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How can I be sure my computer is clean?


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8 replies to this topic

#1 Goron

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Posted 06 January 2009 - 11:04 AM

-- Removed all the tracking cookie entries since they are just wasted space.

A while back I was infected with a Vundo variant that I thought I cleaned out with a combination of SuperAntiSpyware and AVG.

SUPERAntiSpyware Scan Log
http://www.superantispyware.com

Generated 12/16/2008 at 11:58 PM

Application Version : 4.23.1006

Core Rules Database Version : 3676
Trace Rules Database Version: 1655

Scan type : Complete Scan
Total Scan Time : 00:28:12

Memory items scanned : 856
Memory threats detected : 0
Registry items scanned : 6573
Registry threats detected : 2
File items scanned : 24469
File threats detected : 22

Unclassified.Unknown Origin
HKU\S-1-5-21-3939397786-1339517228-2114085592-1000\Software\Microsoft\Windows\CurrentVersion\Ext\Stats\{0682E46A-7040-4049-A6FD-0BCFBC673AD8}

Adware.Vundo Variant
HKU\S-1-5-21-3939397786-1339517228-2114085592-1000\Software\Microsoft\Windows\CurrentVersion\Ext\Stats\{3713F9EE-C059-4540-B697-987EF263A088}

Trojan.SVCHost/Fake
C:\PROGRAM FILES\REMOTE TOOLS\MSRA-TEMP\SVCHOST.EXE
C:\PROGRAMDATA\MICROSOFT\NETWORK\CONNECTIONS\CM\MSRA-CA\SVCHOST.EXE

Just recently, my AVG/SuperAntiSpyware would not download updates after I ran RegistryMechanic. I suspected that RegistryMechanic did something funky with the services, but this was not the case. I thought it was AVG having problems, so I uninstalled and reinstalled and it did not work.

I ended up going into Safe Mode and ran SAS and found it found the following:

SUPERAntiSpyware Scan Log
http://www.superantispyware.com

Generated 01/05/2009 at 08:09 PM

Application Version : 4.23.1006

Core Rules Database Version : 3682
Trace Rules Database Version: 1660

Scan type : Complete Scan
Total Scan Time : 00:27:31

Memory items scanned : 696
Memory threats detected : 0
Registry items scanned : 6566
Registry threats detected : 2
File items scanned : 24552
File threats detected : 45

Rootkit.Cloaked/Service-GEN
HKLM\system\controlset001\services\msqpdxserv.sys
C:\WINDOWS\SYSTEM32\DRIVERS\MSQPDXUCVGBCFQ.SYS
HKLM\system\controlset002\services\msqpdxserv.sys

Trojan.Unclassified-Packed/Suspicious
C:\USERS\GORDON\DESKTOP\I600\COREPLAYER\COREHANDLER.DLL

I also downloaded, Malwarebyte's Anti-Malware and ran a scan after the SAS scan in Safe mode and it found some more infections.

Malwarebytes' Anti-Malware 1.32
Database version: 1624
Windows 6.0.6001 Service Pack 1

1/6/2009 11:18:07 PM
mbam-log-2009-01-06 (23-18-07).txt

Scan type: Full Scan (C:\|)
Objects scanned: 145378
Time elapsed: 30 minute(s), 43 second(s)

Memory Processes Infected: 0
Memory Modules Infected: 0
Registry Keys Infected: 5
Registry Values Infected: 0
Registry Data Items Infected: 0
Folders Infected: 1
Files Infected: 4

Memory Processes Infected:
(No malicious items detected)

Memory Modules Infected:
(No malicious items detected)

Registry Keys Infected:
HKEY_CLASSES_ROOT\videosoft (Trojan.DNSChanger) -> Quarantined and deleted successfully.
HKEY_CURRENT_USER\SOFTWARE\Microsoft\affri (Malware.Trace) -> Quarantined and deleted successfully.
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\affri (Malware.Trace) -> Quarantined and deleted successfully.
HKEY_CURRENT_USER\SOFTWARE\Microsoft\contim (Trojan.Vundo) -> Quarantined and deleted successfully.
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\dslcnnct (Trojan.Vundo) -> Quarantined and deleted successfully.

Registry Values Infected:
(No malicious items detected)

Registry Data Items Infected:
(No malicious items detected)

Folders Infected:
C:\resycled (Trojan.DNSChanger) -> Quarantined and deleted successfully.

Files Infected:
C:\resycled\boot.com (Trojan.DNSChanger) -> Quarantined and deleted successfully.
C:\Windows\System32\mcrh.tmp (Malware.Trace) -> Quarantined and deleted successfully.
C:\Windows\System32\msqpdxfxbuweix.dll (Trojan.Agent) -> Quarantined and deleted successfully.
C:\Windows\System32\clkcnt.txt (Trojan.Vundo) -> Quarantined and deleted successfully.

