Win64:Sirefef-A and Win32:Sirefef-AO Detection

[peulki]

Hi,

my avast told me an infection with Win64:Sirefef-A and Win32:Sirefef-AO. MBAM found two infected files (see log below) but the infection was still reported. The log below is the first one. I scanned a second time and MBAM didn't find anything else. I ran OTL, the logs are attached. What shall I do now?



Datenbank Version: v2012.06.04.07

Windows XP Service Pack 3 x86 NTFS
Internet Explorer 8.0.6001.18702
default :: PETRA-NOTEBOOK [Administrator]

04.06.2012 23:06:23
mbam-log-2012-06-04 (23-06-23).txt

Art des Suchlaufs: Quick-Scan
Aktivierte Suchlaufeinstellungen: Speicher | Autostart | Registrierung | Dateisystem | Heuristiks/Extra | HeuristiKs/Shuriken | PUP | PUM
Deaktivierte Suchlaufeinstellungen: P2P
Durchsuchte Objekte: 195143
Laufzeit: 14 Minute(n), 23 Sekunde(n)

Infizierte Speicherprozesse: 0
(Keine bösartigen Objekte gefunden)

Infizierte Speichermodule: 0
(Keine bösartigen Objekte gefunden)

Infizierte Registrierungsschlüssel: 0
(Keine bösartigen Objekte gefunden)

Infizierte Registrierungswerte: 0
(Keine bösartigen Objekte gefunden)

Infizierte Dateiobjekte der Registrierung: 1
HKCR\CLSID\{F3130CDB-AA52-4C3A-AB32-85FFC23AF9C1}\InProcServer32| (Trojan.Zaccess) -> Bösartig: (\\.\globalroot\systemroot\Installer\{8e36f98b-a2e0-6f11-7611-333b60c6ecdd}\n.) Gut: (%systemroot%\system32\wbem\wbemess.dll) -> Erfolgreich ersetzt und in Quarantäne gestellt.

Infizierte Verzeichnisse: 0
(Keine bösartigen Objekte gefunden)

Infizierte Dateien: 1
C:\WINDOWS\Installer\{8e36f98b-a2e0-6f11-7611-333b60c6ecdd}\n (Rootkit.0Access) -> Löschen bei Neustart.

(Ende)

[peulki]

Extras.Txt attached

[Asyn]

I ran OTL, the logs are attached. What shall I do now?

Please also attach your aswMBR log.
http://forum.avast.com/index.php?topic=53253.0

[peulki]

Sorry, it seems as I didn't read until the end. I hope I now have prepared all for you. Thanks for helping!

aswMBR log attached

[Asyn]

1. Sorry, it seems as I didn't read until the end.
2. I hope I now have prepared all for you.
3. Thanks for helping!

1. NP peulki.
2. Yes, now you have to wait a bit for one of the MW removers.
3. You're welcome.

[peulki]

While waiting, I have done several things today:
1. I did a full scan of the system with avast (not quick scan) -> 5 infected files were found and deleted but the notification of Sirefef-A and Sirefef-AO were still coming up
2. I did a full scan with MBAM (not quick scan) -> 2 infected files were found and deleted

After this there were no longer sirefef notifications. I don't know, if it is completely deleted so I did new OTL and aswMBR scans. I attach all logs (this time, no Extras.Txt exists). Perhaps you can see, if the trojan hides better or if he has realy gone now. Thanks.

-----------------
MBAM Log

Malwarebytes Anti-Malware (Test) 1.61.0.1400
www.malwarebytes.org

Datenbank Version: v2012.06.04.07

Windows XP Service Pack 3 x86 NTFS
Internet Explorer 8.0.6001.18702
default :: PETRA-NOTEBOOK [Administrator]

Schutz: Aktiviert

06.06.2012 17:01:28
mbam-log-2012-06-06 (17-01-28).txt

Art des Suchlaufs: Vollständiger Suchlauf
Aktivierte Suchlaufeinstellungen: Speicher | Autostart | Registrierung | Dateisystem | Heuristiks/Extra | HeuristiKs/Shuriken | PUP | PUM
Deaktivierte Suchlaufeinstellungen: P2P
Durchsuchte Objekte: 274878
Laufzeit: 1 Stunde(n), 23 Minute(n), 48 Sekunde(n)

Infizierte Speicherprozesse: 0
(Keine bösartigen Objekte gefunden)

Infizierte Speichermodule: 0
(Keine bösartigen Objekte gefunden)

Infizierte Registrierungsschlüssel: 0
(Keine bösartigen Objekte gefunden)

Infizierte Registrierungswerte: 0
(Keine bösartigen Objekte gefunden)

Infizierte Dateiobjekte der Registrierung: 0
(Keine bösartigen Objekte gefunden)

Infizierte Verzeichnisse: 0
(Keine bösartigen Objekte gefunden)

Infizierte Dateien: 2
C:\Dokumente und Einstellungen\default\Lokale Einstellungen\Anwendungsdaten\{8e36f98b-a2e0-6f11-7611-333b60c6ecdd}\n (Rootkit.0Access) -> Löschen bei Neustart.
C:\Dokumente und Einstellungen\default\Lokale Einstellungen\Temporary Internet Files\Content.IE5\4FVTY796\soft4[1].exe (Trojan.Agent) -> Erfolgreich gelöscht und in Quarantäne gestellt.

