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Infected with Trojan - involving komunalac.exe


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#1 jjmakay

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Posted 02 August 2010 - 10:02 PM

Hi
thanks to all the people who make this help forum possible!!
here's my situation:
WHAT:
Recently AVG anti-virus free has been detecting a file named "Komunalac.exe" as a Trojan horse Generic 18.AQST. After coming back numerous times I recognise there is a probplem that AVG is not fixing.
I also remember strange folder names appearing for a while on my USB flash drive.
In addition: "Trojan horse Cryptic.AQZ" as ...\AppData\Roaming\dgixy.exe was detected today but was quarantined. may or maynot be related
WHEN:
I think AVG only detects this on inserting USB media or copying files from one external media to another external media, and not ever during a scan of the whole computer.
WHERE:
It has been found on the external drives and also in C:\Program Files\pera (from recollection)
AVG doesn't seem to have kept a record of these resident shield alerts, so I have no other info except I think it was always within a folder called "pera" ??

MY SYSTEM: Vista Home Premium SP2 32bit
I have made DDS reports and Hijack this reports if needed

Thanks
JJ

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#2 boopme

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Posted 02 August 2010 - 10:10 PM

Before we moved to the HJT forum.

Clean the flash drive.
Please download Flash_Disinfector.exe by sUBs and save it to your desktop.
  • Double-click Flash_Disinfector.exe to run it and follow any prompts that may appear.
  • The utility may ask you to insert your flash drive and/or other removable drives. Please do so and allow the utility to clean up those drives as well.
  • Hold down the Shift key when inserting the drive until Windows detects it to keep autorun.inf from executing if it is present.
  • Wait until it has finished scanning and then exit the program.
  • Reboot your computer when done.
Note: As part of its routine, Flash_Disinfector will create a hidden folder named autorun.inf in each partition and every USB drive that was plugged in when you ran it. Do not delete this folder...it will help protect your drives from future infection by keeping the autorun file from being installed on the root drive and running other malicious files.


On the PC...Next run MBAM (MalwareBytes):

Please download Malwarebytes Anti-Malware (v1.46) and save it to your desktop.
Before you save it rename it to say zztoy.exe


alternate download link 1
alternate download link 2
MBAM 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.
  • 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 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. 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.
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

#3 jjmakay

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Posted 03 August 2010 - 12:14 AM

Hi,
Thanks for the prompt reply
I have downloaded both Flash_Disinfector.exe and Malwarebytes Anti-Malware.
Malwarebytes is running the quick scan now
Flash_Disinfector is not seeming to work though. I have tried to run normally, as administrator, in compatibility mode. nothing happens except for windows asking if the program installed correctly .. any advice here ?
JJ

#4 jjmakay

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Posted 03 August 2010 - 07:26 PM

Is there an alternative to Flash_Disinfector.exe that runs on Vista HP SP2 32bit?

Edited by jjmakay, 03 August 2010 - 07:27 PM.


#5 jjmakay

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Posted 03 August 2010 - 10:08 PM

I am disinfecting all external media on a winXP computer because Flash_disinfector did not work on Vista as described above. The external media I need to clean includes:
USB-flash drive
USB-HDD x4

some of these seem to have aquired a folder called 'pera' amongst other strange ones (DANJU, DRAGANA, JOVANA, mornar) that appear with the recycle bin icon.
Also some already have an autorun.inf that is not removed by flash_disinfector ... if i manually remove autorun.inf then flash_disinfector adds its own as described in your help

-----------------------------
Here is the Malwarebytes log:


Malwarebytes' Anti-Malware 1.46
www.malwarebytes.org

Database version: 4384

Windows 6.0.6002 Service Pack 2
Internet Explorer 8.0.6001.18928

3/08/2010 8:46:35 PM
mbam-log-2010-08-03 (20-46-35).txt

Scan type: Quick scan
Objects scanned: 142221
Time elapsed: 7 minute(s), 2 second(s)

Memory Processes Infected: 0
Memory Modules Infected: 0
Registry Keys Infected: 1
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:
HKEY_CLASSES_ROOT\CLSID\{147a976f-eee1-4377-8ea7-4716e4cdd239} (Adware.MyWebSearch) -> Quarantined and deleted successfully.

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)

#6 jjmakay

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Posted 04 August 2010 - 03:07 AM

Not too sure about this site ... I just ran Flash_Disinfector on an XP computer to disinfect those drives and now that computer wont recognise any usb drives (flash, hdd, card reader) !!
Prompt reply at first suggesting I use certain software and now no follow up ?
If this site is legit can someone post back
JJ

#7 boopme

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Posted 04 August 2010 - 03:50 PM

Personally I suspect the malware interference on the XP machine. We have never seen this before.
I am contacting the Tools creator to look at this.
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

#8 boopme

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Posted 05 August 2010 - 01:50 PM

Please clarify what you mean by the computer not recognizing those drives. Are they not observable in Windows Explorer (you do not see them), nothing happens when you click on them, something else, etc.
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

#9 jjmakay

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Posted 05 August 2010 - 10:16 PM

Nothing would happen when I plugged in any kind of USB data storage, and when I plugged the mouse in it said this device has malfunctioned. I did a system restore and now the xp computer is back to normal. No idea what caused this but I accept that Flash_Disinfector is held in high regard by the community and was unlikely to be the cause.

As for my computer and the exteral HDD, I have done the scan with Malwarebytes and posted it, and Flash_disinfector wont run on my computer. VistaHP SP2 32bit
some of the external drives still have icons that look like recycle bins but have weird names as posted above.

So any useful advice about this would be appreciated

#10 boopme

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Posted 06 August 2010 - 08:55 PM

You can download and use Autorun Eater or Autorun USB Virus Finder which will allow removal of any suspicious 'autorun.inf' files they find. Panda USB Vaccine. Computer Vaccination will prevent any AutoRun file from running, regardless of whether the removable device is infected or not. USB Vaccination disables the autorun file so it cannot be read, modified or replaced and creates an AUTORUN_.INF as protection against malicious code. The Panda Resarch Blog advises that once USB drives have been vaccinated, they cannot be reversed except with a format. If you do this, be sure to back up your data files first or they will be lost during the formatting process.

Another option for XP users is Flash_Disinfector by sUBs. Please read About Flash Disinfector by Papakid and USB/Flash Drive Safety by TheJoker.

Finally, always scan USB flash drives and any external storage media after they have been used in other computer systems, even your own. An easy way to do this is to download "ClamWin Portable Antivirus", put it on your USB Flash Drive, update its definition files and perform a scan.
{borrowed from our quietman7}
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

#11 jjmakay

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Posted 11 August 2010 - 12:42 AM

Ok,
thanks for your help. I've followed the advice, and now my fingers are crossed
Cheers
jj




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