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Infected with malware, not sure what flavor

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8 replies to this topic

#1 Prettyfish


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Posted 23 October 2009 - 03:57 PM

Hello, and thanks so much in advance for the assistance!

I landed on the wrong part of web-town yesterday and got infected. Various disinfecting programs identified and fixed problems, and though they all claim my machine is repaired, there is something still lurking here that I cannot pinpoint. Details:

Scanners run: mbam, SuperAntiSpyware, Spybot S&D, and ComboFix, with updates installed as of yesterday afternoon as needed.

A-V software: Avast, current and updated.

Symptoms: There are two:

1. Periodically (every 5-15 minutes), a file is created in C:\Windows\Temp. The file is named four random characters .tmp, and Avast identifies it as infected. At the moment, I've got that folder write-protected so it can't be created in there, but that's just to keep Avast from freaking out all the time. Example of Avast's output for these files:

Win32:MalOb-Z [Cryp]
091022-0, 10/22/2009

Yesterday, I uploaded one of the files to virustotal.com out of curiosity, and several other A-V programs flagged it as infected, all with some kind of trojan identifier.

2. When clicking on links from Yahoo News searches, my destination url was hijacked and replaced with various search sites. Repeated back-and-reclick efforts identified a pattern of two hijacks followed by allowing me on the third attempt to reach my destination. I'm seeing this in Firefox, though the infection came via IE, which I use once in a while.

Per forum instructions, I'm attaching the DDS and Attach logs.

I attempted to run RootRepeal three times and got two blue screens and a computer freeze; I'm thinking there may be more than just a virus going wrong, here. I find that I'm also unable to boot to safe mode (blue screen there as well, after it loads the first set of files after safe mode is selected).

Anyway, if there's more info I can provide, just let me know. If you have any ideas to fix, I'd love to hear. Would hate to have to reinstall windows and thirty-leven programs, at least... not yet...

Attached Files

BC AdBot (Login to Remove)


#2 syler


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Posted 31 October 2009 - 09:14 PM


We apologize for the delay in responding to your request for help. Here at Bleeping Computer we get overwhelmed at times, and
we are trying our best to keep up.

My name is Syler and I will be helping you to solve your Malware issues. If you have since resolved your issues I would appreciate if you
would let me no so I can close this topic, if you still need help please let me no what issues you are still having, in your next reply.

ComboFix should not be run unless requested by a HJT Team member. It 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.

Post the contents of C:\ComboFix.txt in your next reply.

  • Download random's system information tool (RSIT) by random/random from here and save it to your desktop.
  • Double click on RSIT.exe to run RSIT.
  • Click Continue at the disclaimer screen.
  • Once it has finished, two logs will open. Please post the contents of both log.txt (<<will be maximized) and info.txt (<<will be minimized)
Then please post back here with the following:
  • Combofix.txt
  • log.txt
  • info.txt


#3 Prettyfish

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Posted 01 November 2009 - 01:07 PM

Hi Syler,

Thanks for the reply. Yes, system still infected, haven't found the problem OR my windows install cd.

Symptoms are exactly the same as described in the original post: randomly named xxxx.tmp file being frequently created in the windows\temp directory that contains a trojan payload; and search engine hijacks that send me to other search sites instead of my requested destination, in both Firefox and IE.

Per your request, I have attached ComboFix.txt, from Oct 22 when the infection first occurred, and the RSIT files that were generated a few minutes ago.

Thank you for the help! I look forward to your reply.

Attached Files

#4 syler


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Posted 01 November 2009 - 02:08 PM

Hello Prettyfish,

Peer-to-Peer Programs Warning
Your log shows that you are using so called peer-to-peer or file-sharing programs (in your case Limewire and Azureus Vuze). These programs allow to share files between users as the name(s) suggest. In today's world cyber crime has come to an enormous dimension and any means is used to infect personal computers to make use of their stored data or machine power for further propagation of the malware files. A popular means is the use of file-sharing tools as a tremendous amount of prospective victims can be reached through it.

It is therefore possible to be infected by downloading manipulated files via peer-to-peer tools and thus suggested to be used with intense care. Some further readings on this subject, along the included links, are as follows: File-Sharing, otherwise known as Peer To Peer and Risks of File-Sharing Technology.

It is also important to note that sharing entertainment files and proprietary software infringes the copyright laws in many countries over the world and you are putting yourself at risk of being indicted through organizations watching over the rights of the authors of such files (i.e. the RIAA for music files, or the MPAA for movie files in the USA) or the authors of the files themselves.

Naturally there are also legal ways to use these services, such as downloading Linux distributions or office suites such as "Open Office."

It is your decision whether or not you wish to keep your program(s). However, please refrain from using them until your computer has been declared clean.

Before you do any of the next step you need to temporarily disable the TeaTimer protection in spybot, as it may
stop the tools we use from doing their job. Please keep it disabled whilst I am helping you then you can enable it again
when your clean.

To disable Teatimer, open Spybot and click on the Mode tab and select Advanced mode.
It will ask you if your sure you want to go into advanced mode, select yes.
Now go to tools and click on the resident tab.
Uncheck the box that says "Resident "TeaTimer" (Protection of over-all system settings) active".
Then close Spybot and reboot your computer.

