Jump to content


 


Register a free account to unlock additional features at BleepingComputer.com
Welcome to BleepingComputer, a free community where people like yourself come together to discuss and learn how to use their computers. Using the site is easy and fun. As a guest, you can browse and view the various discussions in the forums, but can not create a new topic or reply to an existing one unless you are logged in. Other benefits of registering an account are subscribing to topics and forums, creating a blog, and having no ads shown anywhere on the site.


Click here to Register a free account now! or read our Welcome Guide to learn how to use this site.

Photo

Avast (aswMBR) picked up something. Am I infected?


  • Please log in to reply
4 replies to this topic

#1 christopherw

christopherw

  • Members
  • 39 posts
  • OFFLINE
  •  
  • Local time:05:51 PM

Posted 22 May 2012 - 10:34 AM

we just got rid a serious rootkit on a different workstation and now Avast is picking something up on this workstation. Running on Windows Vista 32bit, Service Pack 2.

I ran a check on the file aswMBR picked up as being questionable and there was nothing online. Here's the log from Avast:

aswMBR version 0.9.9.1665 Copyright© 2011 AVAST Software
Run date: 2012-05-22 10:58:33
-----------------------------
10:58:33.479 OS Version: Windows 6.0.6002 Service Pack 2
10:58:33.479 Number of processors: 1 586 0xF0D
10:58:33.494 ComputerName: VERONICA-PC UserName: Veronica
10:58:57.612 Initialize success
10:59:08.532 AVAST engine defs: 12052101
10:59:14.507 Disk 0 (boot) \Device\Harddisk0\DR0 -> \Device\Ide\IdeDeviceP0T0L0-0
10:59:14.522 Disk 0 Vendor: ST9160310AS HP07 Size: 152627MB BusType: 3
10:59:14.569 Disk 0 MBR read successfully
10:59:14.569 Disk 0 MBR scan
10:59:14.585 Disk 0 unknown MBR code
10:59:14.585 Disk 0 Partition 1 80 (A) 07 HPFS/NTFS NTFS 142032 MB offset 63
10:59:14.709 Disk 0 Partition 2 00 07 HPFS/NTFS NTFS 10591 MB offset 290883584
10:59:14.803 Disk 0 scanning sectors +312573952
10:59:15.131 Disk 0 scanning C:\Windows\system32\drivers
10:59:41.448 Service scanning
11:00:01.135 Service MpKsl57ace321 c:\ProgramData\Microsoft\Microsoft Antimalware\Definition Updates\{64FE44A3-311F-42BF-B374-1D03D4F9090D}\MpKsl57ace321.sys **LOCKED** 32
11:00:25.003 Modules scanning
11:00:33.879 Disk 0 trace - called modules:
11:00:34.207 ntkrnlpa.exe CLASSPNP.SYS disk.sys ataport.SYS hal.dll PCIIDEX.SYS msahci.sys
11:00:34.223 1 nt!IofCallDriver -> \Device\Harddisk0\DR0[0x85755ac8]
11:00:34.223 3 CLASSPNP.SYS[8220e8b3] -> nt!IofCallDriver -> \Device\Ide\IdeDeviceP0T0L0-0[0x845f4340]
11:00:35.159 AVAST engine scan C:\Windows
11:00:38.357 AVAST engine scan C:\Windows\system32
11:06:55.939 AVAST engine scan C:\Windows\system32\drivers
11:07:24.830 AVAST engine scan C:\Users\Veronica
11:10:15.588 AVAST engine scan C:\ProgramData
11:14:03.878 Scan finished successfully
11:16:00.535 Disk 0 MBR has been saved successfully to "C:\Users\Veronica\Documents\MBR.dat"
11:16:00.660 The log file has been saved successfully to "C:\Users\Veronica\Documents\aswMBR.txt"

Can someone tell us if were infected and what we need to do now?

Thanks in advance

BC AdBot (Login to Remove)

 


#2 Broni

Broni

    The Coolest BC Computer


  • BC Advisor
  • 42,696 posts
  • ONLINE
  •  
  • Gender:Male
  • Location:Daly City, CA
  • Local time:03:51 PM

Posted 22 May 2012 - 10:51 AM

There is nothing suspicious in aswMBR log.

Same computer as here: http://www.bleepingcomputer.com/forums/topic453976.html/page__p__2702436__fromsearch__1#entry2702436 ?

My Website

p4433470.gif

My help doesn't cost a penny, but if you'd like to consider a donation, click p22001735.gif


 


#3 cryptodan

cryptodan

    Bleepin Madman


  • Members
  • 21,868 posts
  • OFFLINE
  •  
  • Gender:Male
  • Location:Catonsville, Md
  • Local time:10:51 PM

Posted 22 May 2012 - 10:56 AM

Lets run TDSS Killer and see what it finds if anything along with the following: If TDSS Asks you to fix anything, please DO NOT FIX ANYTHING. Post the resulting log file located in C:\

Hello,

And welcome to BleepingComputer.com, before we can assist you with your question of: Am I infected? You will need to perform the following tasks and post the logs of each if you can. If you have performed any of the scans below post the logs for those scans, and then perform the ones you have not done.

