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Other => Viruses and worms => Topic started by: BHBattaglin on September 05, 2012, 12:28:29 PM

Title: Reoccurring WIN64:Sirefef-a, Win32:ZAccess-IJ, Win32:Malware-gen
Post by: BHBattaglin on September 05, 2012, 12:28:29 PM
Hello,
Yesterday, I began getting regular messages from Avast saying that "Trogan Horse Blocked" referencing WIN64:Sirefef-a, Win32:ZAccess-IJ, Win32:Malware-gen.  Usually it reports that some file in C:\recycler\... is being moved to chest.
How should I proceed to remove this virus?

Thanks
Title: Re: Reoccurring WIN64:Sirefef-a, Win32:ZAccess-IJ, Win32:Malware-gen
Post by: Asyn on September 05, 2012, 12:30:17 PM
Please attach your logs. (MBAM, OTL and aswMBR..!!)
Instructions: http://forum.avast.com/index.php?topic=53253.0
Title: Re: Reoccurring WIN64:Sirefef-a, Win32:ZAccess-IJ, Win32:Malware-gen
Post by: BHBattaglin on September 17, 2012, 01:41:19 PM
Attached are log files.
Note that there are 2 versions of mbam log.  One before and one today.
I have not had any virus warnings since running mbam the first time.

Do you think my system is save again?

Best regards,
Bernard
Title: Re: Reoccurring WIN64:Sirefef-a, Win32:ZAccess-IJ, Win32:Malware-gen
Post by: BHBattaglin on September 17, 2012, 01:49:00 PM
Hello, the OTL log did not fit with the others...
Title: Re: Reoccurring WIN64:Sirefef-a, Win32:ZAccess-IJ, Win32:Malware-gen
Post by: Pondus on September 17, 2012, 02:06:33 PM
Malware removers are notified. It may take hours before one arrive so be patient


the second MBAM log you posted is a flash scan ..... update MBAM and run a quick scan ...if anything is found attach the log
Title: Re: Reoccurring WIN64:Sirefef-a, Win32:ZAccess-IJ, Win32:Malware-gen
Post by: essexboy on September 17, 2012, 03:23:51 PM
Hmm 'tis changing again

Warning This fix is only relevant for this system and no other, using on another computer may cause problems

Be advised that when the fix commences it will shut down all running processes and you may lose the desktop and icons, they will return on reboot

Run OTL
Code: [Select]
:OTL
[2012/09/06 02:40:55 | 000,000,000 | ---- | M] () -- C:\Documents and Settings\bhb\Local Settings\Application Data\¹º»¼½¾¿ÀÁÂÃÄÅÆÇÈÉÊËÌÍÎÏÐÑÒÓÔÕÖ×ØÙÚÛÜÝÞßàáâãäåæçèéêëìíîïðñòóôõö÷øùúûüýþÿ

:Files
ipconfig /flushdns /c
netsh int ip reset c:\resetlog.txt  /c
ipconfig /release /c
ipconfig /renew /c

:Commands
[purity]
[resethosts]
[emptytemp]
[CREATERESTOREPOINT]
[Reboot]THEN

Download and Install Combofix
 
Download ComboFix from one of the following locations:
Link 1  (http://download.bleepingcomputer.com/sUBs/ComboFix.exe)
Link 2 (http://www.forospyware.com/sUBs/ComboFix.exe)
 
VERY IMPORTANT !!! Save ComboFix.exe to your Desktop
 
* IMPORTANT - Disable your AntiVirus and AntiSpyware applications, usually via a right click on the System Tray icon. They may otherwise interfere with our tools. If you have difficulty properly disabling your protective programs, refer to this link here  (http://forums.whatthetech.com/How_Disable_your_Security_Programs_t96260.html&pid=494216#entry494216)
(http://img.photobucket.com/albums/v706/ried7/NSIS_disclaimer_ENG.png)

(http://img.photobucket.com/albums/v706/ried7/NSIS_extraction.png)

Notes:
1. Do not mouse-click Combofix's window while it is running. That may cause it to stall.
2. Do not "re-run" Combofix. If you have a problem, reply back for further instructions.
3.  If after the reboot you get errors about programmes being marked for deletion then reboot, that will cure it.