Before you run Combofix delete the copy you have and download a new copy.

1. Close any open browsers.

2. Close/disable all anti virus and anti malware programs so they do not interfere with the running of ComboFix.

3. Open notepad and copy/paste the text in the quotebox below into it:

[HKEY_LOCAL_MACHINE\software\microsoft\security center]

Save this as CFScript.txt, in the same location as ComboFix.exe

Posted Image

Refering to the picture above, drag CFScript into ComboFix.exe

When finished, it shall produce a log for you at C:\ComboFix.txt which I will require in your next reply.

  • Please download GMER from one of the following locations, and save it to your desktop:
    • Main Mirror
      This version will download a randomly named file (Recommended)
    • Zip Mirror
      This version will download a zip file you will need to extract first. If you use this mirror, please extract the zip file to your desktop.
  • Disconnect from the Internet and close all running programs, as this process may crash your computer.
  • Temporarily disable any real-time active protection so your security program drivers will not conflict with gmer's driver.
  • Double click on Gmer to run it.
  • Allow the gmer.sys driver to load if asked.
  • You may see a rootkit warning window, If you do, click No.
  • Click on Posted Image and wait for the scan to finish.
  • If you see a rootkit warning window, click OK.
  • Push Posted Image and save the logfile to your desktop.
  • Copy and Paste the contents of that file in your next post.

Please post back here with the following logs:
  • Combofix.txt
  • Gmer log


#5 Prettyfish

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Posted 01 November 2009 - 07:40 PM

Well, THAT took some hours... good news is that ComboFix found and shot a rootkit!

Attached, please find the ComboFix and GMER logs, as requested.

Attached Files

#6 syler


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Posted 01 November 2009 - 07:53 PM

That's looking better, please let me know in your next reply if you are still having any issues.

Your Java is out of date. Older versions have vulnerabilities that malicious sites can use to exploit and infect your system. Please follow these steps to remove older version Java components and update:
  • Download the latest version of Java Runtime Environment (JRE) Version 6 and save it to your desktop.
  • Look for "Java Runtime Environment (JRE)" JRE 6 Update 16.
  • Click the Download button to the right.
  • Select your Platform: "Windows".
  • Select your Language: "Multi-language".
  • Read the License Agreement, and then check the box that says: "Accept License Agreement".
  • Click Continue and the page will refresh.
  • Under Required Files, check the box for Windows Offline Installation, click the link below it and save the file to your desktop.
  • Close any programs you may have running - especially your web browser.
Go to Start > Control Panel, double-click on Add/Remove Programs and remove all older versions of Java.
  • Check (highlight) any item with Java Runtime Environment (JRE or J2SE) in the name.
  • Click the Reamove or Change/Remove button and follow the onscreen instructions for the Java uninstaller.
  • Repeat as many times as necessary to remove each Java versions.
  • Reboot your computer once all Java components are removed.
  • Then from your desktop double-click on jre-6u16-windows-i586-p.exe to install the newest version.
-- If using Windows Vista and the installer refuses to launch due to insufficient user permissions, then Run As Administrator.
-- If you choose to update via the Java applet in Control Panel, uncheck the option to install the Toolbar unless you want it.
-- The uninstaller incorporated in this release removes previous Updates 10 and above, but does not remove older versions, so they still need to be removed manually.

Note: The Java Quick Starter (JQS.exe) adds a service to improve the initial startup time of Java applets and applications. To disable the JQS service if you don't want to use it, go to Start > Control Panel > Java > Advanced > Miscellaneous and uncheck the box for Java Quick Starter. Click Ok and reboot your computer.

Please download Malwarebytes' Anti-Malware from Here

Note: If you already have Malwarebytes' Anti-Malware, just update then run it.
  • Double Click mbam-setup.exe to install the application.
  • Make sure a checkmark is placed next to Update Malwarebytes' Anti-Malware and Launch Malwarebytes' Anti-Malware, then click Finish.
  • If an update is found, it will download and install the latest version.
  • Once the program has loaded, select "Perform Full Scan", then click Scan (the scan may take some time to finish, so please be patient).
  • When the scan is complete, click OK, then Show Results to view the results.
  • Make sure that everything is checked, and click Remove Selected.
  • When disinfection is completed, a log will open in Notepad and you may be prompted to Restart.(See Extra Note)
  • The log is automatically saved by MBAM and can be viewed by clicking the Logs tab in MBAM.
  • Copy and Paste the entire report in your next reply .
Note: If MBAM encounters a file that is difficult to remove,you will be presented with 1 of 2 prompts, click OK to either and let MBAM proceed with the disinfection process,if asked to restart the computer,please do so immediatly.

Please do a scan with Kaspersky Online Scanner

Note: If you are using Windows Vista, open your browser by right-clicking on its icon and select 'Run as administrator' to perform this scan.

