topic Re: How to remove Trojan Horse ZeroAccess in Norton Internet Security / Norton AntiVirus

How to remove Trojan Horse ZeroAccess

steve2234 — Thu, 03 May 2012 00:00:36 GMT

I am running windows XP Media Center Edition Version 2002 with Service Pack 3. It looks like my system has been infected with the Trojan.Zeroaccess!inf. It seems from the Protection Logs that a number of files have logged as infected. I have disconnected my computer from the network.

Can someone help me with this problem?

Thanks.

Re: How to remove Trojan Horse ZeroAccess

Quads — Thu, 03 May 2012 00:12:41 GMT

Re Connect to the internet so that the program can be used as I want it to download it's definitions

Please read carefully

1. Please download aswMBR hxxp://public.avast.com/~gmerek/aswMBR.exe to your desktop. (replace the hxxp with http)
Double click the aswMBR.exe icon to run it
it will ask to download extra definitions - ALLOW IT / Yes
Click the Scan button to start the scan
On completion of the scan, click the save log button, save it to your desktop and Please attach the log in the post back, Don't have the program fix anything.

Quads

Re: How to remove Trojan Horse ZeroAccess

steve2234 — Thu, 03 May 2012 02:29:13 GMT

Ok, I ran the program and attache the log file.

Re: How to remove Trojan Horse ZeroAccess

Quads — Thu, 03 May 2012 02:49:22 GMT

X86 system, Ok, and I know the Windows driver involved, just in case.

Please read carefully and follow these steps.

Download TDSSKiller from http://support.kaspersky.com/faq/?qid=208280684 click on the TDSSkiller.exe green link.

Double click on TDSSKiller.exe to run the application,

Open the Change Parameters option and select the detect TDLsystem

Then on Start Scan.

If an infected file is detected, the default action will be Cure, click on Continue.
If a suspicious file is detected, the default action will be Skip, click on Continue.
It may ask you to reboot the computer to complete the process. Click on Reboot Now.
If no reboot is require, click on Report. A log file should appear. Please copy and paste the contents of that file here.
If a reboot is required, the report can also be found in your root directory, (usually C:\ folder) in the form of "TDSSKiller.[Version]_[Date]_[Time]_log.txt". Please attach the log in the post back

Due to the KB folder still being left behind we will use a different program later.

Quads

Re: How to remove Trojan Horse ZeroAccess

steve2234 — Thu, 03 May 2012 05:14:37 GMT

Ok attached is the log file from the TDSKiller.

Re: How to remove Trojan Horse ZeroAccess

Quads — Thu, 03 May 2012 05:21:41 GMT

Ok,

Change the setting beside these entries

01:02:31.0640 5588 \Device\Harddisk0\DR0 ( TDSS File System ) - skipped by user
01:02:31.0640 5588 \Device\Harddisk0\DR0 ( TDSS File System ) - User select action: Skip

to Delete

Quads

Re: How to remove Trojan Horse ZeroAccess

steve2234 — Thu, 03 May 2012 05:50:24 GMT

Sorry, I am confused. Am I suppose to re-run the TDSSkiller again and select delete?

Re: How to remove Trojan Horse ZeroAccess

Quads — Thu, 03 May 2012 05:51:41 GMT

Yes

Re: How to remove Trojan Horse ZeroAccess

steve2234 — Thu, 03 May 2012 05:54:59 GMT

ok done.

Re: How to remove Trojan Horse ZeroAccess

Quads — Thu, 03 May 2012 05:58:04 GMT

Now we have to go about finding leftovers (if any exists).

Quads

Re: How to remove Trojan Horse ZeroAccess

steve2234 — Thu, 03 May 2012 06:00:49 GMT

Let me know what to do next.

Thanks!!!

