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rundll93.exe error, can't download/install anti-*.* progs, redirects..etc


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#1 MrAntiSpyware

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Posted 20 May 2009 - 09:42 AM

Hey, about 3 weeks ago I was getting a constant rundll93.exe error. I ran several anti-spyware and bitdeffender and none still detected it. So I had lost internet connection and soon enough the PC would freeze upon boot. So, I repaired my XP with the installation disc. Everything has been fine except I can't delete one folder in my "mybackup" folder and have started getting redirects while browsing, I can't install any antispyware/ antivirus software. I get page not displayed or he likes. Rundll93 has started showing up again and several sites have been getting blocked. I have only been able to download malwarebytes antispyware, but it won't allow me to run it. The free online Panda scan detected W32/P2PShared.AN.worm and BCK/TDSS.AU but can't disinfect it. I only get one result when googling rundll93. Please help, I'm at the ends...

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#2 quietman7

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Posted 20 May 2009 - 09:55 AM

Some types of malware will disable Malwarebytes Anti-Malware and other security tools. If MBAM will not install, try renaming it and changing the file extension. <- click this link if you do not see the file extension
  • Right-click on the mbam-setup.exe file, rename it to mysetup and change the .exe extension to .scr, .com, .pif, or .bat.
  • Then double-click on mysetup.scr (or whatever extension you renamed it) to begin installation.
  • If after installation, MBAM will not run, open the Malwarebytes' Anti-Malware folder in Program Files.
  • Right-click on mbam.exe, rename it to myscan and change the .exe extension in the same way as noted above.
  • Double-click on myscan.scr (or whatever extension you renamed it) to launch the program.
If using Windows Vista, refer to How to Change a File Extension in Windows Vista.

Be sure to update MBAM through the program's interface (preferable method) or manually download the definition updates and just double-click on mbam-rules.exe to install. Then perform a Quick Scan in normal mode and check all items found for removal. Don't forgot to reboot afterwards. Failure to reboot normally (not into safe mode) will prevent MBAM from removing all the malware. When done, click the Logs tab and copy/paste the contents of the report in your next reply.

Mbam-rules.exe is not updated daily. Another way to get the most current database definitions if you're having problems updating through the program's interface or have already manually downloaded the latest definitions (mbam-rules.exe) shown on this page, is to do the following: Install MBAM on a clean computer, launch the program and update through MBAM's interface. Copy the definitions (rules.ref) to a USB stick or CD and transfer that file to the infected machine. Copy rules.ref to the location indicated for your operating system. If you cannot see the folder, then you may have to Reconfigure Windows to show it.
  • XP: C:\Documents and Settings\All Users\Application Data\Malwarebytes\Malwarebytes' Anti-Malware
  • Vista: C:\Documents and Settings\Users\All Users\Malwarebytes\Malwarebytes' Anti-Malware
Then perform a new Quick Scan in normal mode and check all items found for removal. Don't forgot to reboot afterwards. Failure to reboot normally (not into safe mode) will prevent MBAM from removing all the malware. When done, click the Logs tab and copy/paste the contents of the new report in your next reply.

