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I feel so unclean


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#1 agilulf

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Posted 30 October 2008 - 03:56 PM

Hello All,

My old supervisor, seems to have browsed his way into malware. Our company's AV software CA Threat Manager, found the several viruses and even though they are being cured, they keep trying to come back

Win32/SilyDl.FSY
Win32/Fake.Alert.IJ
Win32/Crushpy!generic
Win32/Eldycow!generic

I have run ATF cleaner, CCleaner, HijackThis, Malwarebytes, SuperAntiSpyware, and Combofix on his PC, I have copies of the logs

I am concerned, because Malwarebytes found 15 infected Objects, and even though it says it cleaned them, I am afraid that there are still things left on there, and they are trying to come back

Malwarebytes found
Trojan.Agent
Trojan Fake Alert
Trojan Zlob
Rootkit.Agent
Trojan.TDSS

and more

He has Windows XP Pro with SP2

Please help me clean this PC, thanks

Edited by agilulf, 30 October 2008 - 03:59 PM.


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#2 rigel

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Posted 30 October 2008 - 07:13 PM

Hi agilulf and welcome to BleepingComputer :thumbsup:
These two can mean real bad news.

Rootkit.Agent
Trojan.TDSS

Please update and rerun Malwarebytes using the following instructions:
On the Scanner tab:
  • Make sure the "Perform Quick Scan" option is selected.
  • Then click on the Scan button.
  • If asked to select the drives to scan, leave all the drives selected and click on the Start Scan button.
  • The scan will begin and "Scan in progress" will show at the top. It may take some time to complete so please be patient.
  • When the scan is finished, a message box will say "The scan completed successfully. Click 'Show Results' to display all objects found".
  • Click OK to close the message box and continue with the removal process.
Back at the main Scanner screen:
  • Click on the Show Results button to see a list of any malware that was found.
  • Make sure that everything is checked, and click Remove Selected.
  • When removal is completed, a log report will open in Notepad.
  • The log is automatically saved and can be viewed by clicking the Logs tab in MBAM.
  • Copy and paste the contents of that report in your next reply and exit MBAM.
Note:
-- If MBAM encounters a file that is difficult to remove, you may be asked to reboot your computer so it can proceed with the disinfection process. Regardless if prompted to restart the computer or not, please do so immediately. Failure to reboot normally (not into safe mode) will prevent MBAM from removing all the malware.

-- MBAM may make changes to your registry as part of its disinfection routine. If you're using other security programs that detect registry changes (like Spybot's Teatimer), they may interfere with the fix or alert you after scanning with MBAM. Please disable such programs until disinfection is complete or permit them to allow the changes.


One word of caution about ComboFix
Please note the message text in blue at the top of this forum.

ComboFix is an extremely powerful tool which should only be used when instructed to do so by someone who has been properly trained. ComboFix is intended by its creator to be "used under the guidance and supervision of an expert", NOT for private use. Please read Combofix's Disclaimer. Using this tool incorrectly could lead to disastrous problems with your operating system such as preventing it from ever starting again.

"In a world where you can be anything, be yourself." ~ unknown

"Fall in love with someone who deserves your heart. Not someone who plays with it. Will Smith


#3 agilulf

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Posted 31 October 2008 - 09:22 AM

Okay, I am re-running malwarebytes, I checked and there was a version update since it was installed yesterday so I pulled down the update.

I am the company IT person, so I was cautious and ran combofix following the instructions, and his computer did reboot and startup okay, but there were some files that combofix deleted.

I still suspect that something is there that none of the scanners are picking up, becuase his antivirus software showed cured infections, even after I had completed the first scans and fixes.

I checked the Computer Associates AV software this morning and it had also pulled down new virus definitions. I will post the log results here shortly after they complete.

Thanks for your assistance.