Re: How to remove Trojan Horse ZeroAccess

Quads — Thu, 03 May 2012 06:07:01 GMT

Read all of this message first

Download Combofix http://www.bleepingcomputer.com/download/anti-virus/combofix

Ensure that Combofix is saved directly to the Desktop <--- Very important
Disable all security programs as they will have a negative effect on Combofix,
Close any open browsers and any other programs you might have running

Doiwnload the attached CFscript.txt, Now drag the CFScript.txt into the ComboFix.exe

If you are using windows XP It might display a pop up saying that "Recovery console is not installed, do you want to install?" Please select yes & let it download the files it needs to do this. Once the recovery console is installed Combofix will then offer to scan for malware. Select continue or yes.
When finished, it will produce a report for you. Please post the "C:\ComboFix.txt" for further review

****Note: Do not mouseclick combofix's window while it's running. That may cause it to stall or freeze ****

Note: ComboFix may reset a number of Internet Explorer's settings, including making it the default browser.
Note: Combofix prevents autorun of ALL CDs, floppies and USB devices to assist with malware removal & increase security.

*EXTRA NOTES*

If Combofix detects any Rootkit/Bootkit activity on your system it will give a warning and prompt for a reboot, you must allow it to do so.
If Combofix reboot's due to a rootkit, the screen may stay black for several minutes on reboot, this is normal
If after running Combofix you receive any type of warning message about registry key's being listed for deletion when trying to open certain items, reboot the system and this will fix the issue (Those items will not be deleted)

Quads

Re: How to remove Trojan Horse ZeroAccess

steve2234 — Thu, 03 May 2012 13:17:53 GMT

Ok, ran Combofix and attached is the log file.

Re: How to remove Trojan Horse ZeroAccess

Quads — Thu, 03 May 2012 23:08:20 GMT

Why did you not have the script as the correct name as stated in the instructions, you had "CFscript.txt.URL"

Quads

Re: How to remove Trojan Horse ZeroAccess

steve2234 — Thu, 03 May 2012 23:47:02 GMT

I don't know why or how the .URL extention ended up on the script file. should I run throught the procedure again making sure the script is the correct name?

Re: How to remove Trojan Horse ZeroAccess

Quads — Thu, 03 May 2012 23:53:43 GMT

Yes. It should end with .txt (no .URL) Combofix does not understand the name.

Quads

Re: How to remove Trojan Horse ZeroAccess

steve2234 — Fri, 04 May 2012 02:04:43 GMT

Ok, I re-ran ComboFix and attached the log file.

Re: How to remove Trojan Horse ZeroAccess

Quads — Fri, 04 May 2012 02:21:00 GMT

That has taken care of the main Rootkit

Now time to scan the hole system to find anything else before using another program to do the final script cleanup

Please read carefully

Please scan with ESET next Using Internet Explorer

I'd like us to scan your machine with ESET OnlineScan

Hold down Control and click on the following link to open ESET OnlineScan in a new window.
ESET OnlineScan
Click the button.
For alternate browsers only: (Microsoft Internet Explorer users can skip these steps)
- Click on to download the ESET Smart Installer. Save it to your desktop.
- Double click on the icon on your desktop.
Check
Click the button.
Accept any security warnings from your browser.
Under scan settings, check and DON'T (NO) check Remove found threats (reason for this is we don't want something deleted and then Windows won't load).
Click Advanced settings and select the following:
- Scan potentially unwanted applications
- Scan for potentially unsafe applications
- Enable Anti-Stealth technology
ESET will then download updates for itself, install itself, and begin scanning your computer. Please be patient as this can take some time.
Copy and paste the resulting log in your next reply

If you think a log should have been generated then go to C:\Program Files\ESET\ESET Online Scanner\log.txt to find it.

Quads

Re: How to remove Trojan Horse ZeroAccess

steve2234 — Fri, 04 May 2012 15:16:51 GMT

Ok I ran the ESET Online Scanner, took almost 12 hours to complete and found 39 Infected Files.

San Results attched and Log attached.

Re: How to remove Trojan Horse ZeroAccess

Quads — Sat, 05 May 2012 00:29:16 GMT

I can deal with these in the final cleanup process.

Download OTL hxxp://oldtimer.geekstogo.com/OTL.exe (change the hxxp to http) save it to your Desktop.

Double click on OTL.exe to run it. Right click OTL.exe and select run as administator for Vista and Win 7.

Click the Scan All Users checkbox.

Change file age to 60 days

Press the

Quads