It appears you have a nasty variant of the TDSSSERV rootkit. Rootkits, backdoor Trojans, Botnets, and IRCBots are very dangerous because they compromise system integrity by making changes that allow it to by used by the attacker for malicious purposes. Many rootkits can hook into the Windows 32-bit kernel, and patch several APIs to hide new registry keys and files they install. They can disable your anti-virus and security tools to prevent detection and removal. Remote attackers use backdoors as a means of accessing and taking control of a computer that bypasses security mechanisms. This type of exploit allows them to steal sensitive information like passwords, personal and financial data which is send back to the hacker. To learn more about these types of infections, you can refer to:If your computer was used for online banking, has credit card information or other sensitive data on it, all passwords should be changed immediately to include those used for banking, email, eBay, paypal and online forums. You should consider them to be compromised and change each password using a clean computer, not the infected one. If not, an attacker may get the new passwords and transaction information. If using a router, you need to reset it with a strong logon/password so the malware cannot gain control again. Banking and credit card institutions should be notified of the possible security breach. Because your computer was compromised please read:Although the rootkit was identified and may be removed, your PC has likely been compromised and there is no way to be sure the computer can ever be trusted again. It is dangerous and incorrect to assume the computer is secure even if the malware appears to have been removed. In some instances an infection may have caused so much damage to your system that it cannot be completely cleaned or repaired so you can never be sure that you have completely removed a rootkit. The malware may leave so many remnants behind that security tools cannot find them. Tools that claim to be able to remove rootkits cannot guarantee that all traces of it will be removed. Many experts in the security community believe that once infected with this type of malware, the best course of action is to wipe the drive clean, reformat and reinstall the OS. Please read:
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#3 MrAntiSpyware

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Posted 20 May 2009 - 10:01 AM

Thanks for the response. I don't use this PC for any personal things such as banking. Malwarebytes Anti-Malware is the only site I could download the software, but I am unable to run it. Any suggestions on that?

#4 quietman7

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Posted 20 May 2009 - 10:03 AM

Did you rename it as I previously instructed.
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#5 MrAntiSpyware

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Posted 20 May 2009 - 10:06 AM

oops.. sorry. Was busy with all the info on the page, I forgot. I just did and the program loads, should I proceed with updating and a scan? ---it won't let me update Malwarebyte

Edited by MrAntiSpyware, 20 May 2009 - 10:06 AM.


#6 MrAntiSpyware

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Posted 20 May 2009 - 10:33 AM

I was able to run a scan (without updates). But now I have absolutely no access to the internet even though my computer says I am connected. This is basically how it started before I did an XP repair. I still can't delete the hidden file in my mybackup folder. I have ran both malwarebyte and superantispyware. Am I still infected?

#7 quietman7

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Posted 20 May 2009 - 10:39 AM

Yes, you are still infected.

If you cannot use the Internet or download any programs, you are going to need access to another computer (family member, friend, etc) with an Internet connection. Please download Dr.Web CureIt, save it to a flash (usb, pen, thumb, jump) drive or CD, transfer it to the infected machine, then run the program. If you cannot transfer to the infected machine, try running directly from the flash drive or CD.

Be sure to print out and follow these instructions for performing a scan in "safe mode" after running ATF-Cleaner.
If you cannot boot into safe mode, then perform your scan in normal mode. Please be patient as this scan could take a long time to complete.
-- Post the log in your next reply.

While you are at it, follow my instructions in Post #2 for downloading the most current version of MBAM's database, then transfer to the infected computer so you can do another scan.
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#8 MrAntiSpyware

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Posted 20 May 2009 - 05:49 PM

Hey, thanks for all the patience.
Ok, it removed a bunch of things. And finally able to get back online. I notice have a folder in my C:\ folder named 4. I can't seem to delete it or uncheck read only attributes. I'm not sure where any log is to post up. There are still many sites that seem to be blocked for no reason... i.e. anti-spyware sites. Spybot, Superantispyware...etc.

#9 quietman7

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Posted 20 May 2009 - 06:37 PM

Can you update and scan with MBAM now? Last I checked it was 2158.

If not, follow the instructions I provided in Post #2 for updating from a clean computer and transferring rules.ref to the infected one.
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#10 MrAntiSpyware

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Posted 20 May 2009 - 06:49 PM

I keep getting page not found from all computers connected to this internet connection (2 wired and one wireless.) So I have been able to run the scan, but with no updates.

#11 quietman7

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Posted 21 May 2009 - 06:38 AM

I keep getting page not found from all computers connected to this internet connection

Please follow the instructions I provided in Post #2 for updating from a clean computer outside your home and transferring rules.ref to the infected one. Do not use any networked computers.
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