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Backdoor.Ircbot.LWM


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5 replies to this topic

#1 jamsam93

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Posted 01 June 2010 - 05:45 PM

Hey Guys,


I got this really nasty trojan that, no matter how hard i try, will not go away. I scanned with AVG several times and cannot get rid of it because the "path is not accessible". THe exact path, according to AVG is as follows:

C:/WINDOWS/system32/svchost.exe (3576):/memory_00400000
<----- This one cannot be accessed
C:/WINDOWS/system32/svchost.exe (3576) <---- This one always gets deleted


Thanks in advance!

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#2 Blade

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Posted 01 June 2010 - 07:00 PM

Hello jamsam93 and :thumbsup: to BleepingComputer.

Please download Malwarebytes Anti-Malware and save it to your desktop.
alternate download link 1
alternate download link 2

IMPORTANT!!! - when you save the file, rename it to something random, such as bubbles.exe This must be done before beginning the download!

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.

~Blade

In your next reply, please include the following:
Malwarebytes Log

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#3 jamsam93

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Posted 01 June 2010 - 08:00 PM

Here you go:

Malwarebytes' Anti-Malware 1.46
www.malwarebytes.org

Database version: 4162

Windows 5.1.2600 Service Pack 2
Internet Explorer 7.0.5730.11

6/1/2010 5:54:03 PM
mbam-log-2010-06-01 (17-54-03).txt

Scan type: Quick scan
Objects scanned: 136581
Time elapsed: 10 minute(s), 43 second(s)

Memory Processes Infected: 0
Memory Modules Infected: 0
Registry Keys Infected: 16
Registry Values Infected: 1
Registry Data Items Infected: 3
Folders Infected: 1
Files Infected: 6

Memory Processes Infected:
(No malicious items detected)

Memory Modules Infected:
(No malicious items detected)

Registry Keys Infected:
HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\{19127ad2-394b-70f5-c650-b97867baa1f7} (Backdoor.Bot) -> Quarantined and deleted successfully.
HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\{3446af26-b8d7-199b-4cfc-6fd764ca5c9f} (Backdoor.Bot) -> Quarantined and deleted successfully.
HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\{43bf8cd1-c5d5-2230-7bb2-98f22c2b7dc6} (Backdoor.Bot) -> Quarantined and deleted successfully.
HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\{4776c4dc-e894-7c06-2148-5d73cef5f905} (Backdoor.Bot) -> Quarantined and deleted successfully.
HKEY_USERS\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\{19127ad2-394b-70f5-c650-b97867baa1f7} (Backdoor.Bot) -> Quarantined and deleted successfully.
HKEY_USERS\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\{3446af26-b8d7-199b-4cfc-6fd764ca5c9f} (Backdoor.Bot) -> Quarantined and deleted successfully.
HKEY_USERS\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\{43bf8cd1-c5d5-2230-7bb2-98f22c2b7dc6} (Backdoor.Bot) -> Quarantined and deleted successfully.
HKEY_USERS\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\{4776c4dc-e894-7c06-2148-5d73cef5f905} (Backdoor.Bot) -> Quarantined and deleted successfully.
HKEY_USERS\S-1-5-18\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\{19127ad2-394b-70f5-c650-b97867baa1f7} (Backdoor.Bot) -> Quarantined and deleted successfully.
HKEY_USERS\S-1-5-18\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\{3446af26-b8d7-199b-4cfc-6fd764ca5c9f} (Backdoor.Bot) -> Quarantined and deleted successfully.
HKEY_USERS\S-1-5-18\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\{43bf8cd1-c5d5-2230-7bb2-98f22c2b7dc6} (Backdoor.Bot) -> Quarantined and deleted successfully.
HKEY_USERS\S-1-5-18\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\{4776c4dc-e894-7c06-2148-5d73cef5f905} (Backdoor.Bot) -> Quarantined and deleted successfully.
HKEY_CURRENT_USER\Software\avsoft (Trojan.Fraudpack) -> Quarantined and deleted successfully.
HKEY_CURRENT_USER\Software\avsuite (Rogue.AntivirusSuite) -> Quarantined and deleted successfully.
HKEY_LOCAL_MACHINE\SOFTWARE\avsoft (Trojan.Fraudpack) -> Quarantined and deleted successfully.
HKEY_LOCAL_MACHINE\SOFTWARE\avsuite (Rogue.AntivirusSuite) -> Quarantined and deleted successfully.

Registry Values Infected:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Network\uid (Malware.Trace) -> Quarantined and deleted successfully.

Registry Data Items Infected:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Userinit (Spyware.Zbot) -> Data: c:\windows\system32\sdra64.exe -> Delete on reboot.
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Userinit (Spyware.Zbot) -> Data: system32\sdra64.exe -> Delete on reboot.
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Userinit (Hijack.UserInit) -> Bad: (C:\WINDOWS\system32\userinit.exe,C:\WINDOWS\system32\sdra64.exe,) Good: (userinit.exe) -> Quarantined and deleted successfully.

Folders Infected:
C:\WINDOWS\system32\lowsec (Stolen.data) -> Delete on reboot.

Files Infected:
C:\WINDOWS\system32\adptifz.exe (Trojan.Agent) -> Delete on reboot.
C:\WINDOWS\Temp\871954665.exe (Trojan.Agent) -> Quarantined and deleted successfully.
C:\WINDOWS\system32\lowsec\local.ds (Stolen.data) -> Delete on reboot.
C:\WINDOWS\system32\lowsec\user.ds (Stolen.data) -> Delete on reboot.
C:\Documents and Settings\Sam\Application Data\avdrn.dat (Malware.Trace) -> Quarantined and deleted successfully.
C:\WINDOWS\system32\sdra64.exe (Spyware.Zbot) -> Delete on reboot.

#4 Blade

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Posted 01 June 2010 - 09:48 PM

Hello.

Did you allow MBAM to reboot to complete removal? If not, please do so now.

After reboot, please run another MBAM scan just as you did before. If this second scan detects something, please post the log for my review. If it does not, please let me know how the computer is running.

~Blade

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#5 jamsam93

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Posted 02 June 2010 - 11:05 AM

Hello,

Yes i did and it still gives me Win32 crashes and that makes my windows go nuts. Also, when I search things on google, it will randomly redirect me to another website.

I scanned with MBAM again and it did NOT detect any threats. weird O_O

#6 Blade

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Posted 03 June 2010 - 03:08 AM

Hi

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 quick scan when first run. (do not use the computer while the scan is in progress)
  • If it gives you a warning about rootkit activity and asks if you want to run scan...click on NO, then use the following settings for a more complete scan.
  • In the right panel, you will see several boxes that have been checked. Uncheck the following ...
    • IAT/EAT
    • Drives/Partition other than Systemdrive (typically C:\)
    • Show All (don't miss this one)
  • Then click the Scan button & wait for it to finish.
  • Once done click on the [Save..] button, and in the File name area, type in "Gmer.log" or it will save as a .log file which cannot be uploaded to your post.
  • Save it where you can easily find it, such as your desktop, and copy/paste its contents in your next reply.
  • Exit GMER and re-enable all active protection when done.
-- If you encounter any problems, try running GMER in Safe Mode.
**Caution**
Rootkit scans often produce false positives. Do NOT take any action on any "<--- ROOKIT" entries


~Blade


In your next reply, please include the following:
GMER log

Edited by Blade Zephon, 03 June 2010 - 03:08 AM.

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