Please make sure you include the combo fix log in your next reply as well as describe how your computer is running now
Title: Re: Reoccurring WIN64:Sirefef-a, Win32:ZAccess-IJ, Win32:Malware-gen
Post by: BHBattaglin on September 17, 2012, 05:01:45 PM
Hello,
As per instructions from essexboy, I am running OTL with the provided script.
It has been "running" for 45min but the bottom status message remains fixed at
Killing Processes.  DO NOT INTERRUPT...
Nothing appears to be changing.

What now...
Title: Re: Reoccurring WIN64:Sirefef-a, Win32:ZAccess-IJ, Win32:Malware-gen
Post by: essexboy on September 17, 2012, 07:15:58 PM
OK stop OTL as MBAM is stopping it and then run the revised fix below

Code: [Select]
:OTL
[2012/09/06 02:40:55 | 000,000,000 | ---- | M] () -- C:\Documents and Settings\bhb\Local Settings\Application Data\¹º»¼½¾¿ÀÁÂÃÄÅÆÇÈÉÊËÌÍÎÏÐÑÒÓÔÕÖ×ØÙÚÛÜÝÞßàáâãäåæçèéêëìíîïðñòóôõö÷øùúûüýþÿ

:Files
ipconfig /flushdns /c
netsh int ip reset c:\resetlog.txt  /c
ipconfig /release /c
ipconfig /renew /c

:Commands
[purity]
[resethosts]
[emptyjava]
[CREATERESTOREPOINT]
[Reboot]
Title: Re: Reoccurring WIN64:Sirefef-a, Win32:ZAccess-IJ, Win32:Malware-gen
Post by: BHBattaglin on September 18, 2012, 12:01:40 AM
OK, Thanks.
OTL and Combofix have been run.
System now appears to start and run normally except that "links" from other programs into IE are not working.  For example the "Visit Forum" button from the Avast! support tab opens IE but does not set the address for navigation.  Same is true for links from my mail programs (Eudora).  This was not the case before.

Attached are OTL and Combofix logs.

Would you recommend running Malwarebytes in addtion to avast! in order to prevent this from happening again?
Title: Re: Reoccurring WIN64:Sirefef-a, Win32:ZAccess-IJ, Win32:Malware-gen
Post by: essexboy on September 18, 2012, 04:20:56 PM
Combofix resets IE to high security for the duration of the run.  Sometimes it forgets to reset

So go to Control Panel > Internet options
Under the advanced tab click reset
Restart IE and let me know what problems remain
Title: Re: Reoccurring WIN64:Sirefef-a, Win32:ZAccess-IJ, Win32:Malware-gen
Post by: BHBattaglin on September 18, 2012, 05:44:16 PM
Hi,
It was only necessary to reset IE as default browser (from within IE).

Now, would you recommend running Malwarebytes in addtion to avast! in order to prevent this from happening again?

Thanks for your support,
Bernard
Title: Re: Reoccurring WIN64:Sirefef-a, Win32:ZAccess-IJ, Win32:Malware-gen
Post by: essexboy on September 18, 2012, 07:16:19 PM
Malwarebytes is a nice complement to Avast

Subject to no further problems   :)

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:

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

We will now confirm that your hidden files are set to that, as some of the tools I use will change that(http://users.telenet.be/bluepatchy/miekiemoes/images/javaicon.gif)   Your Java is out of date.
Older versions have vulnerabilities that malware can use to infect your system.
Please follow these steps to remove older version of Java components and upgrade the application.

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

(http://img233.imageshack.us/img233/7729/mbamicontw5.gif) Malwarebytes (http://www.malwarebytes.org/mbam-download.php).

Update and run weekly to keep your system clean

Download and install FileHippo update checker (http://www.filehippo.com/updatechecker/) and run it monthly it will show you which programmes on your system need updating and give a download link

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 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 ? (http://www.geekstogo.com/forum/topic/225044-preventing-malware-and-safe-computing/)Keep safe  :wave: