BleepingComputer.com: Peculiar .dll Item in Startup that starts up again if disabled

Hi,

I have a strange item in my Startup tab of msconfig.
It's called ejeguhimuhabuc and has the command

rundll32.exe "C:WINDOWS\ejeguhimuhabuc.dll", Startup

There's a version that I must have previously disabled in:
SOFTWARE\Microsoft\Windows\CurrentVersion\Run

And there's a version that keeps going in:
HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run


If I go into regedit, it has:
Name - Rritucuraqil
Type - Reg_SZ
Data - rundll32.exe "C:\WINDOWS\ejeguhimuhabuc.dll",Startup


I can't find it via google.


Does anyone have any ideas what it is, what it's doing, or what I should be doing - if anything - about it?

Thanks a lot.


W.

This post has been edited by hamluis: 25 November 2010 - 12:26 PM
Reason for edit: Moved from XP forum to Am I infected ~ Hamluis.

RunDLL32.exe is a legitimate Windows file that executes/loads .dll (Dynamic Link Library) modules which too can be legitimate or sometimes malware related.

Anytime you come across a suspicious file or you want a second opinion, submit it to one of the following online services that analyzes suspicious files:

• Jotti's virusscan
  
• VirusTotal
  
• VirSCAN

In the "File to upload & scan" box, browse to the location of the suspicious file and submit (upload) it for scanning/analysis.

Please download Malwarebytes Anti-Malware and follow these instructions for doing a Quick Scan in normal mode.

• 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 and exit MBAM.

-- If MBAM encounters a file that is difficult to remove, you will be asked to reboot your computer so it 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. 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.

-- Some types of malware will target Malwarebytes Anti-Malware and other security tools to keep them from running properly. If that's the case, please refer to the suggestions provided in For those having trouble running Malwarebytes Anti-Malware as you may need to rename it or use RKill by Grinler.

So it turns out that the startup file

rundll32.exe "C:WINDOWS\ejeguhimuhabuc.dll", Startup

is from the Trojan Hiloti. Somehow Malwarebytes Anti-Malware missed it.

It's got it now, though. Maybe I was just first to get it or something..!

It's not unusual to see new malware variants and related files appear almost on a daily basis. Sometimes it takes a while for these files to be reported and included in the definition database as targeted for removal.

How is your computer running now?

It's going a lot better. It was just my internet connection that slowed substantially, but now it's back up to speed. Yay.

Thanks.

You're welcome.

If there are no more problems or signs of infection, you should Create a New Restore Point to prevent possible reinfection from an old one. Some of the malware you picked up could have been backed up, renamed and saved in System Restore. Since this is a protected directory your tools cannot access to delete these files, they sometimes can reinfect your system if you accidentally use an old restore point. 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 > 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.
  
• Go to > Run... and type: Cleanmgr
  
• Click "Ok". Disk Cleanup will scan your files for several minutes, then open.
  
• Click the "More Options" tab, then click the "Clean up" button under System Restore.
  
• Click Ok. You will be prompted with "Are you sure you want to delete all but the most recent restore point?"
  
• Click Yes, then click Ok.
  
• Click Yes again when prompted with "Are you sure you want to perform these actions?"
  
• Disk Cleanup will remove the files and close automatically.

Vista and Windows 7 users can refer to these links:

• Create a New Restore Point in Vista or Windows 7
  
• Disk Cleanup in Vista
  
• Disk Cleanup in Windows 7