Click on the Accept button and install any components it needs.
  • The program will install and then begin downloading the latest definition files.
  • After the files have been downloaded on the left side of the page in the Scan section select My Computer
  • This will start the program and scan your system.
  • The scan will take a while, so be patient and let it run.
  • Once the scan is complete, click on View scan report
  • Now, click on the Save Report as button.
  • Save the file to your desktop.
  • Copy and paste that information in your next post.

Please post back here with the following logs:
  • MBAM log
  • Kaspersky report
  • New Rsit log


#7 Prettyfish

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Posted 03 November 2009 - 02:41 PM

Looks like things are good, minus a little cleanup. No symptoms of infection are occurring at this point.

Java updated as suggested.

Kaspersky found some dirt in a couple of Outlook files (one of which is several years old and I don't even know why I bother to keep it), but that's most likely old email attachments (which I never open anyway, so no risk there).

MBAM found nothing, but while it was searching system restore points, Avast (curiously) triggered several times with suddenly infected files in the exact same place, which I deleted.

RSIT, Kaspersky, MBAM and Avast logs attached for review.

Thank you SO MUCH for your help, I really appreciate it. Now I can wait on buying System 7 for a while longer...

Attached Files

#8 syler


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Posted 03 November 2009 - 07:07 PM

Thank you SO MUCH for your help, I really appreciate it.

You're very welcome :(

Uninstall ComboFix
  • Click START then RUN
  • Now type Combofix /uninstall in the runbox and click OK. Note the space between the X and the /, it needs to be there.
Posted Image

Download and Run OTC

We will now remove the tools we used during this fix using OTC.
  • Download OTC by OldTimer and save it to your desktop.
  • Double click Posted Image icon to start the program. If you are using Vista, please right-click and choose run as administrator
  • Then Click the big Posted Image button.
  • You will get a prompt saying "Being Cleanup Process". Please select Yes.
  • Restart your computer when prompted.
Congratulations! You now appear clean! :(

Now that you are clean, please follow these simple steps in order to keep your computer clean and secure:

Cleaning and creating restore points
  • Click Start, right click My Computer and select properties.
  • Select the System Restore tab then check the box "Turn off System Restore".
  • Click Apply then Ok, then restart your computer
  • Now follow these steps again, but instead of checking "Turn off System Restore" Uncheck it.
Now that you have cleaned out you restore points you need to set a new restore point
  • Go to Start > Programs > Accessories > System Tools and click "System Restore".
  • Select "Create a restore point" then click Next.
  • Type a name under Restore point description then click Create.
Additional instructions can be found here if needed.

Note: This does not need to be done on a regular basis.

Keeping Windows updated
It is extremley important to keep windows upto date with the latest service pack and patches. This will prevent you
from getting the malware which uses vulnerabilities found in windows to exploit your computer. The easiest way to
do this this is by making sure that Automatic Updates are always enabled.

To do this Click on Start >> Control Panel >> Automatic updates and click Automatic (recommended) then Apply and Ok

Update your AntiVirus Software
It is imperative that you update your Antivirus software at least once a week (Even more if you wish). If you do not
update your antivirus software then it will not be able to catch any of the new variants that may come out. If you
use a commercial antivirus program you must make sure you keep renewing your subscription. Otherwise, once your
subscription runs out, you may not be able to update the programs virus definitions.

Make sure your applications have all of their updates
It is also possible for other programs on your computer to have security vulnerability that can allow malware to infect you.
Therefore, it is also a good idea to check for the latest versions of commonly installed applications that are regularly
patched to fix vulnerabilities. You can check these by visiting Secunia Software Inspector and Calendar of Updates.

Install a Firewall
I can not stress how important it is that you use a third party Firewall on your computer. Without a firewall your computer is
succeptible to being hacked and taken over. Windows firewall is good for blocking inbound connections but it does not block
outbound connections. So if Malware manages to get onto your computer it will be able to send data out when it wants.
Here are some free firewalls I would recomend, only install one of these.

Zone Alarm
comodo..........Note: Only Install the Firewall as a standalone if you already have an AntiVirus installed on your computer.

After you install the third party firewall, please disable your Windows firewall. Please go to My Computer >> Control Panel >> Windows Firewall
and choose Off (not recommended) option. Then please click Apply and Ok.

Install SpywareBlaster
SpywareBlaster will added a large list of programs and sites into your Internet Explorer settings that will protect you
from running and downloading known malicious programs.

A tutorial on installing & using this product can be found here:
Using SpywareBlaster to protect your computer from Spyware and Malware

Use MVPS hosts file
Using a custom host file like the MVPS HOSTS file can help to block ads, banners, 3rd party Cookies,
3rd party page counters, web bugs, and even most hijackers. It doesn't use up any extra system resources
and may even speed up the loading of web pages. You can download and find instructions below.


Update all these programs regularly
Make sure you update all the programs I have listed regularly. Without regular updates you WILL NOT be protected when new malicious programs are released.

Follow this list and your potential for being infected again will reduce dramatically.

Happy surfing :)


#9 syler


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Posted 04 November 2009 - 11:12 PM

Since this issue appears resolved ... this Topic is closed. Glad we could help.

If you need this topic reopened, please request this by sending me a PM
with the address of the thread. This applies only to the original topic starter.

Everyone else please begin a New Topic.


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