How do I know if I'm clean now?

BC AdBot (Login to Remove)

 


#2 quietman7

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Posted 06 January 2009 - 12:00 PM

There are no shortcuts or guarantees when it comes to malware removal. Sometimes it takes several efforts with different, the same or more powerful tools to do the job. Even then, with some types of malware infections, the task can be arduous.

Rescan again with MBAM (Quick Scan) in normal mode and check all items found for removal. Don't forgot to check for database updates through the program's interface (preferable way) before scanning and to reboot afterwards. Failure to reboot normally (not into safe mode) will prevent MBAM from removing all the malware. When done, click the Logs tab and copy/paste the contents of the new report in your next reply.

Also let us know how your computer is running and if there are any more reports/signs of infection.
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#3 Goron

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Posted 07 January 2009 - 11:17 AM

Rescanned in normal mode with full scan (whoops)

Malwarebytes' Anti-Malware 1.32
Database version: 1627
Windows 6.0.6001 Service Pack 1

1/8/2009 12:12:08 AM
mbam-log-2009-01-08 (00-12-08).txt

Scan type: Full Scan (C:\|D:\|E:\|)
Objects scanned: 149126
Time elapsed: 1 hour(s), 10 minute(s), 28 second(s)

Memory Processes Infected: 0
Memory Modules Infected: 0
Registry Keys Infected: 0
Registry Values Infected: 0
Registry Data Items Infected: 0
Folders Infected: 0
Files Infected: 0

Memory Processes Infected:
(No malicious items detected)

Memory Modules Infected:
(No malicious items detected)

Registry Keys Infected:
(No malicious items detected)

Registry Values Infected:
(No malicious items detected)

Registry Data Items Infected:
(No malicious items detected)

Folders Infected:
(No malicious items detected)

Files Infected:
(No malicious items detected)

Everything seems to be running fine as before. Updates everything are going through.

#4 quietman7

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Posted 07 January 2009 - 11:28 AM

Lets do another scan to see if we find anything else that MBAM may have missed.

Please download ATF Cleaner by Atribune & save it to your desktop. DO NOT use yet.
alternate download link

Please download and install SUPERAntiSpyware Free
  • Double-click SUPERAntiSypware.exe and use the default settings for installation.
  • An icon will be created on your desktop. Double-click that icon to launch the program.
  • If asked to update the program definitions, click "Yes". If not, update the definitions before scanning by selecting "Check for Updates". (If you encounter any problems while downloading the updates, manually download them from here. Double-click on the hyperlink for Download Installer and save SASDEFINITIONS.EXE to your desktop. Then double-click on SASDEFINITIONS.EXE to install the definitions.)
  • In the Main Menu, click the Preferences... button.
  • Click the "General and Startup" tab, and under Start-up Options, make sure "Start SUPERAntiSpyware when Windows starts" box is unchecked.
  • Click the "Scanning Control" tab, and under Scanner Options, make sure the following are checked (leave all others unchecked):
    • Close browsers before scanning.
    • Scan for tracking cookies.
    • Terminate memory threats before quarantining.
  • Click the "Close" button to leave the control center screen and exit the program.
  • Do not run a scan just yet.
Reboot your computer in "Safe Mode" using the F8 method. To do this, restart your computer and after hearing your computer beep once during startup (but before the Windows icon appears) press the F8 key repeatedly. A menu will appear with several options. Use the arrow keys to navigate and select the option to run Windows in "Safe Mode".

Double-click ATF-Cleaner.exe to run the program.
  • Under Main "Select Files to Delete" choose: Select All.
  • Click the Empty Selected button.
  • If you use Firefox browser click Firefox at the top and choose: Select All
  • Click the Empty Selected button.
    If you would like to keep your saved passwords, please click No at the prompt.
  • If you use Opera browser click Opera at the top and choose: Select All
  • Click the Empty Selected button.
    If you would like to keep your saved passwords, please click No at the prompt.
  • Click Exit on the Main menu to close the program.
Note: On Vista, "Windows Temp" is disabled. To empty "Windows Temp" ATF-Cleaner must be "Run as an Administrator".

