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Win32/trojandownloader.murlo.nn Trojan


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11 replies to this topic

#1 gggg_hhhh

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Posted 16 July 2008 - 12:50 PM

hello,
i've been receiving repetitive threat detections and warnings for the last week or so. at first i tried to ignore it thinking it might be something regular but of late its been really irritating that every time i log on to the internet i start receiving threat detections and even when i close 1, i receive another and this continues for a while. i am using NOD 32 anti virus and have unfortunately deleted the exact warning and can't replicate it . plz try helping me coz i'm really irritated by it.

7/16/2008 10:02:52 PM HTTP filter file http://root.51113.com/root.gif Win32/TrojanDownloader.Murlo.NN trojan connection terminated - quarantined NT AUTHORITY\SYSTEM Threat was detected upon access to web by the application: C:\WINDOWS\system32\svchost.exe.


im in need of urgent help as my anti virus is gonna expire

i have already formatted my system several times and cant risk doing it once again as it has vital information.

hope you guys look into this matter at the earliest.

THANK YOU

Edited by gggg_hhhh, 16 July 2008 - 12:52 PM.


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#2 boopme

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Posted 16 July 2008 - 07:52 PM

Hello and welcome,are you running XP?

Please download Malwarebytes Anti-Malware and save it to your desktop.
alternate download link 1
alternate download link 2
  • Make sure you are connected to the Internet.
  • Double-click on Download_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 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 and you may be prompted to restart your computer. (see Note below)
  • 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 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 immediately. Failure to reboot 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 gggg_hhhh

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Posted 17 July 2008 - 11:01 AM

hi boopme
thanks for replying
here is the log that u asked for
i suppose that is the end of it but i am not sure




Malwarebytes' Anti-Malware 1.20
Database version: 961
Windows 5.1.2600 Service Pack 2

9:24:01 PM 7/17/2008
mbam-log-7-17-2008 (21-24-01).txt

Scan type: Quick Scan
Objects scanned: 43503
Time elapsed: 4 minute(s), 2 second(s)

Memory Processes Infected: 0
Memory Modules Infected: 0
Registry Keys Infected: 2
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\{45aadfaa-dd36-42ab-83ad-0521bbf58c24} (Spyware.OnlineGames) -> Quarantined and deleted successfully.
HKEY_CLASSES_ROOT\CLSID\{84143967-b645-4bff-b873-da1dc886e9a7} (Spyware.OnlineGames) -> 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)

.............once again thanks a lot BOOPME......

Edited by gggg_hhhh, 17 July 2008 - 11:02 AM.


#4 boopme

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Posted 17 July 2008 - 11:18 AM

The problem is cleared??
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

#5 gggg_hhhh

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Posted 17 July 2008 - 11:52 AM

just after the quick scan i performed a full scan and found 7 more infections
in the system volume information folder of the C drive

i performed this while nod32 anti virus was still running.
when the scan completed and cleaning process had started i got several warnings from nod32 as i have mentioned in the beginning .all of the seem to have their root in the C:system volume information

MBAM was successful in cleaning all 7 infections

here is the log file

Malwarebytes' Anti-Malware 1.20
Database version: 961
Windows 5.1.2600 Service Pack 2

9:54:06 PM 7/17/2008
mbam-log-7-17-2008 (21-54-06).txt

Scan type: Full Scan (C:\|D:\|E:\|F:\|G:\|)
Objects scanned: 106095
Time elapsed: 17 minute(s), 30 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: 7