#4 agilulf

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Posted 31 October 2008 - 10:00 AM

Here is the Quick Scan log

Malwarebytes' Anti-Malware 1.30
Database version: 1343
Windows 5.1.2600 Service Pack 2

10/31/2008 10:26:11 AM
mbam-log-2008-10-31 (10-26-11).txt

Scan type: Quick Scan
Objects scanned: 56072
Time elapsed: 4 minute(s), 54 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)



Here is the combofix log as well as a HijackThis log from yesterday after I initially tried to clean this up myself... I forgot to mention that this log showed that a whole bunch of strange scheduled jobs were setup on the infected notebook. I ran at /delete at a command prompt and deleted them all. I tried to find the files that were called to run but I couldn't locate them.

Edited by rigel, 31 October 2008 - 11:30 AM.


#5 rigel

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Posted 31 October 2008 - 11:38 AM

I edited out your ComboFix and HJT logs because they can't be evaluated in this section of BC.
I need to give you a warning about the TDSS infection you have:

IMPORTANT NOTE: One or more of the identified infections was related to a rootkit component. Rootkits and backdoor Trojan are very dangerous because they use advanced techniques (backdoors) as a means of accessing a computer system that bypasses security mechanisms and steal sensitive information which they send back to the hacker. Many rootkits can hook into the Windows 32-bit kernel, and patch several APIs to hide new registry keys and files they install. Remote attackers use backdoor Trojans and rootkits as part of an exploit to gain unauthorized access to a computer and take control of it without your knowledge.

If your computer was used for online banking, has credit card information or other sensitive data on it, all passwords should be changed immediately to include those used for banking, email, eBay, paypal and online forums. You should consider them to be compromised. They should be changed by using a different computer and not the infected one. If not, an attacker may get the new passwords and transaction information. Banking and credit card institutions should be notified of the possible security breach. Because your computer was compromised please read How Do I Handle Possible Identify Theft, Internet Fraud and CC Fraud?

Although the rootkit was identified and removed, your PC has likely been compromised and there is no way to be sure the computer can ever be trusted again. It is dangerous and incorrect to assume that because the rootkit has been removed the computer is now secure. In some instances an infection may have caused so much damage to your system that it cannot be completely cleaned or repaired. The malware may leave so many remnants behind that security tools cannot find them. Many experts in the security community believe that once infected with this type of malware, the best course of action is to wipe the drive clean, reformat and reinstall the OS. Please read:

? "When should I re-format? How should I reinstall?"
? "Help: I Got Hacked. Now What Do I Do?"
? "Where to draw the line? When to recommend a format and reinstall?"

Should you decide not to follow that advice, we will do our best to help clean the computer of any infections but we cannot guarantee it to be trustworthy or that the removal will be successful.

If you wish to try and clean your computer, we need to move you over to the HJT team. Let me know how you wish to proceed.

"In a world where you can be anything, be yourself." ~ unknown

"Fall in love with someone who deserves your heart. Not someone who plays with it. Will Smith


#6 agilulf

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Posted 31 October 2008 - 12:58 PM

I would like to attempt to clean it, I realize the severity of the infection which is why I came here for help.

If there are any signs of problems after we clean it as thoroughly as possible, I will then backup the users data and format his drive and re-install but the user is in a remote location today and I have been using remote desktop to work on it this week.

Let me know what I need to do and let's proceed for now.

#7 agilulf

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Posted 31 October 2008 - 01:12 PM

I spoke with the user and he will be in my location on Monday, so I am planning to backup his personal data and format his hard drive, and then re-install the OS and his applications.

Luckily, this person, doesn't really do any online banking, bill paying or shopping, other than iTunes.

#8 rigel

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Posted 31 October 2008 - 01:14 PM

Ok, that works :thumbsup:

Please follow this guide starting at step (9). Post a log to the HJT forum and include a link back to this topic. If you need any help with posting your HJT log, please let me know. Good luck - our HJT team is one of the best on the web!



rigel

"In a world where you can be anything, be yourself." ~ unknown

"Fall in love with someone who deserves your heart. Not someone who plays with it. Will Smith





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