Scan with SUPERAntiSpyware as follows:
  • Launch the program and back on the main screen, under "Scan for Harmful Software" click Scan your computer.
  • On the left, make sure you check C:\Fixed Drive.
  • On the right, under "Complete Scan", choose Perform Complete Scan and click "Next".
  • After the scan is complete, a Scan Summary box will appear with potentially harmful items that were detected. Click "OK".
  • Make sure everything has a checkmark next to it and click "Next".
  • A notification will appear that "Quarantine and Removal is Complete". Click "OK" and then click the "Finish" button to return to the main menu.
  • If asked if you want to reboot, click "Yes" and reboot normally.
  • To retrieve the removal information after reboot, launch SUPERAntispyware again.
    • Click Preferences, then click the Statistics/Logs tab.
    • Under Scanner Logs, double-click SUPERAntiSpyware Scan Log.
    • If there are several logs, click the current dated log and press View log. A text file will open in your default text editor.
    • Please copy and paste the Scan Log results in your next reply.
  • Click Close to exit the program.
If you cannot boot into safe mode, then perform the above instructions in normal mode.
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#5 Goron

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Posted 08 January 2009 - 10:01 AM

Here's the latest log after SAS:

SUPERAntiSpyware Scan Log
http://www.superantispyware.com

Generated 01/08/2009 at 10:53 PM

Application Version : 4.24.1004

Core Rules Database Version : 3700
Trace Rules Database Version: 1676

Scan type : Complete Scan
Total Scan Time : 00:40:44

Memory items scanned : 223
Memory threats detected : 0
Registry items scanned : 6558
Registry threats detected : 8
File items scanned : 102197
File threats detected : 0

Rogue.Component/Trace
HKLM\Software\Classes\MSQPDXVX
HKLM\Software\Classes\MSQPDXVX#msqpdxrun
HKLM\Software\Classes\MSQPDXVX#msqpdxpff
HKLM\Software\Classes\MSQPDXVX#msqpdxaff
HKLM\Software\Classes\MSQPDXVX#msqpdxinfo
HKLM\Software\Classes\MSQPDXVX#msqpdxid
HKLM\Software\Classes\MSQPDXVX#msqpdxsrv
HKLM\Software\Classes\MSQPDXVX#msqpdxpos

#6 quietman7

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Posted 08 January 2009 - 12:18 PM

How is your computer running now? Any more reports/signs of infection?
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#7 Goron

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Posted 09 January 2009 - 08:44 AM

Scanned with Malware and SAS, no signs of infections so far. Computer's running fine.

Thanks

#8 quietman7

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Posted 09 January 2009 - 08:54 AM

You're welcome.

If there are no more problems or signs of infection, you should Create a New Restore Point to prevent possible reinfection from an old one. Some of the malware you picked up could have been saved in System Restore. Since this is a protected directory your tools cannot access to delete these files, they sometimes can reinfect your system if you accidentally use an old restore point. Setting a new restore point AFTER cleaning your system will help prevent this and enable your computer to "roll-back" to a clean working state.

The easiest and safest way to do this is:
  • Go to Start > Programs > Accessories > System Tools and click "System Restore".
  • Choose the radio button marked "Create a Restore Point" on the first screen then click "Next". Give the R.P. a name, then click "Create". The new point will be stamped with the current date and time. Keep a log of this so you can find it easily should you need to use System Restore.
  • Then use Disk Cleanup to remove all but the most recently created Restore Point.
  • Go to Start > Run and type: Cleanmgr
  • Click "Ok". Disk Cleanup will scan your files for several minutes, then open.
  • Click the "More Options" tab, then click the "Clean up" button under System Restore.
  • Click Ok. You will be prompted with "Are you sure you want to delete all but the most recent restore point?"
  • Click Yes, then click Ok.
  • Click Yes again when prompted with "Are you sure you want to perform these actions?"
  • Disk Cleanup will remove the files and close automatically.
Vista Users can refer to these links: Create a New Restore Point and Disk Cleanup.

Tips to protect yourself against malware and reduce the potential for re-infection:Avoid gaming sites, underground web pages, pirated software, crack sites, and peer-to-peer (P2P) file sharing programs. They are a security risk which can make your computer susceptible to a smörgåsbord of malware infections, remote attacks, exposure of personal information, and identity theft. Many malicious worms and Trojans spread across P2P file sharing networks, gaming and underground sites. Users visiting such pages may see innocuous-looking banner ads containing code which can trigger pop-up ads and Flash ads that install viruses, Trojans and spyware. Ads are a target for hackers because they offer a stealthy way to distribute malware to a wide range of Internet users. The best way to reduce the risk of infection is to avoid these types of web sites and not use any P2P applications. Read P2P Software User Advisories and Risks of File-Sharing Technology.

When is AUTORUN.INF really an AUTORUN.INF?. Keeping Autorun enabled on USB and other removable drives has become a significant security risk due to the increasing number of malware variants that can infect them and transfer the infection to your computer. For more information on this risk, please read USB-Based Malware Attacks and Please disable Autorun asap!.
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#9 ItWouldRuin

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Posted 09 January 2009 - 12:04 PM

You can never be 100 % safe, mate.

The best thing you can do is to have an updated antivirus program, an updated firewall and several updated antispyware programs.




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