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:
C:\System Volume Information\_restore{F631DB4D-BA62-4F97-8E05-A6A5102C10B5}\RP12\A0001507.dll (Spyware.OnlineGames) -> Quarantined and deleted successfully.
C:\System Volume Information\_restore{F631DB4D-BA62-4F97-8E05-A6A5102C10B5}\RP19\A0013153.dll (Spyware.OnlineGames) -> Quarantined and deleted successfully.
C:\System Volume Information\_restore{F631DB4D-BA62-4F97-8E05-A6A5102C10B5}\RP19\A0013154.dll (Spyware.OnlineGames) -> Quarantined and deleted successfully.
C:\System Volume Information\_restore{F631DB4D-BA62-4F97-8E05-A6A5102C10B5}\RP19\A0013155.dll (Spyware.OnlineGames) -> Quarantined and deleted successfully.
C:\System Volume Information\_restore{F631DB4D-BA62-4F97-8E05-A6A5102C10B5}\RP19\A0013156.dll (Spyware.OnlineGames) -> Quarantined and deleted successfully.
C:\System Volume Information\_restore{F631DB4D-BA62-4F97-8E05-A6A5102C10B5}\RP19\A0013159.dll (Spyware.OnlineGames) -> Quarantined and deleted successfully.
C:\System Volume Information\_restore{F631DB4D-BA62-4F97-8E05-A6A5102C10B5}\RP19\A0013160.dll (Spyware.OnlineGames) -> Quarantined and deleted successfully.

still not sure if its completely removed
dont know how many are still hiding in those least accessed folders


THAT WAS A VERY QUICK REPLY
THANK YOU VERY MUCH

Edited by gggg_hhhh, 17 July 2008 - 12:00 PM.


#6 boopme

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Posted 17 July 2008 - 11:59 AM

It appears these are left in Sysytem restore. Scans cannot access these files. So let's clear them and scan again.

Now you should Set 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 System Restore is a protected directory, your tools can not access it to delete these bad files which sometimes can reinfect your system. 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.
  • Then go to Start > Run and type: Cleanmgr
  • Click "OK".
  • Click the "More Options" Tab.
  • Click "Clean Up" in the System Restore section to remove all previous restore points except the newly created one.

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

#7 gggg_hhhh

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Posted 17 July 2008 - 12:20 PM

performed accordingly
need to wait for another day to
if its going to surface again or not




THANK YOU

#8 boopme

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Posted 17 July 2008 - 12:51 PM

You're Welcome!!
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 gggg_hhhh

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Posted 18 July 2008 - 09:34 AM

hi boopme
seems like the problem has not been solved completely.The malware seems to be entering my computer via LAN
i have internet access through a LAN cable .just after posting the last reply i got another alert from nod32 av.

it reported the following problems,im providing u with log log files of the most recent alerts from nod32

7/18/2008 7:15:27 PM Real-time file system protection file C:\Documents and Settings\NetworkService\Local Settings\Temporary Internet Files\Content.IE5\S3PTBWKP\root[14].gif Win32/TrojanDownloader.Murlo.NN trojan cleaned by deleting - quarantined NT AUTHORITY\SYSTEM Event occurred during an attempt to access the file by the application: C:\WINDOWS\System32\svchost.exe.

7/18/2008 7:15:23 PM HTTP filter file http://root.51113.com/root.gif Win32/TrojanDownloader.Murlo.NN trojan connection terminated - quarantined USER-A878673C18\RITU Threat was detected upon access to web by the application: C:\WINDOWS\explorer.exe.

7/18/2008 7:15:20 PM HTTP filter file http://root.51113.com/root.gif Win32/TrojanDownloader.Murlo.NN trojan connection terminated - quarantined NT AUTHORITY\SYSTEM Threat was detected upon access to web by the application: C:\WINDOWS\system32\svchost.exe.

suspecting any infection in my pc , i even ran a full scan with malware bytes only to find the system completely free from any malware

i suppose all the systems in the lan have been infected as my internet login page behaves erratically sometimes

if that is true plz suggest a solution
sorry for prolonging this discussion

THANK YOU

#10 boopme

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Posted 18 July 2008 - 01:29 PM

can you scan all the machines with Mbam??
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 gggg_hhhh

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Posted 19 July 2008 - 01:49 AM

yes i can scan

#12 boopme

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Posted 19 July 2008 - 09:21 AM

I would do that then..
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




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