(Ende)

[essexboy]

Hi there this is the new variant.  On completion of this OTL run could you run a fresh MBAM quickscan and post that log please

 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

If you have Malwarebytes 1.6 or better installed please disable it for the duration of this run
To disable MBAM
Open the scanner and select the protection tab
Remove the tick from "Start with Windows"
Reboot and then run OTL


Run OTL

• Under the Custom Scans/Fixes box at the bottom, paste in the following
  

  :OTL
  O3 - HKU\S-1-5-21-1220945662-436374069-839522115-1004\..\Toolbar\WebBrowser: (no name) - {00000000-0000-0000-0000-000000000000} - No CLSID value found.
  O3 - HKU\S-1-5-21-1220945662-436374069-839522115-1004\..\Toolbar\WebBrowser: (no name) - {D4027C7F-154A-4066-A1AD-4243D8127440} - No CLSID value found.
  
  :Files
  ipconfig /flushdns /c
  C:\WINDOWS\Installer\{8e36f98b-a2e0-6f11-7611-333b60c6ecdd}
  
  :Commands
  [purity]
  [resethosts]
  [emptytemp]
  [CREATERESTOREPOINT]
  [Reboot]
• Then click the Run Fix button at the top
  
• Let the program run unhindered, reboot the PC when it is done
• Open OTL again and click the Quick Scan button. Post the log it produces in your next reply.

[peulki]

Well, I have Malwarebytes 1.61.0.1400 but there is no possibility to disable it as you propose. Perhaps it is because I use the test version?

[essexboy]

OK run OTL and if it should freeze then re-run it but delete the following line from the script

[emptytemp]

[peulki]

Ok I found it. It was a right click on the icon in the task menu....

Malwarebytes Anti-Malware (Test) 1.61.0.1400
www.malwarebytes.org

Datenbank Version: v2012.06.04.07

Windows XP Service Pack 3 x86 NTFS
Internet Explorer 8.0.6001.18702
default :: PETRA-NOTEBOOK [Administrator]

Schutz: Deaktiviert

07.06.2012 23:27:52
mbam-log-2012-06-07 (23-27-52).txt

Art des Suchlaufs: Quick-Scan
Aktivierte Suchlaufeinstellungen: Speicher | Autostart | Registrierung | Dateisystem | Heuristiks/Extra | HeuristiKs/Shuriken | PUP | PUM
Deaktivierte Suchlaufeinstellungen: P2P
Durchsuchte Objekte: 194285
Laufzeit: 9 Minute(n), 39 Sekunde(n)

Infizierte Speicherprozesse: 0
(Keine bösartigen Objekte gefunden)

Infizierte Speichermodule: 0
(Keine bösartigen Objekte gefunden)

Infizierte Registrierungsschlüssel: 0
(Keine bösartigen Objekte gefunden)

Infizierte Registrierungswerte: 0
(Keine bösartigen Objekte gefunden)

Infizierte Dateiobjekte der Registrierung: 0
(Keine bösartigen Objekte gefunden)

Infizierte Verzeichnisse: 0
(Keine bösartigen Objekte gefunden)

Infizierte Dateien: 0
(Keine bösartigen Objekte gefunden)

(Ende)

[essexboy]

Are you still getting the alerts ?

[peulki]

No but they allready stopped after the full scan with Malwarebytes on 6th June.
Yesterday Malwarebytes sent alerts for having stopped outgoing trials to enter a dangerous website. I could reactivate Malwarebytes and see if these alerts reappear.

[essexboy]

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 OTL

• Under the Custom Scans/Fixes box at the bottom, paste in the following
  

  :Commands
  [resethosts]
  [emptytemp]
  [CLEARALLRESTOREPOINTS]
   [Reboot]

• Then click the Run Fix button at the top
  
• Let the program run unhindered, reboot the PC when it is done

Run 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

• Click Start.
• Open My Computer.
• Select the Tools menu and click Folder Options.
• Select the View Tab.
• Under the Hidden files and folders heading select Do not show hidden files and folders.
  
• Click Yes to confirm.
• Click OK.

   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:

• Go to this site  and click Do I have Java
  
• It will check your current version and then offer to update to the latest version

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

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:

[peulki]

Thanks a lot for your help

[essexboy]