to uninstall ComboFix :

• Click Start (or ) then Run.
  
  
  On Windows7 or Vista you may use Start Search field if Run is not available.
  
  
• In the line of text type in (Copy) the following:

Code: [Select]

ComboFix /Uninstall
Note that there is a space between " ComboFix " and " /Uninstall " .

• then click OK (or press Enter ).

Wait for the uninstall process is complete.


***************************


Re-run OTL.exe.

• Copy and paste the following text written inside of the quote box into the Custom Scans/Fixes box.
  
  
  Code: [Select]
  
:Files
c:\users\Mustafa\AppData\Roaming\Anvisoft
c:\programdata\Anvisoft
c:\program files (x86)\Anvisoft


  • Then click the Run Fix button at the top.
    
  • Let the program run unhindered; it will reboot the system when it is done and open notepad with logreport.
  
  
  > There is no need to attach that logreport.

***************************


> Re-run OTL and click on CleanUp! button.

You will be asked to reboot the machine to finish the cleanup process, choose Yes.
After the reboot all the tools we used should be gone.
Note: Some more recently created tools may not yet be removed by OTL. Feel free to manually delete any tools it leaves behind.



**************************


Download AppRemover (~ 6MB) on Desktop .
Run it by double-clicking...

Click Next, choose the second option (Clean Up a Failed Uninstall), confirm with Continue, go to Next, wait to be finished, choose any antivirus leftovers, scan and remove it by clicking on the Next .


***************************


I recommended to keep Malwarebytes and to use MCShield if you will.
You may download MCShield from one of the following links:

MyCity -  Official download link
Softpedija - Mirror download link

It will prevent infection by computer via USB flash drive, mobile phone or any other memory card.
And not only will prevent infection, but it will immediately clean flash drive, memory card or external HDD.

[Denjin]

Alright, so everything else is good then?

[magna86]

Alright, so everything else is good then?

Yap, you are good. If you still have problem, tell me but rootkit is disinfected and its loading files were removed.

[Denjin]

Okay, thank you so much for the help. I really appreciate it. Computer is running smoothly.

[magna86]

Computer is running smoothly.

I know.     

...be safe.