Please download and run Security Check from HERE, and save it to your Desktop.

* Double-click SecurityCheck.exe
* Follow the onscreen instructions inside of the black box.
* A Notepad document should open automatically called checkup.txt; please post the contents of that document.

Malwarebytes Anti-Malware

NOTEMalwarebytes is now offering a free trial of their program, if you want to accept it you will need to enter some billing information, so that at the end of the trial you would be charged the cost of the product. Please decline this offer, if you are unable to provide billing information. If you want to try it out, then provide the billing information.

Please download Malwarebytes Anti-Malware and save it to your desktop.
Download Link 1
Download Link 2MBAM may "make changes to your registry" as part of its disinfection routine. If using other security programs that detect registry changes (ie Spybot's Teatimer), they may interfere or alert you. Temporarily disable such programs or permit them to allow the changes.

  • Make sure you are connected to the Internet.
  • Double-click on mbam-setup.exe to install the application.
    For instructions with screenshots, please refer to the How to use Malwarebytes' Anti-Malware Guide.
  • When the installation begins, follow the prompts and do not make any changes to default settings.
  • When installation has finished, make sure you leave both of these checked:
    • Update Malwarebytes' Anti-Malware
    • Launch Malwarebytes' Anti-Malware
  • Then click Finish.
MBAM will automatically start and you will be asked to update the program before performing a scan.
  • If an update is found, the program will automatically update itself. Press the OK button to close that box and continue.
  • If you encounter any problems while downloading the definition updates, manually download them from here and just double-click on mbam-rules.exe to install.
On the Scanner tab:
  • Make sure the "Perform Full 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. Be sure to post the complete log to include the top portion which shows MBAM's database version and your operating system.
  • Exit MBAM when done.
Note: If MBAM encounters a file that is difficult to remove, you will be asked to reboot your computer so MBAM can proceed with the disinfection process. If asked to restart the computer, please do so immediately. Failure to reboot normally (not into safe mode) will prevent MBAM from removing all the malware.


SUPERAntiSpyware:

Please download and scan with 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 it will not start, go to Start > All Prgrams > SUPERAntiSpyware and click on Alternate Start.
  • 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 unchecked (leave all others checked):
    • Ignore files larger then 4mb
    • Ignore non-executable files

    Now Perform the 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.[list]
    • 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.

SAS Portable
If you have a problem downloading, installing or getting SAS to run, try downloading and using the SUPERAntiSpyware Portable Scanner instead. Save the randomly named file (i.e. SAS_1710895.COM) to a usb drive or CD and transfer to the infected computer. Then double-click on it to launch and scan. The file is randomly named to help keep malware from blocking the scanner.


Now GMER

GMER does not work in 64bit Mode!!!!!!

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)
  • Zipped 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.
  • Temporarily disable any real-time active protection so your security programs will not conflict with gmer's driver.
  • Double-click on the randomly named GMER file (i.e. n7gmo46c.exe) and allow the gmer.sys driver to load if asked.
  • Note: If you downloaded the zipped version, extract the file to its own folder such as C:\gmer and then double-click on gmer.exe.

    Posted Image
  • GMER will open to the Rootkit/Malware tab and perform an automatic Full Scan when first run. (do not use the computer while the scan is in progress)
  • If you receive a WARNING!!! about rootkit activity and are asked to fully scan your system...click NO.
  • Now click the Scan button. If you see a rootkit warning window, click OK.
  • When the scan is finished, click the Save... button to save the scan results to your Desktop. Save the file as gmer.log.
  • Click the Copy button and paste the results into your next reply.
  • Exit GMER and be sure to re-enable your anti-virus, Firewall and any other security programs you had disabled.
-- If you encounter any problems, try running GMER in safe mode.
-- If GMER crashes or keeps resulting in a BSODs, uncheck Devices on the right side before scanning
.


All scans above should be performed in regular boot mode, and if that is not possible then I will post instructions in a follow up reply on how to get into Safe Mode to perform the scans. Also all scans should be COMPLETE and not quick unless specifically instructed to do so.

#4 christopherw

christopherw
  • Topic Starter

  • Members
  • 39 posts
  • OFFLINE
  •  
  • Local time:05:51 PM

Posted 22 May 2012 - 11:10 AM

ok I will give that a go.

Thanks

#5 boopme

boopme

    To Insanity and Beyond


  • Global Moderator
  • 73,176 posts
  • OFFLINE
  •  
  • Gender:Male
  • Location:NJ USA
  • Local time:06:51 PM

Posted 22 May 2012 - 09:46 PM

There is nothing suspicious in aswMBR log.

Same computer as here: http://www.bleepingcomputer.com/forums/topic453976.html/page__p__2702436__fromsearch__1#entry2702436 ?



Looks like the MRL is XP and this is Vista
How do I get help? Who is helping me?For the time will come when men will not put up with sound doctrine. Instead, to suit their own desires, they will gather around them a great number of teachers to say what their itching ears want to hear....Become a BleepingComputer fan: Facebook




0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users